2020-08-31 15:40:27,030 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure The last packet successfully received from the server was 11,949,901 milliseconds ago. The last packet sent successfully to the server was 11,949,902 milliseconds ago. at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174) at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64) at com.mysql.cj.jdbc.StatementImpl.executeInternal(StatementImpl.java:782) at com.mysql.cj.jdbc.StatementImpl.execute(StatementImpl.java:666) at com.zaxxer.hikari.pool.PoolBase.isConnectionAlive(PoolBase.java:165) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:185) ... 28 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet successfully received from the server was 11,949,901 milliseconds ago. The last packet sent successfully to the server was 11,949,902 milliseconds ago. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeProtocol.send(NativeProtocol.java:593) at com.mysql.cj.protocol.a.NativeProtocol.sendCommand(NativeProtocol.java:654) at com.mysql.cj.protocol.a.NativeProtocol.sendQueryPacket(NativeProtocol.java:986) at com.mysql.cj.protocol.a.NativeProtocol.sendQueryString(NativeProtocol.java:921) at com.mysql.cj.NativeSession.execSQL(NativeSession.java:1165) at com.mysql.cj.jdbc.StatementImpl.executeInternal(StatementImpl.java:742) ... 31 common frames omitted Caused by: java.net.SocketException: Connection reset by peer: socket write error at java.net.SocketOutputStream.socketWrite0(Native Method) at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:111) at java.net.SocketOutputStream.write(SocketOutputStream.java:155) at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82) at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140) at com.mysql.cj.protocol.a.SimplePacketSender.send(SimplePacketSender.java:55) at com.mysql.cj.protocol.a.TimeTrackingPacketSender.send(TimeTrackingPacketSender.java:50) at com.mysql.cj.protocol.a.NativeProtocol.send(NativeProtocol.java:584) ... 36 common frames omitted 2020-08-31 15:40:30,033 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.NoRouteToHostException: No route to host: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:40:45,031 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.NoRouteToHostException: No route to host: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:40:48,037 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.NoRouteToHostException: No route to host: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:41:03,035 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.NoRouteToHostException: No route to host: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:41:06,041 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.NoRouteToHostException: No route to host: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:41:21,038 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.NoRouteToHostException: No route to host: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:41:24,044 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.NoRouteToHostException: No route to host: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:41:39,041 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.NoRouteToHostException: No route to host: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:41:42,048 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.NoRouteToHostException: No route to host: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:41:57,046 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.NoRouteToHostException: No route to host: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:42:00,051 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.NoRouteToHostException: No route to host: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:42:15,052 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.NoRouteToHostException: No route to host: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:42:18,056 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.NoRouteToHostException: No route to host: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:42:33,058 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.NoRouteToHostException: No route to host: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:42:36,063 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.NoRouteToHostException: No route to host: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:42:51,065 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.NoRouteToHostException: No route to host: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:42:54,068 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.NoRouteToHostException: No route to host: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:43:09,068 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.NoRouteToHostException: No route to host: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:43:12,073 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.NoRouteToHostException: No route to host: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:43:27,072 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.NoRouteToHostException: No route to host: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:43:30,076 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.NoRouteToHostException: No route to host: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:43:45,078 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.NoRouteToHostException: No route to host: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:43:48,081 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.NoRouteToHostException: No route to host: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:44:03,085 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.NoRouteToHostException: No route to host: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:44:06,088 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.NoRouteToHostException: No route to host: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:44:21,092 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.NoRouteToHostException: No route to host: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:44:24,094 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.NoRouteToHostException: No route to host: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:44:39,094 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.NoRouteToHostException: No route to host: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:44:42,097 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.NoRouteToHostException: No route to host: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:44:57,100 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:45:00,104 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:45:15,106 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:45:18,109 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:45:33,112 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:45:36,115 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:45:51,117 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:45:54,122 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:46:09,124 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:46:12,130 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:46:27,127 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:46:30,132 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:46:45,134 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:46:48,138 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:47:03,137 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:47:06,140 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:47:21,141 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 15:47:24,144 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:00:35,028 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 11578897ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 11578897ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:00:38,030 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.NoRouteToHostException: No route to host: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:00:53,031 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.NoRouteToHostException: No route to host: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:00:56,033 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.NoRouteToHostException: No route to host: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:01:11,035 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.NoRouteToHostException: No route to host: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:01:14,037 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.NoRouteToHostException: No route to host: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:01:29,037 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.NoRouteToHostException: No route to host: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:01:32,039 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.NoRouteToHostException: No route to host: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:01:47,040 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.NoRouteToHostException: No route to host: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:01:50,041 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:02:05,047 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:02:08,049 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:02:23,050 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:02:26,054 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:02:41,059 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:02:44,061 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:02:59,062 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:03:02,065 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:03:17,064 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:03:20,071 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:03:35,072 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:03:38,073 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:03:53,074 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:03:56,078 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:04:11,083 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:04:14,086 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:04:29,087 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:04:32,090 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:04:47,092 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:04:50,098 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:05:05,100 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:05:08,102 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:05:23,105 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:05:26,108 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:05:41,111 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:05:44,114 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:05:59,116 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:06:02,118 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:06:17,119 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:06:20,124 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:06:35,127 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:06:38,130 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:06:53,133 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:06:56,135 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:07:11,139 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:07:14,142 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:07:29,142 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:07:32,145 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:07:47,146 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:07:50,159 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:08:05,150 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:08:08,160 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:08:23,156 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:08:26,165 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:08:41,164 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:08:44,168 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:08:59,169 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:09:02,173 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:09:17,172 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:09:20,177 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:09:35,175 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:09:38,180 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:09:53,182 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:09:56,185 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:10:11,189 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:10:14,191 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:10:29,194 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:10:32,197 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:10:47,201 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:10:50,206 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:11:05,204 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:11:08,208 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:11:23,212 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:11:26,215 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:11:41,216 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:11:44,220 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:11:59,222 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:12:02,226 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:12:17,228 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:12:20,232 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:12:35,232 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:12:38,234 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:12:53,239 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:12:56,241 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:13:11,241 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:13:14,245 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:13:29,249 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:13:32,251 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:13:47,256 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:13:50,258 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:14:05,259 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:14:08,261 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:14:23,265 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:14:26,267 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:14:41,271 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:14:44,274 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:14:59,276 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:15:02,279 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:15:17,278 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:15:20,285 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:15:35,280 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:15:38,289 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:15:53,286 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:15:56,291 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:16:11,292 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:16:14,294 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:16:29,298 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:16:32,302 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:16:47,303 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:16:50,308 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:17:05,305 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:17:08,311 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:17:23,313 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:17:26,317 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:17:41,320 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:17:44,321 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:17:59,325 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:18:02,328 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:18:17,329 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:18:20,335 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:18:35,336 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:18:38,338 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:18:53,340 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:18:56,343 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:19:11,346 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:19:14,349 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:19:29,351 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:19:32,355 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:19:47,355 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:19:50,361 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:20:05,361 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:20:08,364 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:20:23,364 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:20:26,367 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:20:41,372 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:20:44,376 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:20:59,378 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:21:02,380 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:21:17,383 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:21:20,390 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:21:35,390 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:21:38,392 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:21:53,393 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:21:56,396 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:22:11,398 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:22:14,400 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:22:29,407 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:22:32,411 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:22:47,409 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:22:50,417 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:23:05,415 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:23:08,421 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:23:23,418 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:23:26,426 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:23:41,425 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:23:44,430 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:23:59,434 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:24:02,437 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:24:17,439 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:24:20,445 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:24:35,445 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:24:38,449 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:24:53,452 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:24:56,456 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:25:11,460 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:25:14,463 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:25:29,467 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:25:32,470 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:25:47,471 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:25:50,478 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:26:05,479 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:26:08,482 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:26:23,489 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:26:26,492 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:26:41,496 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:26:44,529 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:26:59,501 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:27:02,532 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:27:17,507 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:27:20,539 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:27:35,511 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:27:38,542 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:27:53,518 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:27:56,547 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:28:11,524 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:28:14,550 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:28:29,529 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:28:32,554 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:28:47,536 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:28:50,561 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:29:05,540 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:29:08,564 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:29:23,547 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:29:26,569 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:29:41,551 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:29:44,573 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:29:59,557 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:30:02,577 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:30:17,564 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:30:20,582 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:30:35,568 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:30:38,586 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:30:53,575 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:30:56,590 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:31:11,580 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:31:14,596 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:31:29,590 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:31:32,600 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:31:47,596 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:31:50,604 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:32:05,599 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:32:08,607 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:32:23,606 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:32:26,610 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:32:41,613 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:32:44,617 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:32:59,621 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:33:02,623 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:33:17,628 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:33:20,635 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:33:35,633 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:33:38,638 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:33:53,639 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:33:56,643 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:34:11,649 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:34:14,652 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:34:29,657 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:34:32,659 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:34:47,661 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:34:50,667 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:35:05,668 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:35:08,671 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:35:23,679 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:35:26,681 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:35:41,686 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:35:44,689 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:35:59,693 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:36:02,695 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:36:17,698 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:36:20,705 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:36:35,705 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:36:38,708 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:36:53,708 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:36:56,711 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:37:11,715 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:37:14,719 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:37:29,723 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:37:32,726 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:37:47,727 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:37:50,733 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:38:05,734 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:38:08,736 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:38:23,738 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:38:26,742 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:38:41,745 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:38:44,747 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:38:59,752 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:39:02,754 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:39:17,757 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:39:20,764 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:39:35,767 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:39:38,771 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:39:53,770 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:39:56,806 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:40:11,805 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:40:14,809 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:40:29,809 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:40:32,812 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:40:47,813 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:40:50,820 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:41:05,819 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:41:08,824 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:41:23,824 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:41:26,827 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:41:41,830 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:41:44,833 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:41:59,835 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:42:02,838 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:42:17,838 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:42:20,845 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:42:35,840 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:42:38,849 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:42:53,848 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:42:56,854 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:43:11,859 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:43:14,863 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:43:29,862 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:43:32,868 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:43:47,867 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:43:50,874 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:44:05,873 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:44:08,878 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:44:23,877 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:44:26,880 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:44:41,883 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:44:44,886 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:44:59,888 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:45:02,894 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:45:17,892 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:45:20,898 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:45:35,895 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:45:38,902 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:45:53,904 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:45:56,907 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:46:11,912 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:46:14,915 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:46:29,915 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:46:32,923 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:46:47,920 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:46:50,936 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:47:05,924 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:47:08,940 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:47:23,932 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:47:26,944 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:47:41,934 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:47:44,948 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:47:59,936 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:48:02,955 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:48:17,943 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:48:20,962 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:48:35,946 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:48:38,966 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:48:53,952 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:48:56,970 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:49:11,954 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:49:14,973 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:49:29,956 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:49:32,984 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:49:47,963 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:49:50,988 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:50:05,967 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:50:08,990 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:50:23,973 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:50:26,995 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:50:41,979 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:50:44,998 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:50:59,983 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:51:03,011 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:51:17,989 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:51:21,018 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:51:35,992 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:51:39,023 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:51:54,000 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:51:57,025 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:52:12,005 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:52:15,028 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:52:30,009 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:52:33,033 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:52:48,014 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:52:51,039 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:53:06,021 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:53:09,042 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:53:24,025 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:53:27,045 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:53:42,031 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:53:45,048 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:54:00,036 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:54:03,052 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:54:18,039 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:54:21,058 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:54:36,047 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:54:39,062 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:54:54,049 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:54:57,066 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:55:12,056 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:55:15,070 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:55:30,064 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:55:33,074 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:55:48,067 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:55:51,080 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:56:06,072 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:56:09,085 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:56:24,076 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:56:27,089 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:56:42,080 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:56:45,092 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:57:00,088 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:57:03,098 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:57:18,091 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:57:21,103 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:57:36,099 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:57:39,107 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:57:54,103 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:57:57,111 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:58:12,111 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:58:15,114 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:58:30,117 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:58:33,119 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:58:48,120 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:58:51,130 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:59:06,127 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:59:09,133 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:59:24,130 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:59:27,138 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:59:42,134 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 19:59:45,142 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:00:00,141 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:00:03,145 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:00:18,145 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:00:21,151 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:00:36,152 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:00:39,156 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:00:54,157 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:00:57,160 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:01:12,165 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:01:15,168 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:01:30,168 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:01:33,176 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:01:48,172 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:01:51,183 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:02:06,179 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:02:09,187 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:02:24,186 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:02:27,192 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:02:42,191 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:02:45,194 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:03:00,196 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:03:03,201 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:03:18,199 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:03:21,207 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:03:36,202 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:03:39,209 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:03:54,209 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:03:57,212 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:04:12,214 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:04:15,217 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:04:30,217 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:04:33,221 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:04:48,227 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:04:51,232 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:05:06,229 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:05:09,236 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:05:24,235 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:05:27,240 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:05:42,241 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:05:45,243 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:06:00,243 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:06:03,250 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:06:18,251 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:06:21,258 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:06:36,256 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:06:39,261 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:06:54,264 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:06:57,267 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:07:12,270 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:07:15,273 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:07:30,274 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:07:33,280 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:07:48,280 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:07:51,286 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:08:06,285 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:08:09,290 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:08:24,294 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:08:27,297 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:08:42,299 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:08:45,302 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:09:00,302 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:09:03,309 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:09:18,308 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:09:21,316 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:09:36,312 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:09:39,319 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:09:54,316 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:09:57,323 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:10:12,323 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:10:15,326 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:10:30,326 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:10:33,337 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:10:48,333 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:10:51,343 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:11:06,342 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:11:09,346 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:11:24,348 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:11:27,351 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:11:42,355 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:11:45,358 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:12:00,359 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:12:03,365 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:12:18,363 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:12:21,371 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:12:36,370 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:12:39,376 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:12:54,378 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:12:57,381 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:13:12,385 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:13:15,387 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:13:30,390 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:13:33,396 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:13:48,395 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:13:51,404 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:14:06,401 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:14:09,409 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:14:24,404 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:14:27,413 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:14:42,407 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:14:45,416 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:15:00,414 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:15:03,421 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:15:18,418 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:15:21,428 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:15:36,425 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:15:39,432 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:15:54,428 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:15:57,434 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:16:12,433 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:16:15,438 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:16:30,440 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:16:33,443 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:16:48,443 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:16:51,453 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:17:06,451 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:17:09,457 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:17:24,456 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:17:27,462 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:17:42,463 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:17:45,466 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:18:00,470 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:18:03,474 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:18:18,473 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:18:21,482 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:18:36,480 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:18:39,488 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:18:54,488 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:18:57,492 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:19:12,494 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:19:15,498 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:19:30,498 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:19:33,505 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:19:48,501 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:19:51,512 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:20:06,509 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:20:09,515 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:20:24,517 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:20:27,520 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:20:42,525 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:20:45,528 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:21:00,529 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:21:03,532 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:21:18,533 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:21:21,540 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:21:36,537 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:21:39,545 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:21:54,542 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:21:57,549 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:22:12,550 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:22:15,553 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:22:30,553 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:22:33,559 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:22:48,559 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:22:51,566 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:23:06,564 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:23:09,572 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:23:24,572 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:23:27,575 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:23:42,575 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:23:45,578 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:24:00,580 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:24:03,586 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:24:18,587 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:24:21,593 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:24:36,592 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:24:39,595 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:24:54,598 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:24:57,601 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:25:12,604 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:25:15,607 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:25:30,608 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:25:33,615 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:25:48,616 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:25:51,622 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:26:06,620 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:26:09,625 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:26:24,625 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:26:27,628 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:26:42,631 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:26:45,634 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:27:00,635 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:27:03,641 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:27:18,641 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:27:21,648 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:27:36,646 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:27:39,654 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:27:54,653 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:27:57,658 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:28:12,659 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:28:15,662 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:28:30,665 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:28:33,674 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:28:48,672 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:28:51,682 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:29:06,679 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:29:09,685 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:29:24,687 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:29:27,690 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:29:42,694 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:29:45,696 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:30:00,697 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:30:03,707 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:30:18,702 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:30:21,712 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:30:36,708 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:30:39,715 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:30:54,715 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:30:57,718 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:31:12,721 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:31:15,725 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:31:30,724 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:31:33,732 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:31:48,729 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:31:51,736 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:32:06,736 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:32:09,738 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:32:24,738 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:32:27,740 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:32:42,746 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:32:45,749 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:33:00,754 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:33:03,759 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:33:18,757 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:33:21,763 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:33:36,764 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:33:39,767 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:33:54,767 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:33:57,770 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:34:12,774 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:34:15,777 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:34:30,781 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:34:33,785 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:34:48,785 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:34:51,788 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:35:06,791 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:35:09,794 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:35:24,795 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:35:27,798 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:35:42,803 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:35:45,807 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:36:00,809 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:36:03,812 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:36:18,812 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:36:21,815 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:36:36,818 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:36:39,821 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:36:54,823 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:36:57,827 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:37:12,830 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:37:15,833 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:37:30,838 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:37:33,843 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:37:48,842 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:37:51,847 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:38:06,848 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:38:09,852 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:38:24,854 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:38:27,855 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:38:42,859 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:38:45,863 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:39:00,863 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:39:03,868 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:39:18,868 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:39:21,872 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:39:36,872 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:39:39,876 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:39:54,878 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:39:57,880 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:40:12,885 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:40:15,888 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:40:30,889 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:40:33,894 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:40:48,894 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:40:51,898 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:41:06,898 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:41:09,902 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:41:24,905 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:41:27,907 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:41:42,909 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:41:45,912 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:42:00,913 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:42:03,918 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:42:18,924 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:42:21,927 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:42:36,928 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:42:39,931 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:42:54,937 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:42:57,941 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:43:12,943 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:43:15,946 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:43:30,947 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:43:33,951 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:43:48,953 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:43:51,955 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:44:06,957 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:44:09,961 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:44:24,965 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:44:27,969 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:44:42,971 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:44:45,973 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:45:00,975 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:45:03,981 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:45:18,980 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:45:21,984 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:45:36,983 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:45:39,986 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:45:54,990 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:45:57,992 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:46:13,003 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:46:16,006 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:46:31,005 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:46:34,013 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:46:49,011 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:46:52,018 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:47:07,019 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:47:10,022 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:47:25,026 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:47:28,028 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:47:43,032 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:47:46,036 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:48:01,035 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:48:04,042 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:48:19,039 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:48:22,044 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:48:37,047 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:48:40,051 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:48:55,056 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:48:58,058 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:49:13,063 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:49:16,067 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:49:31,067 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:49:34,073 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:49:49,069 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:49:52,077 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:50:07,077 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:50:10,081 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:50:25,082 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:50:28,085 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:50:43,089 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:50:46,093 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:51:01,096 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:51:04,103 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:51:19,102 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:51:22,106 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:51:37,108 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:51:40,110 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:51:55,113 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:51:58,116 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:52:13,120 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:52:16,122 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:52:31,126 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:52:34,130 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:52:49,132 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:52:52,135 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:53:07,139 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:53:10,142 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:53:25,146 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:53:28,150 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:53:43,149 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:53:46,152 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:54:01,162 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:54:04,167 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:54:19,166 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:54:22,171 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:54:37,173 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:54:40,177 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:54:55,181 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:54:58,183 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:55:13,188 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:55:16,191 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:55:31,195 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:55:34,201 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:55:49,198 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:55:52,205 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:56:07,205 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:56:10,208 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:56:25,212 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:56:28,215 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:56:43,219 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:56:46,221 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:57:01,221 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:57:04,226 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:57:19,227 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:57:22,231 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:57:37,239 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:57:40,241 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:57:55,244 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:57:58,248 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:58:13,249 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:58:16,252 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:58:31,252 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:58:34,259 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:58:49,259 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:58:52,262 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:59:07,263 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:59:10,266 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:59:25,271 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:59:28,274 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:59:43,274 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 20:59:46,278 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:00:01,277 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:00:04,285 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:00:19,285 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:00:22,289 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:00:37,288 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:00:40,292 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:00:55,294 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:00:58,297 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:01:13,302 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:01:16,306 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:01:31,305 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:01:34,312 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:01:49,309 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:01:52,317 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:02:07,312 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:02:10,321 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:02:25,318 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:02:28,325 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:02:43,324 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:02:46,329 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:03:01,328 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:03:04,335 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:03:19,335 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:03:22,338 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:03:37,340 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:03:40,343 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:03:55,345 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:03:58,348 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:04:13,351 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:04:16,355 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:04:31,355 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:04:34,362 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:04:49,361 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:04:52,364 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:05:07,366 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:05:10,369 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:05:25,371 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:05:28,374 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:05:43,378 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:05:46,381 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:06:01,383 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:06:04,389 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:06:19,388 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:06:22,392 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:06:37,395 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:06:40,399 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:06:55,402 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:06:58,405 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:07:13,410 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:07:16,413 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:07:31,417 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:07:34,424 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:07:49,422 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:07:52,427 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:08:07,429 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:08:10,431 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:08:25,432 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:08:28,435 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:08:43,438 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:08:46,441 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:09:01,444 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:09:04,450 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:09:19,449 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:09:22,455 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:09:37,455 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:09:40,459 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:09:55,459 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:09:58,461 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:10:13,466 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:10:16,470 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:10:31,472 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:10:34,475 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:10:49,475 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:10:52,478 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:11:07,482 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:11:10,486 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:11:25,487 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:11:28,489 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:11:43,498 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:11:46,502 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:12:01,505 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:12:04,512 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:12:19,509 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:12:22,516 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:12:37,514 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:12:40,521 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:12:55,521 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:12:58,526 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:13:13,532 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:13:16,535 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:13:31,538 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:13:34,545 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:13:49,542 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:13:52,549 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:14:07,548 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:14:10,554 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:14:25,554 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:14:28,556 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:14:43,562 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:14:46,566 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:15:01,565 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:15:04,572 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:15:19,570 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:15:22,575 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:15:37,575 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:15:40,578 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:15:55,583 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:15:58,585 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:16:13,592 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:16:16,596 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:16:31,595 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:16:34,603 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:16:49,602 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:16:52,607 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:17:07,605 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:17:10,609 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:17:25,614 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:17:28,616 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:17:43,619 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:17:46,622 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:18:01,622 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:18:04,629 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:18:19,630 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:18:22,632 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:18:37,634 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:18:40,637 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:18:55,642 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:18:58,644 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:19:13,648 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:19:16,652 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:19:31,652 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:19:34,658 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:19:49,659 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:19:52,661 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:20:07,663 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:20:10,666 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:20:25,671 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:20:28,674 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:20:43,678 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:20:46,680 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:21:01,682 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:21:04,688 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:21:19,692 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:21:22,694 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:21:37,698 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:21:40,700 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:21:55,705 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:21:58,709 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:22:13,713 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:22:16,716 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:22:31,714 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:22:34,721 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:22:49,720 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:22:52,725 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:23:07,728 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:23:10,731 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:23:25,737 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:23:28,740 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:23:43,744 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:23:46,746 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:24:01,748 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:24:04,754 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:24:19,752 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:24:22,759 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:24:37,758 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:24:40,761 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:24:55,770 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:24:58,773 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:25:13,778 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:25:16,781 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:25:31,785 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:25:34,790 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:25:49,788 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:25:52,794 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:26:07,795 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:26:10,799 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:26:25,799 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:26:28,803 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:26:43,807 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:26:46,811 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:27:01,814 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:27:04,820 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:27:19,818 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:27:22,824 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:27:37,824 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:27:40,827 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:27:55,830 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:27:58,833 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:28:13,835 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:28:16,841 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:28:31,840 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:28:34,844 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:28:49,846 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:28:52,847 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:29:07,853 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:29:10,855 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:29:25,859 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:29:28,861 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:29:43,863 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:29:46,869 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:30:01,869 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:30:04,876 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:30:19,872 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:30:22,880 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:30:37,878 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:30:40,884 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:30:55,885 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:30:58,887 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:31:13,890 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:31:16,898 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:31:31,894 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:31:34,904 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:31:49,899 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:31:52,907 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:32:07,906 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:32:10,945 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:32:25,915 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:32:28,949 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:32:43,917 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:32:46,957 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:33:01,920 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:33:04,963 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:33:19,926 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:33:22,967 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:33:37,933 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:33:40,970 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:33:55,939 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:33:58,973 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:34:13,943 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:34:16,980 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:34:31,946 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:34:34,985 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:34:49,954 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:34:52,989 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:35:07,958 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:35:10,993 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:35:25,965 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:35:28,996 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:35:43,969 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:35:47,003 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:36:01,972 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:36:05,010 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:36:19,977 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:36:23,013 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:36:37,981 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:36:41,017 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:36:55,987 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:36:59,021 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:37:13,994 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:37:17,024 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:37:31,998 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:37:35,032 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:37:50,007 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:37:53,035 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:38:08,011 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:38:11,040 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:38:26,020 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:38:29,045 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:38:44,024 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:38:47,048 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:39:02,027 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:39:05,059 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:39:20,033 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:39:23,062 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:39:38,039 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:39:41,067 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:39:56,042 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:39:59,069 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:40:14,046 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:40:17,077 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:40:32,048 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:40:35,087 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:40:50,056 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:40:53,092 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:41:08,063 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:41:11,095 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:41:26,070 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:41:29,098 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:41:44,074 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:41:47,104 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:42:02,077 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:42:05,110 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:42:20,082 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:42:23,114 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:42:38,090 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3002ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:42:41,118 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:42:56,097 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:42:59,122 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:43:14,101 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:43:17,127 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:43:32,105 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:43:35,134 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:43:50,108 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:43:53,138 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:44:08,115 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:44:11,141 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:44:26,118 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:44:29,146 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:44:44,121 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3000ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:44:47,152 WARN [LOAD-ROLES] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:98) at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 22 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted 2020-08-31 21:45:02,127 WARN [LOAD-USERS] load failed org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66) at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56) at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:135) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:88) at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:54) at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 3001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 23 common frames omitted Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 common frames omitted Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor88.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ... 15 common frames omitted Caused by: java.net.SocketTimeoutException: connect timed out at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:606) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 17 common frames omitted