2021-09-18 01:57:57,419 WARN [LOAD-USERS] load failed

org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 30000ms.
	at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:82)
	at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612)
	at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669)
	at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700)
	at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712)
	at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783)
	at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804)
	at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66)
	at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56)
	at com.alibaba.nacos.config.server.auth.ExternalUserPersistServiceImpl.getUsers(ExternalUserPersistServiceImpl.java:136)
	at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.getUsersFromDatabase(NacosUserDetailsServiceImpl.java:89)
	at com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl.reload(NacosUserDetailsServiceImpl.java:55)
	at sun.reflect.GeneratedMethodAccessor129.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84)
	at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 30000ms.
	at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689)
	at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196)
	at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161)
	at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128)
	at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:158)
	at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:116)
	at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:79)
	... 23 common frames omitted
Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up.
	at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110)
	at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97)
	at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89)
	at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63)
	at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73)
	at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:906)
	at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:831)
	at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:456)
	at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:246)
	at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:197)
	at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138)
	at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354)
	at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202)
	at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473)
	at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71)
	at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719)
	at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	... 3 common frames omitted
Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
	at sun.reflect.GeneratedConstructorAccessor87.newInstance(Unknown Source)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
	at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
	at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
	at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
	at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
	at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91)
	at com.mysql.cj.NativeSession.connect(NativeSession.java:144)
	at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:850)
	... 15 common frames omitted
Caused by: java.net.ConnectException: Connection refused (Connection refused)
	at java.net.PlainSocketImpl.socketConnect(Native Method)
	at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
	at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
	at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
	at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
	at java.net.Socket.connect(Socket.java:607)
	at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155)
	at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65)
	... 17 common frames omitted
2021-09-18 01:58:27,405 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 30000ms.
	at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:82)
	at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:612)
	at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669)
	at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700)
	at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:712)
	at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:783)
	at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:804)
	at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:66)
	at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePaginationHelperImpl.fetchPage(ExternalStoragePaginationHelperImpl.java:56)
	at com.alibaba.nacos.config.server.auth.ExternalRolePersistServiceImpl.getRolesByUserName(ExternalRolePersistServiceImpl.java:101)
	at com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl.reload(NacosRoleServiceImpl.java:77)
	at sun.reflect.GeneratedMethodAccessor130.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84)
	at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 30000ms.
	at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:689)
	at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:196)
	at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161)
	at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:128)
	at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:158)
	at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:116)
	at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:79)
	... 22 common frames omitted
Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up.
	at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110)
	at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97)
	at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89)
	at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63)
	at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73)
	at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:906)
	at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:831)
	at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:456)
	at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:246)
	at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:197)
	at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138)
	at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354)
	at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202)
	at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473)
	at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71)
	at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:719)
	at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:705)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	... 3 common frames omitted
Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
	at sun.reflect.GeneratedConstructorAccessor87.newInstance(Unknown Source)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
	at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
	at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
	at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
	at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
	at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91)
	at com.mysql.cj.NativeSession.connect(NativeSession.java:144)
	at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:850)
	... 15 common frames omitted
Caused by: java.net.ConnectException: Connection refused (Connection refused)
	at java.net.PlainSocketImpl.socketConnect(Native Method)
	at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
	at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
	at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
	at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
	at java.net.Socket.connect(Socket.java:607)
	at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155)
	at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65)
	... 17 common frames omitted