Sonarqube 与Mysql的数据库连接中出现Sonar错误

我们突然开始在声纳中发现任何可能的错误

Caused by: org.sonar.api.database.DatabaseException: Cannot open connection to database: Cannot create PoolableConnectionFactory (Communications link failure

Last packet sent to the server was 0 ms ago.)
    at org.sonar.api.database.AbstractDatabaseConnector.testConnection(AbstractDatabaseConnector.java:182) [sonar-plugin-api-2.2.jar:na]
    at org.sonar.api.database.AbstractDatabaseConnector.start(AbstractDatabaseConnector.java:94) [sonar-plugin-api-2.2.jar:na]
    at org.sonar.server.database.JndiDatabaseConnector.start(JndiDatabaseConnector.java:65) [JndiDatabaseConnector.class:na]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [na:1.6.0_21]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) [na:1.6.0_21]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) [na:1.6.0_21]
    at java.lang.reflect.Method.invoke(Method.java:597) [na:1.6.0_21]
    at org.picocontainer.lifecycle.ReflectionLifecycleStrategy.invokeMethod(ReflectionLifecycleStrategy.java:110) [picocontainer-2.10.2.jar:na]
    ... 35 common frames omitted
Caused by: org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Communications link failure

Last packet sent to the server was 0 ms ago.)
    at org.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1225) [commons-dbcp-1.2.2.jar:1.2.2]
    at org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:880) [commons-dbcp-1.2.2.jar:1.2.2]
    at org.sonar.server.database.JndiDatabaseConnector.getConnection(JndiDatabaseConnector.java:154) [JndiDatabaseConnector.class:na]
    at org.sonar.api.database.AbstractDatabaseConnector.testConnection(AbstractDatabaseConnector.java:178) [sonar-plugin-api-2.2.jar:na]
    ... 42 common frames omitted
Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

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检查mysql错误日志和/或网络连接

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99%的几率不是声纳

我不确定在哪里检查mysql日志，因为它是pr服务器，所以我的访问权限有限