cdh启动失败提示cloudera-scm-server dead but pid file exists

最新推荐文章于 2023-07-31 11:27:50 发布

原创最新推荐文章于 2023-07-31 11:27:50 发布 · 1.5k 阅读

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阿里云机器购买内存后，停掉service agent，运维重启后启动集群服务失败，提示cloudera - scm - server dead but pid file exists。查看日志发现是无法连接数据库，最终确定是mysql未启动，启动mysql后再启动集群即可解决问题。

[root@mini ~]# /opt/cloudera-manager/cm-5.15.0/etc/init.d/cloudera-scm-server status
cloudera-scm-server dead but pid file exists

阿里云机器购买内存后，自己在界面先停掉service agent后，运维人员重启后，自己再启动集群服务失败，提示上述错误，

此时，查看日志即可知道是什么错误导致的！！！cd /opt/cloudera-manager/cm-5.15.0/log/cloudera-scm-server

日志提示 Caused by: org.hibernate.exception.GenericJDBCException: Could not open connection
at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:54)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:125)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:110)
at org.hibernate.engine.jdbc.internal.LogicalConnectionImpl.obtainConnection(LogicalConnectionImpl.java:221)
at org.hibernate.engine.jdbc.internal.LogicalConnectionImpl.getConnection(LogicalConnectionImpl.java:157)
at org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.doBegin(JdbcTransaction.java:67)
at org.hibernate.engine.transaction.spi.AbstractTransactionImpl.begin(AbstractTransactionImpl.java:160)
at org.hibernate.internal.SessionImpl.beginTransaction(SessionImpl.java:1426)
at org.hibernate.ejb.TransactionImpl.begin(TransactionImpl.java:59)
... 28 more
Caused by: java.sql.SQLException: Connections could not be acquired from the underlying database!

恍然大悟，原来是我的mysql没启动起来，所以这里要先启动mysql后再启动集群即可，压根不是什么pid的问题！！