[root@centos var]# service mysqld stop MySQL manager or server PID file could not be found! [FAILED] 解决办法： 首先查看一下进程 [root@irxpert-test /]# ps aux |grep mysq* root 10274 0.0 0.0 6816... mysql 启动错误-server PID file could not be found 2016-11-13 0