MySQL启动报错 The server quit without updating PID file 解决方案

原因分析：上一次关机前未正常关闭MySQL

解决方案：删除进程锁文件 /var/lock/subsys/mysql

service mysqld start
Starting MySQL...[ERROR] The server quit without updating PID file (/usr/local/mysql/data/mysqld.pid). 

service mysqld status
MySQL is not running, but lock file (/var/lock/subsys/mysql[失败]ts

rm /var/lock/subsys/mysql

service mysqld status
MySQL is not running                                       [失败]

service mysqld start
Starting MySQL..                                           [  确定  ]

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