Mysql 报错PID file could not be found!解决办法

今天想把之前在cetnos6上编译安装的mariadb改下PATH环境变量，操作几次之后，关闭或重启mysql就失败了，提示如下：

[root@web1 ~]# service mysqld stop
MySQL server PID file could not be found!                  [FAILED]
google了下，解决方案如下：

查看一下进程：

[root@web1 ~]# ps aux |grep mysq*
mysql     16058  0.2 11.2 995540 112956 ?       Sl   14:07   0:01 mysqld
root      17233  0.0  0.0 103316   848 pts/2    S+   14:16   0:00 grep mysq*

如果看到上面的内容，那说明，Mysql的进程卡死了，这时用就要把这些卡死的进程都关闭：

[root@web1 ~]# kill -9 16058
[root@web1 ~]# kill -9 17233
-bash: kill: (17233) - No such process

再启动Mysql 就行了；可以多重启几次，最后就成功启动了。

[root@web1 ~]# service mysqld stop
MySQL server PID file could not be found!                  [FAILED]
[root@web1 ~]# service mysqld restart
MySQL server PID file could not be found!                  [FAILED]
Starting MySQL..                                           [  OK  ]
[root@web1 ~]# service mysqld restart
Shutting down MySQL.                                       [  OK  ]
Starting MySQL..                                           [  OK  ]
[root@web1 ~]#