[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@centos mysql]# ps aux |grep mysq*
root26430.00.245361224 ?S01:090:00 /bin/sh /usr/local/mysql/bin/mysqld_safe –datadir=/usr/local/mysql/var –pid-file=/usr/local/mysql/var/centos.pid
mysql27570.01.2369766608 ?Sl01:090:00 /usr/local/mysql/libexec/mysqld –basedir=/usr/local/mysql –datadir=/usr/local/mysql/var –user=mysql –log-error=/usr/local/mysql/var/centos.err –pid-file=/usr/local/mysql/var/centos.pid –socket=/tmp/mysql.sock –port=3306
root47880.00.13920684 pts/2R+11:110:00 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@centos mysql]# kill 2643
[root@centos mysql]# kill 2757
启动Mysql 就ok 了
[root@centos mysql]# service mysqld start
Starting MySQL.
偶的报错
来自转载http://hi.baidu.com/xiaoyan_it/item/02298d5f3b98008c8d12ed67
Original: https://www.cnblogs.com/hshanghai/p/3625793.html
Author: 失忆王子
Title: MySQL manager or server PID file could not be found!
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