Mysql启动失败解决办法

mysql意外停止,启动报错信息如下：

     

 

启动失败错误信息：
[root@iZ253faoqixZ data]# service mysqld restart
MySQL server PID file could not be found! [FAILED]
Starting MySQL.The server quit without updating PID file (/[FAILED]server/mysql/data/iZ253faoqixZ.pid).

先查看下内存和磁盘占用情况:

修改mysql/my.cnf   将innodb_buffer_pool_size打开 修改为16即可