Do you already have another mysqld server running on socket: /var/lib/mysql/mysql.sock ?

安装完 MySQL，启动服务报错。

1、启动命令

service mysql start

2、报错信息

2019-01-31 17:17:39 1721 [ERROR] Can't start server : Bind on unix socket: Permission denied
2019-01-31 17:17:39 1721 [ERROR] Do you already have another mysqld server running on socket: /var/lib/mysql/mysql.sock ?
2019-01-31 17:17:39 1721 [ERROR] Aborting

3、解决方案

给 mysql.sock 文件所在的目录赋予权限，命令如下：

cd /var/lib/mysql
chown -R mysql:mysql  ./