MySQL启动报错： Failed to start LSB start and stop MySQL

MySQL启动报错： Failed to start LSB: start and stop MySQL.与连接而数据库报错：ERROR 2002 (HY000): Can’t connect to local MySQL server through socket ‘/var/lib/mysql/mysql.sock’ (2)

今天在配置部署一台MySQL服务器，安装成功后，自动启动了 mysql服务，此时默认的mysql的data是在/var/lib/mysql下的，我想把他改成/mysql/mysql-data下，于是
systemctl stop mysql
ss -antup | grep mysql
已经停止mysql服务
修改配置文件
vim /etc/my.cnf
datadir=/mysql/mysql-data
socket=/mysql/mysql-data/mysql.sock

mkdir -p /mysql/mysql
启动服务：systemctl start mysql
结果报错： Failed to start LSB: start and stop MySQL.
经过一番排查和原来的data目录一对比后，发现是权限问题
查看配置文件

ps -ef | grep mysql,发现启动用户是mysql
于是：
chown mysql:mysql /mysql/mysql-data
systemctl start mysql 启动成功

接着我进入数据库
mysql -u*** -p****************
结果报错：ERROR 2002 (HY000): Can’t connect to local MySQL server through socket ‘/var/lib/mysql/mysql.sock’ (2)
网上查阅了资料说，我们连接数据库是是默认使用host=localhost去连接的，当用localhost连接mysql服务端时，mysql客户端会认为是连接本机，所以会尝试以socket文件方式连接（socket文件方式，比ip：端口方式效率更高），这时候就会根据配置文件/etc/my.cn中配置的socket路径去找，这里我们修改了mysqld也就是服务器的socket路径，但是客户端的socket文件我们没有定义，回去默认的路径下/var/lib/mysql/mysql.sock找，结果找不到就会出现这个报错

解决方法：
修改配置文件
vim /etc/my.cnf
[client]
default-character-set=utf8
socket=/mysql/mysql-data/mysql.sock

[mysql]
default-character-set=utf8
socket=/mysql/mysql-data/mysql.sock

重启数据库：systemctl restart mysql
mysql连接成功

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MySQL启动报错： Failed to start LSB start and stop MySQL

MySQL启动报错： Failed to start LSB: start and stop MySQL.与连接而数据库报错：ERROR 2002 (HY000): Can’t connect to local MySQL server through socket ‘/var/lib/mysql/mysql.sock’ (2)

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