通过mysql -u用户名 -p密码 的命令连接 Mysql数据库时

报错 "can't connect to local mysql serverthrough  socket'/var/run/mysqld/mysqld.sock'

 mysql -u root -p
 Enter password: 

 ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)

解决方法：

在不重新安装mysql的情况下，通过如下命令来解决，具体的就是先停止mysql服务，再重新开启mysql服务

cd /etc/init.d

sudo service mysql stop

sudo service mysql start

执行后便可以启用mysql数据库

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