mysql5.6 修改数据目录后，客户端无法登录的解决

一.  场景描述

   1. mysql版本： MySQL-server-5.6.35-1.el6.x86_64.rpm

   2. mysql原始目录：/var/lib/mysql

   3.  mysql修改后的目录： /home/mysqldata

二.  故障描述

   1.  通过mysql -uroot -p 登录，输入密码回车后如下提示：

     ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2) 的解决办法

      解决办法：创建软链接

       ln -s /home/mysqldata/mysql.sock /var/lib/mysql/mysql.sock

    2. 通过mysql -uroot -p 登录，输入密码回车后如下提示：

[root@TEST40 etc]# mysql -uroot -p
Enter password:
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)

解决方法：

     #mv /var/lib/mysql/mysql.sock  /tmp

结果如下：

[root@TEST40 mysql]# mysql -uroot -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.6.35-log MySQL Community Server (GPL)

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