Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock'

MySQL已经被我移到数据盘了，本地连接数据库会报错：Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock'

但是远程是可以连接的，my.cnf设置mysql的根目录也改成了数据盘的地址，还要在加上client的参数，设置如下：

[client]
socket = /home/data/mysql/mysql.sock

之后重启下mysql就可以了