A workaround appears that "/var/lib/mysql/mysql.sock" does not exist

Most of this is because your MySQL is installed using RPM, it will automatically look for/var/lib/mysql/mysql.sock this file,
Log in to MySQL via a UNIX socket.
Common solutions are as follows:
1.
Create/Modify file/etc/my.cnf, add/modify at least one row
[MySQL]
[Client]
Socket =/tmp/mysql.sock
#在这里写上你的mysql. Sock the correct position, usually not under/tmp/or under/var/lib/mysql/

2.
Specify an IP address to connect to MySQL using TCP instead of using the local sock method
#mysql-h127.0.0.1-uuser-ppassword

I did it this way.

3.
Add a connection for mysql.sock, such as the actual mysql.sock under/tmp/, then
#ln-S/tmp/mysql.sock/var/lib/mysql/mysql.sock

A workaround appears that "/var/lib/mysql/mysql.sock" does not exist