[MySQL] ERROR Can't connect to local MySQL server through socket

[eric_tu@localhost ~]$ mysql
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (13)

[eric_tu@localhost ~]$ mysql -u eric_tu -h 127.0.0.1 -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 7
Server version: 5.7.18 MySQL Community Server (GPL)

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mysql> 

mysql> show databases;
mysql> use Msgboard;