ERROR 2002 (HY000): Can’t connect to local MySQL server through socket ‘/var/lib /mysql/mysql.sock’ (2)

I tried the following steps:

1. Log in as super user or use sudo
2. Open /etc/mysql/my.cnf using gedit
3. Check the all the configuration
4. Find bind-address, and change its value to the database server host machine’s IP address. For me, it was localhost or 127.0.0.1
5. Save and close the file.
6. Come back to terminal and execute sudo service mysql start

And it worked for me.