vim /etc/my.cnf

[mysqld] 
datadir=/var/lib/mysql 
socket=/var/lib/mysql/mysql.sock
skip-grant-tables

service mysqld restart
Stopping MySQL: [ OK ] 
Starting MySQL: [ OK ]

Welcome to the MySQL monitor. Commands end with ; or \g. 
Your MySQL connection id is 3 to server version: 3.23.56 
Type ‘help;' or ‘\h' for help. Type ‘\c' to clear the buffer. 
mysql> USE mysql ; 
Database changed 
mysql> UPDATE user SET Password = password ( 'new-password' ) WHERE User = 'root' ; 
Query OK, 0 rows affected (0.00 sec) 
Rows matched: 2 Changed: 0 Warnings: 0 
mysql> flush privileges ; 
Query OK, 0 rows affected (0.01 sec) 
mysql> quit

vim /etc/my.cnf

service mysqld restart 
Stopping MySQL: [ OK ] 
Starting MySQL: [ OK ]

GRANT ALL PRIVILEGES ON . TO root@'%' IDENTIFIED BY ‘your password'; 

vi /etc/sysconfig/iptables

-A RH-Firewall-1-INPUT -m state –state NEW -m tcp -p tcp –dport 3306 -j ACCEPT

service iptables restart