yum install mysql 

yum install mysql-server

开启服务  service mysqld start   或  /etc/init.d/mysqld start

设置root密码   mysqladmin password '123'   ;  

root账户登录后，创建新用户

 grant all privileges on *.* to zhoufeng@'%' identified by '123';   //创建新用户zhoufeng  ，密码为123  并且给他所有的权限

grant all privileges on *.* to zhoufeng@localhost identified by '123';   //给该用户在localhost上面的权限，和密码