# rpm ivh http://dev.mysql.com/get/mysql-community-release-el6-5.noarch.rpm

# yum install -y mysql-server mysql-devel
# systemctl start mysqld
# mysql -uroot -p 密码为空
mysql>show databases;
mysql> set password for root@localhost=password ('your_root_pass');
mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' with grant option;
mysql> flush privileges;
mysql> exit