$ sudo yum install mysql-server
$ vi /etc/my.cnf
-----
[mysqld]
:
character-set-server = utf8
-----
$ /etc/rc.d/init.d/mysqld start
$ chkconfig mysqld on
$ mysql -u root
mysql> use mysql;
mysql> GRANT ALL PRIVILEGES ON *.* TO ユーザ名@localhost IDENTIFIED BY 'パスワード' WITH GRANT OPTION;
mysql> GRANT ALL PRIVILEGES ON *.* TO ユーザ名@'%' IDENTIFIED BY 'パスワード' WITH GRANT OPTION;
mysql> flush privileges;
mysql> delete from users where user='root';
mysql> delete from users where password='';
mysql> flush privileges;