[root@ufuso ~]# /etc/rc.d/init.d/mysqld restart
mysqld を停止中:                                           [  OK  ]
Another MySQL daemon already running with the same unix socket.　←　trouble
mysqld を起動中:                                           [失敗]


[root@ufuso ~]# mv /var/lib/mysql/mysql.sock /var/lib/mysql/mysql.sock.bak
　←　mysql.sockを削除

[root@ufuso ~]# /etc/rc.d/init.d/mysqld restart　←　mysqlを再起動
mysqld を停止中:                                           [  OK  ]
mysqld を起動中:                                           [  OK  ]