wget http://soft.vpser.net/lnmp/ext/reset_mysql_root_password.sh
sh reset_mysql_root_password.sh

/usr/local/mysql/bin/mysqld_safe –skip-grant-tables >/dev/null 2>1 

mysql mysql -uroot　//登陸
mysql> UPDATE user SET Password=PASSWORD(‘new password') where USER='root';
mysql> FLUSH PRIVILEGES;
mysql> quit

/etc/init.d/mysql start