先结束mysql进程 #killall mysqld
用mysql安全模式运行并跳过权限 #mysqld_safe
–skip-grant-tables 用root登录，此时不需要密码 #mysql –u root
现在开始重设密码 #mysql> use
mysql;
Reading table information for completion of table and column
names
You can turn off this feature to get a quicker startup with –A
Database changed
Mysql> upsate user set Password=new password where
user = ‘root’ ;
Query OK, 2 rows affected (0.02 sec)
Rows matched: 2
Changed: 2 Warnings: 0
Mysql> quit
重新启动mysql服务 #service mysqld
restart