linux mysql下忘记root密码解决办法

1 修改MySQL的登录设置

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# vi /etc/my.cnf

在[mysqld]的中加上一句：skip-grant-tables 

2 重新启动mysqld

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# /etc/init.d/mysqld restart 

Stopping MySQL: [ OK ]

Starting MySQL: [ OK ]

3 登录并修改MySQL的root密码

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# /usr/bin/mysql 

Welcome to the MySQL monitor. Commands end with ; or \g. 

Your MySQL connection id is 3 to server version: 3.23.56 

Type 'help;' or '\h' for help. Type '\c' to clear the buffer. 

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> UPDATE user SET Password = password ( 'new-password' ) WHERE User =
'root' ; 

Query OK, 0 rows affected (0.00 sec) 

Rows matched: 2 Changed: 0 Warnings: 0 

mysql> flush privileges ; 

Query OK, 0 rows affected (0.01 sec) 

mysql> quit 

Bye

4 将MySQL的登录设置修改回来

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# vi /etc/my.cnf 

将刚才在[mysqld]的段中加上的skip-grant-tables删除 

保存并且退出vi。

5 重新启动mysqld

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# /etc/init.d/mysqld restart 

Stopping MySQL: [ OK ] 

Starting MySQL: [ OK ]

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