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linux下mysql的root密码忘记解决方法_MySQL

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Release: 2016-06-01 13:10:20
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1.首先确认服务器处于安全的状态,也就是没有人能够任意地连接MySQL数据库。
因为在重新设置MySQL的root密码的期间,MySQL数据库完全出于没有密码保护的
状态下,其他的用户也可以任意地登录和修改MySQL的信息。可以采用将MySQL对
外的端口封闭,并且停止Apache以及所有的用户进程的方法实现服务器的准安全
状态。最安全的状态是到服务器的Console上面操作,并且拔掉网线。 
2.修改MySQL的登录设置:.

# vi /etc/my.cnf
Copy after login
Copy after login

在[mysqld]的段中加上一句:skip-grant-tables
例如:

[mysqld] datadir=/var/lib/mysql socket=/var/lib/mysql/mysql.sock skip-grant-tables
Copy after login

保存并且退出vi。
3.重新启动mysqld

# /etc/init.d/mysqld restart Stopping MySQL: [ OK ] Starting MySQL: [ OK ]
Copy after login
Copy after login

4.登录并修改MySQL的root密码

# /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
Copy after login

5.将MySQL的登录设置修改回来

# vi /etc/my.cnf
Copy after login
Copy after login

将刚才在[mysqld]的段中加上的skip-grant-tables删除
保存并且退出vi。
6.重新启动mysqld

# /etc/init.d/mysqld restart Stopping MySQL: [ OK ] Starting MySQL: [ OK ]
Copy after login
Copy after login

OK 所有操作均已完成 大吉大利

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