方法一:
一个中心:停止服务,载入安全模式
killall -TERM mysqld
然后
mysqld --skip-grant-tables &
两个基本点:更新user表,刷新权限
use mysql; update user set password=password("newpass") where user="root"; flush privileges;
如果不方便用mysql的cli界面交互
调用mysqladmin即可
mysqladmin -u root flush-privileges password "newpassword"
方法二(debian亲测):
直接使用/etc/mysql/debian.cnf文件中[client]节提供的用户名和密码 备用
mysql -u debian-sys-maint -p
Enter password: <输入[client]节的密码>
mysql> show databases;
mysql> use mysql;
mysql> show tables;
这个时候使用user表
mysql> UPDATE user SET Password=PASSWORD(‘newpassword’) where USER=’root’;
Query OK, 3 rows affected (0.00 sec)
Rows matched: 3 Changed: 3 Warnings: 0
mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.00 sec)
mysql> quit
# mysql -u root -p
Enter password: <输入新设的密码newpassword>
mysql>
方法三(centos 6.2亲测,等同于方法一):
1.确认服务器处于安全的状态,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,不连网操作最好,实在不行挑个好时候,操作要快
2.修改MySQL的登录设置:
# vi /etc/my.cnf
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
保存并且退出vi。
3.重新启动mysqld
# /etc/init.d/mysqld restart Stopping MySQL: [ OK ] Starting MySQL: [ OK ]
4.登录并修改MySQL的root密码
[root@vps ~]# mysql Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 2 Server version: 5.1.61 Source distribution Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
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('jpuyy') where user = 'root'; Query OK, 2 rows affected (0.00 sec) Rows matched: 2 Changed: 2 Warnings: 0
mysql> flush privileges; Query OK, 0 rows affected (0.00 sec) mysql> quit Bye
5.将MySQL的登录设置修改回来
# 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。
6.重新启动mysqld
# /etc/init.d/mysqld restart Stopping MySQL: [ OK ] Starting MySQL: [ OK ]
附加windows下的重置方法
开始-运行-cmd
net stop mysql
然后进入到mysql的安装位置,运行如下命令
mysqld-nt.exe –skip-grant-tables
再打开一个cmd窗口
运行msyql -u root -p,不用输入密码即可进入
> use mysql
> UPDATE user SET Password=PASSWORD(‘newpassword’) where USER=’root’;
>flush privileges;
最后在任务管理器里将mysql-nt的任务和进程都停止掉(如果不停掉会出现“mysql服务无法启动。系统出错。系统发生1067错误。进程意外中止。”),接下来
net start mysql
密码重置完成。
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