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HomeDatabaseMysql Tutoriallinux下忘记密码怎么办,如何重置密码

文章转自:http://www.bitsCN.com/os/201104/86881.html

以下是网上的方法,我用的是第一种方法,经测试有效。

方法一:

# /etc/init.d/mysql stop

# mysqld_safe --user=mysql --skip-grant-tables --skip-networking &

# mysql -u root mysql

mysql> update user set password=password(newpassword) where user=root;

mysql> flush privileges;

mysql> quit

# /etc/init.d/mysql restart

# mysql -uroot -p

enter password:

mysql>

方法二:

直接使用/etc/mysql/debian.cnf文件中[client]节提供的用户名和密码:

# mysql -udebian-sys-maint -p

enter password:

mysql> update user set password=password(newpassword) where user=root;

mysql> flush privileges;

mysql> quit

# mysql -uroot -p

enter password:

mysql>

方法三:

这种方法我没有进行过测试,因为我的root用户默认密码已经被我修改过了,那位有空测试一下,把结果告诉我,谢谢!!

# mysql -uroot -p

enter password:

方法四:

方法如下: 1, 关闭mysql服务 /etc/init.d/mysqld stop 2,使用 –skip-grant-tables选项启动mysql服务,可以修 改/etc/inin.d/mysqld脚本启动位置增加此选项, vi /etc/init.d/mysqld

方法如下:

1, 关闭mysql服务

/etc/init.d/mysqld stop

2,使用 –skip-grant-tables选项启动mysql服务,可以修 改/etc/inin.d/mysqld脚本启动位置增加此选项,

vi /etc/init.d/mysqld

在下面运行启动的语句里增加--skip-grant-tables

/usr/bin/mysqld_safe --skip-grant-tables --datadir="$datadir" --socket="$socketfile"

--log-error="$errlogfile" --pid-file="$mypidfile"

加入--skip-grant-tables的意思是启动mysql服务的时候跳 过权限表认证。启动后,连接到mysql的root不需要口令

3,重新启动mysql服务

/etc/init.d/mysqld start

4. 修改root用户的密码;

mysql> update mysql.user set password=password(123456) where user=root;

mysql> flush privileges;

mysql> quit

5. 重新启动mysql,就可以使用 新密码登录了。

mysql

mysql -u root –p

输入密码:123456

6,关闭mysql服务

/etc/init.d/mysqld stop

7, 重新修改第2步修改的/etc/init.d/mysqld,使其保持原来不变,也就是取消--skip-grant-tables语句

8,重新 启动mysql服务

/etc/init.d/mysqld start

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