bitscn.comhttp://zhidao.baidu.com/question/39198255.html
可以进行如下的步骤重新设置mysql的root密码:
1.首先确认服务器出于安全的状态,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/mysql/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-name-resolve
skip-grant-tables
保存并且退出vi。
3.重新启动mysqld
# service mysql restart
stopping mysql: [ ok ]
starting mysql: [ ok ]
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’ ;
mysql> update user set password = password ( ‘wtm98077’ ) 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
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 ]
下面这行代码也可以在正常在正常情况下更改密码,但要在重启mysql服务后才生效
mysql> update user set password = password ( ‘new-password’ ) where user = ‘root’ ;
bitscn.com