现象
忘记mysql的root用户登录密码，登录失败。
原因
mysql的root密码人为丢失。
解决方法
1．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。
2．重新启动mysqld
# /etc/init.d/mysql restart
stopping mysql: [ ok ]
starting mysql: [ ok ]
3．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
4．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。
5．重新启动mysqld
# /etc/init.d/mysql restart
stopping mysql: [ ok ]
starting mysql: [ ok ]
|
