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CentOS系统重置MySQL数据库密码

学习CentOS Linux的时候经常会忘记各种密码,本文主要说明在使用CentOS的过程中,忘记MySQL数据库密码的解决办法。
第一步:通过如下代码,停止MySQL服务器的运行

[sql]
[root@CentOs5 ~]# service mysqld stop
Stopping MySQL:                                            [  OK  ]
[/sql]

第二步:使用 “–skip-grant-tables”参数重新启动mysql

[sql]
[root@CentOs5 ~]# mysqld_safe –skip-grant-tables &
[1] 23810
[root@CentOs5 ~]# Starting mysqld daemon with databases from /var/lib/mysql
[/sql]

第三步:用帐号登录MySQL

[sql]
[root@CentOs5 ~]# mysql -u root
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.0.77 Source distribution
Type ‘help;’ or ‘\h’ for help. Type ‘\c’ to clear the buffer.
[/sql]

第四步:改变用户数据库表

[sql]
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
[/sql]

第五步:修改密码,记得密码要用password()函数进行加密,一定不要忘记!不然,

[sql]
mysql> update user set password=password(‘admin123′) where user=’root’;
Query OK, 1 row affected (0.04 sec)
Rows matched: 1  Changed: 1  Warnings: 0
[/sql]

第六步:刷新权限表

[sql]
mysql> flush previleges;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ‘previleges’ at line 1
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
[/sql]

第七步:退出mysql

[sql]
mysql> quit
Bye
[/sql]

第八步:对mysql进行重启

[sql]
[root@CentOs5 ~]# service mysqld restart;
STOPPING server from pid file /var/run/mysqld/mysqld.pid
100421 13:44:03  mysqld ended
Stopping MySQL:                                            [  OK  ]
Starting MySQL:                                            [  OK  ]
[1]+  Done                    mysqld_safe –skip-grant-tables
[/sql]

第九步:用更改过的密码重新登录即可。

[sql]
[root@CentOs5 ~]# mysql -u root -p
Enter password: admin123
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.0.77 Source distribution
Type ‘help;’ or ‘\h’ for help. Type ‘\c’ to clear the buffer.
mysql> quit
Bye
[root@CentOs5 ~]#

[/sql]

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