MySQL忘记root密码后的处理

在用root用户登录mysql时发现密码错了

[root@gk ~]# mysql -u root -p

Enter password:

ERROR 1045 (28000): Access denied for user
'root'@'localhost' (using password: NO)

解决方法

1.停止mysqld服务

[root@gk ~]# service mysqld stop

停止 mysqld：                                                                                            [确定]

2.执行mysqld_safe --skip-grant-tables

 

[root@gk ~]# mysqld_safe --skip-grant-tables

140607 22:21:50 mysqld_safe Logging to '/var/log/mysqld.log'.

140607 22:21:50 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql

3.登录mysql

 

[root@gk ~]# mysql

Welcome to the MySQL monitor.  Commands end with ; or \g.

Your MySQL connection id is 1

Server version: 5.1.71 Source distribution

Copyright (c) 2000, 2013, 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.

 

4.切换到mysql数据库

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

5.更新密码

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

Query OK, 2 rows affected (0.00 sec)

Rows matched: 3  Changed: 2  Warnings: 0

mysql> flush privileges;

Query OK, 0 rows affected (0.00 sec)

mysql> exit

Bye

 

6.重新启动mysqld服务

[root@gk ~]# service mysqld restart

停止 mysqld：                                              [确定]

正在启动 mysqld：                                          [确定]

7.用新密码进行登录

 

[root@gk ~]# mysql -u root -p

Enter password:

Welcome to the MySQL monitor.  Commands end with ; or \g.

Your MySQL connection id is 2

Server version: 5.1.71 Source distribution

Copyright (c) 2000, 2013, 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.

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