xshell中数据库忘记密码后重新设置密码的解决办法！

灰太狼 2023-03-01 08:37 37阅读 0赞

# 数据库忘记密码后重新设置： #

### 1.修改主配置文件，添加 skip-grant-tables，跳过授权表 ###

vim /etc/my.cnf

[root@zhai ~]# vim /etc/my.cnf

\[mysqld\]  
skip-grant-tables  
如下图  
![在这里插入图片描述][20200722222212611.PNG]

### 2.重启mysqld ###

systemctl restart mysqld

[root@zhai ~]# systemctl restart mysqld

### 3.无需输入密码进入mysql，执行修改密码的命令，刷新并退出 ###

mysql -u root -p

直接回车进入数据库，无需输入密码  
mysql> use mysql;  
mysql> update user set authentication\_string=password(“123456”) where User=“root”;  
mysql> flush privileges;  
mysql> quit;

[root@zhai ~]# mysql -u root -p
    Enter password: 
    Welcome to the MySQL monitor.  Commands end with ; or \g.
    Your MySQL connection id is 3
    Server version: 5.7.17 MySQL Community Server (GPL)
    
    Copyright (c) 2000, 2016, 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.
    
    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 authentication_string=password("123456") where User="root";
    Query OK, 1 row affected, 1 warning (0.00 sec)
    Rows matched: 1  Changed: 1  Warnings: 1
    
    mysql> flush privileges;
    Query OK, 0 rows affected (0.00 sec)
    
    mysql> quit;
    Bye

### 4.恢复主配置文件，即进入 vim /etc/my.cnf，然后把skip-grant-tables注释掉，最后重启mysqld ###

systemctl restart mysqld
    ![在这里插入图片描述](https://img-blog.csdnimg.cn/20200722223022258.PNG)

[root@zhai ~]# systemctl restart mysqld
    [root@zhai ~]# vim /etc/my.cnf
    [root@zhai ~]# mysql -u root -p
    Enter password: 
    Welcome to the MySQL monitor.  Commands end with ; or \g.
    Your MySQL connection id is 3
    Server version: 5.7.17 MySQL Community Server (GPL)
    
    Copyright (c) 2000, 2016, 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.

[20200722222212611.PNG]: /images/20230209/a444fc026abc47e69cd493cbbad9204d.png