linux下mysql忘记密码的解决方法

有时候我们忘记了mysql的root密码，很多操作都无法实现。但是只要可以登录上服务器，都是有办法解决的。

1.停止mysql

可以使用 service mysql stop 来停止

[root@huawei_server /]# service mysql stop
Redirecting to /bin/systemctl stop mysql.service
[root@huawei_server /]# 

不同的安装方式，停止方式可能不一样。其他还有很多办法，直接kill -9杀掉进程都行

2.直接免密码登录mysql,让输入密码的时候直接按回车即可

[root@huawei_server bin]# mysql  -uroot  -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.7.37-log Source distribution

Copyright (c) 2000, 2022, Oracle and/or its affiliates.

 

 

 

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.

 

3.修改密码，退出

 

mysql> use mysql
Database changed
mysql> update mysql.user set authentication_string=password('root123456789') where user='root';
Query OK, 1 row affected, 1 warning (0.05 sec)
Rows matched: 1  Changed: 1  Warnings: 1

 

mysql> exit
Bye

4.重启mysql,即可使用新设置的密码登录

[root@huawei_server bin]# service mysql start
Redirecting to /bin/systemctl start mysql.service
[root@huawei_server bin]#