忘记MySQL密码如何进行修改

在日常使用MySQL数据库时如果出现忘记密码无法登录的情况，总不能选择重新去安装MySQL的方式设置密码吧，

重置密码的步骤

第一步更改MySQL的配置文件，写入一条配置

编辑/etc/my.cnf

[mysqld]
skip-grant-tables

第二步重启mysqld

systemctl restart mysqld

第三步直接登录MySQL数据库

使用 msyql -uroot 直接登录

[root@server1 ~]# mysql -uroot
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.7.30-log Source distribution

Copyright (c) 2000, 2020, 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> 

第四步更改密码

进入MySQL后，使用msql库，再进行密码更改
使用库use mysql
更新密码：update mysql.user set authentication_string=password('root_password') where user='root'; root_password就是你自定义的密码

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 mysql.user set authentication_string=password('root_password') where user='root';
Query OK, 1 row affected, 1 warning (0.00 sec)
Rows matched: 1  Changed: 1  Warnings: 1

第五步设置完密码退出，在配置文件删除之前写入的参数，重启mysqld

vim /etc/my.cnf

systemctl restart mysqld

第六步使用新密码登录

mysql -uroot -p******