【原文链接】
文章目录
1 停止mysql服务
linux上通过如下命令停止mysql服务
systemctl stop mysqld
Windows通过【计算机】-右键-【管理】-【服务和应用程序】-【服务】，然后找到【MySQL5.7】，在上面右键-停止即可
2 修改配置跳过认证
编辑配置文件，windows系统为my.ini，linux系统为my.cnf，然后在mysqld下面增加如下内容
[mysqld]
skip-grant-tables
3 启动mysql服务
linux系统执行如下命令
systemctl start mysqld
Windows通过【计算机】-右键-【管理】-【服务和应用程序】-【服务】，然后找到【MySQL5.7】，在上面右键-启动即可
4 使用空密码登录root用户
此时使用root用户登录不需要密码了，如下
C:\Users\Administrator>mysql -uroot -P13306
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.7.37-log MySQL Community Server (GPL)
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.
mysql>
4 重置root新密码
use mysql;
update user set authentication_string=password('新密码') where user='root';
flush privileges;
如下：
mysql> use mysql;
Database changed
mysql> update user set authentication_string=password("xxxxxxxxx") 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 (0.01 sec)
mysql
5 参照步骤1再次停止mysql服务
6 修改pei配置文件，将步骤2中配置的skip-grant-tables去掉
7 参照步骤3再次启动mysql服务
8 使用重置后密码登录
如下，使用新密码已经可以正常登录root用户了
C:\Users\Administrator>mysql -uroot -P13306 -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 MySQL Community Server (GPL)
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.
mysql>