centos 下重置mysql密码

1.修改配置文件

1.修改配置文件

--- vim /etc/f

在 [mysqld] 的段中加上一句：skip-grant-tables

2.重启mysql

--- systemctl restart mysqld

3.修改密码

--- use mysql;

--- update user set authentication_string=password('new password') where user = 'root';

退出，再次进入

4.设置密码

--- use mysql;

--- set global validate_password_policy=0;

--- set global validate_password_length=1;

--- alter user 'root'@'localhost' identified by 'new password';

退出，

5.还原配置文件

--- vim /etc/f

注释掉原本的：skip-grant-tables