MySQL root密码找回
(8.0以下)
1.用命令编辑/etc/my.cnf配置文件 即:vim /etc/my.cnf 或者 vi /etc/my.cnf
2.在[mysqld]下添加skip-grant-tables,然后保存并退出
4.更改root用户名 重启以后,执行mysql命令进入mysql命令行
5.修改root用户密码
update mysql.user set authentication_string=password('root') where user='root'; --5.7版本
flush privileges;
6.把/etc/my.cnf中的skip-grant-tables注释掉,然后重启mysql 即:service mysqld restart
好了,下面就可以用root新的密码登录了!
二、Mysql root用户密码忘记(8.0及以上)
在mysql8系统下,适用如下方法(全路径)
G:\mysql-8.0.23-winx64\bin\mysqld --datadir=G:\mysql-8.0.23-winx64\data80323308 --console --skip-grant-tables --shared-memory

然后再开一个窗口,执行下面命令
cd G:\mysql-8.0.23-winx64\bin

mysql> select user,host,authentication_string from mysql.user;
mysql> delete from mysql.user where user='root' ;
mysql> flush privileges; --记得刷新哈,如果提示无法创建
mysql> create user root@'%' identified with mysql_native_password by 'root';
mysql> grant all on *.* to root@'%' with grant option;
mysql> flush privileges;
mysql> drop user 'root'@'localhost';
mysql> flush privileges;
mysql> create user root@'localhost' identified with mysql_native_password by 'root';
mysql> grant all on *.* to root@'localhost' with grant option;
mysql> flush privileges;


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