centos mysql数据库忘记密码修改

1.vim /etc/my.cnf

2.在[mysqld]中添加

skip-grant-tables

例如：

[mysqld]
skip-grant-tables
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock

3.重启mysql

service mysql restart

4.用户无密码登录

mysql -uroot -p (直接点击回车，密码为空)

5.选择数据库

use mysql;

6、ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '123';

提示ERROR 1396 (HY000): Operation ALTER USER failed for 'root'@'localhost'

mysql> select user,host from user;

7、注意我的root，host是'%'

ALTER USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY '123';

8、退出 service mysqld restart