centos8下mysql创建新用户

1、进入docker下mysql

　　docker exec -it 容器ID /bin/bash

　　mysql -uroot -p

2、修改用户密码

　　UPDATE user SET password = PASSWORD('newpassword') where USER='root'; // password ==> authentication_string

　　flush privileges;

3、创建新用户

　　CREATE USER ‘test’@’%’ IDENTIFIED BY ‘123456’;

或者

　　insert into user(host,user,authentication_string) values('%','test',password('123456'));

4、授权

　　grant all on *.* to 'test'@'%' identified by '123456' with grant option; // 授所有权限

　　flush privileges;

　　SHOW GRANTS FOR 'test'@'%'; // 查看授权

 　　revoke all on user.* from 'test'@'%'; 

5、删除用户

　　delete from user where user=’test’ and host=’%’;