mysql密码配置

mysql-server数据库版本：8.0.11（ubuntu 18.04)

mysql-community-server-dbgsym_8.0.11-1ubuntu18.04_amd64.deb

查看密码策略：

SHOW VARIABLES LIKE 'validate_password%';

修改策略值

set global validate_password.policy='LOW';

取消root用户免密登录：

ALTER USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY 'Aa123456';