密码修改
原理更新 mysql.user 表的密码字段
5.1 密码字段password
5.7 密码字段authentication_string
update user set authentication_string=password('123') where user='root';
刷新权限
flush privileges;
任何IP访问
grant all privileges on *.* to 'root'@'%' identified by 'rootroot' with grant option;