在linux设置Mysql允许用户远程登录和限制用户远程登录

允许用户远程登录：

use mysql;update user set host = '%' where user = 'root';select host, user from user;flush privileges;

限制用户远程登录：

use mysql;update user set host = 'localhost' where user = 'root';select host, user from user;flush privileges;