msyql 禁止远程访问

1. use mysql
2. select host , user from user; 查看用户 与 对应的host
3. 将 host 中是 %的改为 localhost， 酌情也可以其他用户 的host限制为localhost
update user set host = "localhost" where user = "root" and host = "%"
4. 重启mysql