use mysql; select user,host from user; update user set host = '%' where user = 'root'
%是通配符,host标识是设置允许访问的ip地址
例如:
* host=localhost:只允许本机访问
* host=169.254.18.%:只允许169.254.18.网段的可以访问
* host=%:允许所有ip地址访问