方法一、

本地登入mysql，更改 "mysql" 数据库里的 "user" 表里的 "host" 项，将"localhost"改为"%"

#mysql -u root -proot

mysql>use mysql;

mysql>update user set host = '%' where user = 'root';

mysql>select host, user from user;

mysql>flush privileges;

方法二、直接授权(推荐)

从任何主机上使用root用户，密码：youpassword（你的root密码）连接到mysql服务器：

# mysql -u root -p

mysql>GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'youpassword' WITH GRANT OPTION;

mysql>flush privileges;