例如，你想root使用123456从任何主机连接到mysql数据库的话。
mysql> GRANT ALL PRIVILEGES ON *.* TO ‘root‘@‘%‘ IDENTIFIED BY ‘123456‘ WITH GRANT OPTION;
Query OK, 0 rows affected (0.00 sec)
mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.03 sec)
sql 1130 is not allowed to connect to this MySQL,布布扣,bubuko.com
sql 1130 is not allowed to connect to this MySQL
原文：http://my.oschina.net/fusxian/blog/300536