mysql 不能远程连接

dos下mysql远程连接：

mysql -h 远程主机ip -u 用户名 -p

远程不能访问解决方法：

错误如下：

ERROR 1130 (HY000): Host '192.168.1.76' is not allowed to connect to this MySQL
server

方案一：

[root@lyd php-5.2.17]# mysql -u root -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 13
Server version: 5.5.29-log MySQL Community Server (GPL)

Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> use mysql
Database changed
mysql> update user set host='%' where user='root';
ERROR 1062 (23000): Duplicate entry '%-root' for key 'PRIMARY'

mysql> select host,user from user;
+-----------------+------+
| host            | user |
+-----------------+------+
| %               | root |
| 127.0.0.1       | root |
| ::1             | root |
| localhost       |      |
| lyd.localdomain |      |
| lyd.localdomain | root |
+-----------------+------+
6 rows in set (0.00 sec)

mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)

方案二：

GRANT ALL PRIVILEGES ON *.*  TO root@"%"  WITH GRANT OPTION;

FLUSH PRIVILEGES