解決遠程連接數據庫：Host is not allowed to connect to this MySQL server

遠程連接數據時，報以下提示：

Host 'web1' is not allowed to connect to this MySQL server

原因是數據庫服務不允許遠程登錄，沒有授權導致，解決方法如下：

登陸mysql數據庫：

mysql –uroot –p123456

創建並授權一個專用的數據庫wordpress用於存放blog數據：

create database wordpress;

show database like ‘wordpress’;

grant all on worpress.* to worpress@'localhost' identified by '123456';

注：當數據庫和php服務不在同一台機器上，可執行如下命令授權

grant all on wordpress.* to wordpress@’192.168.0.%’ identified by ‘123456’;

刷新權限，使得創建的用戶生效：

flush privileges;   

查看用戶對應的權限：

select user,host from mysql.user where user='wordpress';  

[root@mysql ~]# mysql -uroot -p123456
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.5.32 MySQL Community Server (GPL)

Copyright (c) 2000, 2013, 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> create database wordpress;
Query OK, 1 row affected (0.00 sec)
mysql> grant all on wordpress.* to wordpress@'192.168.0.%' identified by '123456';
Query OK, 0 rows affected (0.00 sec)

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

mysql> select user,host from mysql.user where user='wordpress';
+-----------+-------------+
| user      | host        |
+-----------+-------------+
| wordpress | 192.168.0.% |
+-----------+-------------+
1 row in set (0.00 sec)

測試效果：