解决远程连接数据库：Host is not allowed to connect to this MySQL server

Posted 2020-11-10 南清风

远程连接数据时，报以下提示：

Host \'web1\' is not allowed to connect to this mysql server

原因是数据库服务不允许远程登录，没有授权导致，解决方法如下：

登陆mysql数据库：

mysql –uroot –p123456

创建并授权一个专用的数据库wordpress用于存放blog数据：

create database wordpress;

show database like ‘wordpress’;

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

注：当数据库和php服务不在同一台机器上，可执行如下命令授权

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

刷新权限，使得创建的用户生效：

flush privileges;   

查看用户对应的权限：

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)

测试效果：