php - Connect to mysql on a different server

Question

Im trying to connect to mysql database server from another server. The following are configurations on both servers.

Server 1: I installed xampp with php and apache services and it has the following ip 172.x1.x1.x1

Server 2: I installed mysql and it has the following ip 172.x1.x1.x2.

the following is the connection script I am using to connect to the database

<?php
    //Database connection constants
    define("DATABASE_HOST", "172.x1.x1.x2");
    define("DATABASE_USERNAME", "root");
    define("DATABASE_PASSWORD", "");
    define("DATABASE_NAME", "management");
?>

The above script is in a file called app_config.php and its located in server 1 The following script is in a file called connect.php and its also located in server 1

<?php
require 'app_config.php';
$connect_error = 'Sorry we'experiencing connection problems.';
$table_error = 'Table not found';
mysql_connect(DATABASE_HOST, DATABASE_USERNAME, DATABASE_PASSWORD)
or die($connect_error);

mysql_select_db(DATABASE_NAME) or die($table_error); ?> now when I try to connect I get the following error

Warning: mysql_connect() [function.mysql-connect]: Host 'hr1.saqa.co.za' is not allowed to connect to this MySQL server in C:xampphtdocsscriptsfunctionsdatabaseconnect.php on line 4

Fatal error: Call to undefined function handle_error() in C:xampphtdocsscriptsfunctionsdatabaseconnect.php on line 5

It will be awsome if you can help me guys.

Answer 1

Since your database server is different from your php/apache server you need to specify the hostname as 172.x1.x1.x2 in mysql-php connection string.

Also make sure that mysql user root have remote connection permission. Other wise mysql-server will not allow your root user to login remotely. i.e. from your server1.

You can make sure that from mysql.user table.

mysql> select Host,User from user where User = "root";
+------------+------+
| Host       | User |
+------------+------+
| 127.0.0.1  | root |
| ::1        | root |
| localhost  | root |
| sgeorge-mn | root |
| %          | root |
+------------+------+
4 rows in set (0.01 sec)

% means any host.

To create a user with remote connection permission, use following mysql query:

mysql> CREATE USER 'root'@'%' IDENTIFIED BY 'your_password';