Can't connect to external database with Codeigntier - mysql

Question

I want Codeigntier to connect to a MySQL database on another server (not localhost). How do I configure this in the config/database.php file?
I set the hostname to the ip address with the proper username/password but it's not working.
The error I get says:
A Database Error Occurred: Unable to connect to your database server using the provided settings.

Answer 1

Heru, it seems like you simply want to change the current DB configuration from localhost to your live server. Do this, open up your database.php file in the application/config folder. Then find these lines.
$db['default']['hostname'] = 'localhost';
$db['default']['username'] = 'root';
$db['default']['password'] = ''; // might be empty or might be full
$db['default']['database'] = 'your_database';
and change it to this . . .
$db['default']['hostname'] = 'your_host_name';
$db['default']['username'] = 'your_user_name';
$db['default']['password'] = 'your_password';
$db['default']['database'] = 'your_new_database';
depending if your on a shared host or not and other factors. Your host may provide you with a new host name , may require a password and may provide you with a pre-configured database name. Look into the host provider for these pieces of information.
if that doesn't work . . .
You could also try to change it to this which finds your servers IP and converts it to a named address, but your database may or may not be sitting on a different address. But it's worth a shot.
$hostIP = $_SERVER['SERVER_ADDR'];
(string)$hostname = gethostbyaddr($hostIP);
$db['default']['hostname'] = $hostname;
$db['default']['username'] = 'your_user_name';
$db['default']['password'] = 'your_password';
$db['default']['database'] = 'your_new_database';
also if your confident of your database IP, change the above
(string)$hostname = gethostbyaddr($hostIP)
to
(string)$hostname = gethostbyaddr('10.11.12.123'); // with your IP #

Answer 2

This strikes me as a database permissions issue, not a CI issue. You're probably not authorized to connect from your IP. What happens when you run this on some random PHP page:
mysql_connect($server, $un, $pw) or die( mysql_error());
To fix this, simply run:
GRANT SELECT, DELETE, UPATE, INSERT ON $dbname.% TO $un#% IDENTIFIED BY ('$pw')

Answer 3

Triq,
You can add another set of database config to your config/database.php file (on top of your default set) like the following (you can change dbwrite to other name that you like):
$db['dbwrite']['hostname'] = "[other db host]";
$db['dbwrite']['username'] = "[other db username]";
$db['dbwrite']['password'] = "[other db password]";
$db['dbwrite']['database'] = "[other db name]";
$db['dbwrite']['dbdriver'] = "mysql";
$db['dbwrite']['dbprefix'] = "";
$db['dbwrite']['pconnect'] = FALSE;
$db['dbwrite']['db_debug'] = FALSE;
$db['dbwrite']['cache_on'] = FALSE;
$db['dbwrite']['cachedir'] = "";
$db['dbwrite']['char_set'] = "utf8";
$db['dbwrite']['dbcollat'] = "utf8_general_ci";
Then, you can pull this db reference using the following code:
$dbw = $this->load->database('dbwrite',TRUE);
$dbw->query(xxx); // this will execute the query on the other db
Make sure dbwrite is the same name that you are using on your other db config. $this refers to $CI instance.

Answer 4

You can easily Crated multiple database connection using codeigniter
$db['default']['hostname'] = "localhost:3306";
$db['default']['username'] = "root";
$db['default']['password'] = "";
$db['default']['database'] = "buy599_erp";
$db['default']['dbdriver'] = "mysql";
$db['default']['dbprefix'] = "";
$db['default']['pconnect'] = TRUE;
$db['default']['db_debug'] = TRU`enter code here`E;
$db['default']['cache_on'] = FALSE;
$db['default']['cachedir'] = "";
$db['default']['char_set'] = "utf8";
$db['default']['dbcollat'] = "utf8_general_ci";
$db['magento6']['hostname'] = "localhost:3306";
$db['magento6']['username'] = "root";
$db['magento6']['password'] = "";
$db['magento6']['database'] = "magento6";
$db['magento6']['dbdriver'] = "mysql";
$db['magento6']['dbprefix'] = "";
$db['magento6']['pconnect'] = TRUE;
$db['magento6']['db_debug'] = TRUE;
$db['magento6']['cache_on'] = FALSE;
$db['magento6']['cachedir'] = "";
$db['magento6']['char_set'] = "utf8";
$db['magento6']['dbcollat'] = "utf8_general_ci";
$db['magento6stalkbuylove']['hostname'] = "localhost:3306";
$db['magento6stalkbuylove']['username'] = "root";
$db['magento6stalkbuylove']['password'] = "";
$db['magento6stalkbuylove']['database'] = "magento6stalkbuylove";
$db['magento6stalkbuylove']['dbdriver'] = "mysql";
$db['magento6stalkbuylove']['dbprefix'] = "";
$db['magento6stalkbuylove']['pconnect'] = TRUE;
$db['magento6stalkbuylove']['db_debug'] = TRUE;
$db['magento6stalkbuylove']['cache_on'] = FALSE;
$db['magento6stalkbuylove']['cachedir'] = "";
$db['magento6stalkbuylove']['char_set'] = "utf8";
$db['magento6stalkbuylove']['dbcollat'] = "utf8_general_ci";