Manual:CommonSettings.php

CommonSettings.php can be used instead of LocalSettings.php on wiki farms. The Wikimedia Foundation uses a version of CommonSettings.php.

Possible setup
$wgConf may prove to be useful on such a configuration file.
 * 1) Create a CommonSettings.php file with all relevant common settings.
 * 2) In all of the affected wikis' LocalSettings.php's, add:

External link

 * Wikimedia's CommonSettings.php