Is it possible to install more than one wiki (MediaWiki) on a server? How?
Yes, MediaWiki can be installed multiple times in different directories using either the same database with a different set of table prefixes (configurable upon install) or using different databases altogether. Additionally, you may want to make some settings common for all the installations, and have a central place where changes to these can be made. Since the configuration file (LocalSettings.php) is executed as PHP code, this can be done with PHP’s inclusion mechanism – for instance, by adding the line include_once(“../CommonSettings.php”) in each LocalSettings.php, and placing settings which apply to all wikis in ../CommonSettings.php. If you have a large number of wikis on one host, you may not want to keep a separate copy of the source code for every one. Instead, extract the source somewhere, and for each wiki installation, symlink the entire MediaWiki directory with the sole exception of the LocalSettings.php file.