Last updated December 27, 2010. Created by Gratsiela on December 12, 2008.
Edited by arianek, LeeHunter. Log in to edit this page.
The following pages cover some special installation cases, such as running several Drupal sites from a single code base (also known as multi-site installations) and specifying a database table prefix.
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Helpful Background Info
For those new to this I've written up a post explaining the background concepts behind multi-site Drupal installs at http://mikehigginbottom.com/content/drupal-multi-site-installations-magic-secret-bits. It has some specifics but focuses on the stuff you need to understand rather than the steps you need to take.
$drupal_hash_salt
Within the settings.php file, there is a $drupal_hash_salt and accompanying authentication code. When I setup a multi-site implementation, with a unique database for each supported site, does this authentication code need to change or do I use the same code for all sites working off of my common code base? If it does need to change, what is the source of the authentication code? Does that come from my hosting company?