CiviCRM Community Forums (archive)

One is the install I use to test modules the other is the live drupal.

Thanks

This Q was also an issue for me.
CiviCRM's contacts, events, member, ... should be the same in both domains: Shared codebase + content + contacts and as part of the contacts: different drupal users (user setup by admin).
I did a test the last week (and had no problems) and I found some documentation:
http://wiki.civicrm.org/confluence/display/CRMDOC/CiviCRM+for+Drupal+-+Configure+Multi-site+Installations.

I made a setup with 1 db with 2 drupal domains:
For both domains the civicrm.settings.php:
- 2 different drupal db
- 1 civicrm db
- I pointed to the same compiledir: 1 compile dir

In CiviCRM: setup the upload directories and base url's in 1 domain (for each domain the same), so there is 1 'main' url and 1 upload directory for both domains.

I did not test (yet) synchronising drupal users (uf_match table) and did not make a different domain ID in civicrm.settings.php. The only risk there is (??) that a user has different email adresses in his user accounts and therefore civicrm makes 2 contacts for 1 person.  In my case it's an admin's setup, so when making a users he/she has to check the contacts database.