Development / MusicBrainz Server Environment Variables

This page has not been reviewed by our documentation team (more info).

Environment variables

The musicbrainz server understands the following environment variables, these may be useful during development:


This is the catalyst debug output, it is enabled by default. You can set it to "0" if you're not interested in this data.


Set this to "1" to print sql queries on the console (including query times).


Set this to "1" when you want to run the server against the test database, this is typically used to debug selenium tests:

 $ script/ ; MUSICBRAINZ_USE_TEST_DATABASE=1 script/ -r