Django Webfaction 'Timeout when reading response headers from daemon process'

Question

My Django app on my production server hosted on Webfaction was working fine until I just tried to restart it after pushing a change to the settings.py file. I ran

Answer 1

Python C extension modules, like numpy, are known to cause timeouts when used under mod_wsgi. There's a clear explanation of the problem (direct from the author of mod_wsgi) available at https://serverfault.com/a/514251/109598

If that sounds like it might be the cause of your problem, then the solution is probably simple - add the following to your httpd.conf:

WSGIApplicationGroup %{GLOBAL}

Be sure to restart your Apache instance after making that change.