Configure mod_wsgi on Mac OS X? - django

Question

I have been trying to configure mod_wsgi for two days and still no luck. Here is what I did:
Create a sample django project mysite. Run python manage.py runserver and make sure it's working
Create apache directory under mysite, create apache_django_wsgi.conf, mysite.wsgi and an empty __init__.py
Content of apache_django_wsgi.conf:
WSGIPythonHome /usr/bin
WSGIRestrictStdout Off
WSGIDaemonProcess django
WSGIProcessGroup django
Alias /site_media/ "/Users/Garth/Dev/web-app/mysite/media/"
<Directory "/Users/Garth/Dev/web-app/mysite/media">
Order allow,deny
Options Indexes
Allow from all
IndexOptions FancyIndexing
</Directory>
Alias /media/ "/Library/Python/2.6/site-packages/django/contrib/admin/media/"
<Directory "/Library/Python/2.6/site-packages/django/contrib/admin/media">
Order allow,deny
Options Indexes
Allow from all
IndexOptions FancyIndexing
</Directory>
WSGIScriptAlias /mysite "/Users/Garth/Dev/web-app/mysite/apache/mysite.wsgi"
<Directory "/Users/Garth/Dev/web-app/mysite/apache">
Allow from all
</Directory>
Content of mysite.wsgi
import os
import sys
sys.path.append('/Users/Garth/Dev/web-app/mysite')
sys.path.append('/Users/Garth/Dev/web-app')
os.environ['DJANGO_SETTINGS_MODULE'] = 'mysite.settings'
import django.core.handlers.wsgi
application = django.core.handlers.wsgi.WSGIHandler()
Download mod_wsgi.so (precompiled binary for Mac OS X) and put it in /usr/libexec/apache2
Edit /etc/apache2/httpd.conf,
add:
LoadModule wsgi_module libexec/apache2/mod_wsgi.so
Include /Users/Garth/Dev/web-app/mysite/apache/apache_django_wsgi.conf
Run sudo apachectl -k start
If I go to localhost, I can see the files and directories list. But if I go to localhost/mysite (which is the WSGIScriptAlias I configured), I got Internal Server Error.
The error_log of apache is:
[Fri May 13 11:10:38 2011] [warn] Init: Session Cache is not configured [hint: SSLSessionCache]
[Fri May 13 11:10:38 2011] [notice] Digest: generating secret for digest authentication ...
[Fri May 13 11:10:38 2011] [notice] Digest: done
[Fri May 13 11:10:38 2011] [notice] Apache/2.2.17 (Unix) mod_ssl/2.2.17 OpenSSL/0.9.8l DAV/2 mod_wsgi/3.3 Python/2.6.1 configured -- resuming normal operations
[Fri May 13 11:10:50 2011] [error] [client ::1] mod_wsgi (pid=10921): Target WSGI script '/Users/Garth/Dev/web-app/mysite/apache/mysite.wsgi' cannot be loaded as Python module.
[Fri May 13 11:10:50 2011] [error] [client ::1] mod_wsgi (pid=10921): Exception occurred processing WSGI script '/Users/Garth/Dev/web-app/mysite/apache/mysite.wsgi'.
[Fri May 13 11:10:50 2011] [error] Traceback (most recent call last):
[Fri May 13 11:10:50 2011] [error] File "/Users/Garth/Dev/web-app/mysite/apache/mysite.wsgi", line 1, in <module>
[Fri May 13 11:10:50 2011] [error] import os
[Fri May 13 11:10:50 2011] [error] ImportError: No module named os
Does anyone see where goes wrong? The error_log seems to tell a lot. I'm new to web development, and I might have made some obvious mistakes. Thank you very much!

Answer 1

Don't set WSGIPythonHome for a start it isn't needed. It should only be needed in certain situations and this isn't one of them.
In this case you have set it to a wrong value. By rights the fact it is wrong shouldn't have caused a problem as Python should have fallen back to using correct default value, but it may not do that for some reason.
You can also delete the line:
WSGIRestrictStdout Off
as that isn't needed for mod_wsgi 3.3.