Django mod_wsgi: Exception occurred processing wsgi script

I have a checklist in these kind of scenarios:

1. Execute a script testing the index.wsgi interface directly with python, correct errors until the output shows that all is ok. (see update)

2. Check for permissions.

3. Check for apache configuration.

Update:

Executing python my_project/index.wsgi directly shows nothing in console, this approach works on fcgi configuration but no in wsgi, you will need a script that create a test server and show posible errors on console, the example script is this:

test_server.py

#!/usr/bin/env python

from wsgiref.util import setup_testing_defaults
from wsgiref.simple_server import make_server
from my_project.index import application #importing the project's index.wsgi file
httpd = make_server('', 8000, application)
httpd.serve_forever()

Steps:

• Run the test in console (even local)
• Go to the browser and navigate to this server:port
• see the logs in console

Recommendations:

1. Check for you __init__.py either in the project folder and the settings folder

2. Try to use relative paths in the settings and in the .wsgi file (see example)

3. Verify the uppercase/lowecase in your names (probably changing "MY_PROJECT.settings" for "my_project.settings"

example:

import os, sys, site

CURRENT_DIRECTORY = os.path.dirname(os.path.realpath(__file__))
WORK_DIRECTORY = os.path.join(CURRENT_DIRECTORY, '..')

#Add the site-packages
site.addsitedir('/home/SERVER_USERNAME/.virtualenvs/histology_env/lib/python2.6/site-packages')

#activate_env=os.path.expanduser("~/.virtualenvs/histology_env/bin/activate_this.py")
#execfile(activate_env, dict(__file__=activate_env))

#adding the project to the python path
sys.path.append(WORK_DIRECTORY)
#adding the parent directory to the python path
sys.path.append(os.path.join(WORK_DIRECTORY, '..'))

os.environ.setdefault("DJANGO_SETTINGS_MODULE", "my_project.settings")

from django.core.wsgi import get_wsgi_application
application = get_wsgi_application()

I had this same thing happen to me a few days ago. I was reading all about it but this is how I finally fixed it all.

1. Your django wsgi file should be a python file (wsgi.py), not an index file (index.wsgi). This is what mine looked like, obviously replace usernames and folders.

   import os, sys, site
   
   #Add the site-packages
   site.addsitedir('/home/SERVER_USERNAME/.virtualenvs/histology_env/lib/python2.6/site-packages')
   
   
   #activate_env=os.path.expanduser("~/.virtualenvs/histology_env/bin/activate_this.py")
   #execfile(activate_env, dict(__file__=activate_env))
   
   sys.path.append('/opt/')
   sys.path.append('/opt/MY_PROJECT')
   sys.path.append('/opt/MY_PROJECT/MY_PROJECT')
   os.environ.setdefault("DJANGO_SETTINGS_MODULE", "MY_PROJECT.settings")
   
   from django.core.wsgi import get_wsgi_application
   application = get_wsgi_application()
   

2. DON"T ADD THE PROJECT TO THE /var/www/html/ FOLDER! I didn't realize that was a problem until where I got to you are. I chose to put it into the /opt/ directory.

3. You don't need to activate the env to get this to work. You add the packages in the first line. This is why I have it commented out in mine (site works fine).

4. In the virtual configuration

   NameVirtualHost *:80
   WSGISocketPrefix /var/run/wsgi
   WSGIPythonPath /home/SERVER_USERNAME/.virtualenvs/histology_env/lib/python2.6/site-packages
   <VirtualHost *:80>
   
           WSGIDaemonProcess safe python-path=/opt/virtual_microscope:/home/SERVER_USERNAME/.virtualenvs/histology_env/lib/python2.6/site-packages
           WSGIProcessGroup safe
           WSGIScriptAlias / /opt/MY_PROJECT/MY_PROJECT/wsgi.py
   
           Alias /static/ /var/www/html/home/static/
           Alias /slides/ /var/www/html/pictures/slides/
   
           <Directory /opt/MY_PROJECT/MY_PROJECT/>
                   Order deny,allow
                   Allow from all
           </Directory>
   </VirtualHost>
   

5. After you change these settings in the host file, make sure you sudo service httpd reload

Good luck, I know what you're going through and it is frustrating to not have the answers. Hope this works for you, it did for me.

You should be specifying the virtualenv for the project in your Apache config, not your application WSGI file. Since you're using Apache, see https://docs.djangoproject.com/en/dev/howto/deployment/wsgi/modwsgi/#using-a-virtualenv for what you need to put into your Apache configuration. I would also highly recommend running in daemon mode - unless you have a very good reason not to, you should almost always be using daemon mode on Apache.

Then reset your project WSGI file to

import os
os.environ.setdefault("DJANGO_SETTINGS_MODULE", "my_project.settings")

from django.core.wsgi import get_wsgi_application
application = get_wsgi_application()