How to Use mod_wsgi to apply Django to Apache

Http://blog.stannard.net.au/2010/12/11/installing-django-with-apache-and-mod_wsgi-on-ubuntu-10-04/ installing Django with Apache and mod_wsgi on Ubuntu 10.04by Kevan Stannard
| Published: December 11,201 0

Step by step instructions for installing Django with Apache and mod_wsgi on Ubuntu 10.04.

Part 1-Prepare the server

Update the server

> sudo apt-get update> sudo apt-get upgrade

Install Apache and mod_wsgi

> sudo apt-get install apache2 libapache2-mod-wsgi

Install setup tools and Pip

> sudo apt-get install python-setuptools> sudo apt-get install python-pip

Install Django

> sudo pip install django

Create a folder for storing our sites

I'll be placing our sites in the/srv/WWW directory. The/srv directory shoshould already exist so we just need to create the/WWW directory

> sudo mkdir /srv/www

Part 2-add host entries for testing

We will set up two domains for testing the configuration
-One for testing that wsgi is working, and
-One for testing that Django is working.

My Test Virtual Machine's IP address is 172.16.52.130 so I'll set up the following in my
LocalHosts file (not on the server)

> sudo nano /etc/hosts

And add the following

172.16.52.130    djangoserver172.16.52.130    wsgi.djangoserver172.16.52.130    hello.djangoserver

Part 3-Test wsgi is working

Create our wsgi test site content

> sudo mkdir /srv/www/wsgi> sudo nano /srv/www/wsgi/app.wsgi

And add the content

def application(environ, start_response):    status = '200 OK'    output = 'Hello World!'     response_headers = [('Content-type', 'text/plain'),                        ('Content-Length', str(len(output)))]    start_response(status, response_headers)     return [output]

Create a new Apache site

> sudo nano /etc/apache2/sites-available/wsgi

And add the content

<VirtualHost *:80>     ServerName wsgi.djangoserver    DocumentRoot /srv/www/wsgi     <Directory /srv/www/wsgi>        Order allow,deny        Allow from all    </Directory>     WSGIScriptAlias / /srv/www/wsgi/app.wsgi </VirtualHost>

And activate the site

> sudo a2ensite wsgi> sudo /etc/init.d/apache2 reload

Then open your web browser and browse

http://wsgi.djangoserver

You shoshould see a 'hello world! 'Message

Part 4-Test Django is working

Create a new Django site

> cd /srv/www> sudo django-admin.py startproject hello

Create a wsgi file for the site

> sudo mkdir /srv/www/hello/apache> sudo nano /srv/www/hello/apache/django.wsgi

And add the content

import osimport sys path = '/srv/www'if path not in sys.path:    sys.path.insert(0, '/srv/www') os.environ['DJANGO_SETTINGS_MODULE'] = 'hello.settings' import django.core.handlers.wsgiapplication = django.core.handlers.wsgi.WSGIHandler()

Create a new Apache site

> sudo nano /etc/apache2/sites-available/hello

And add the content

<VirtualHost *:80>     ServerName hello.djangoserver    DocumentRoot /srv/www/hello     <Directory /srv/www/hello>        Order allow,deny        Allow from all    </Directory>     WSGIDaemonProcess hello.djangoserver processes=2 threads=15 display-name=%{GROUP}    WSGIProcessGroup hello.djangoserver     WSGIScriptAlias / /srv/www/hello/apache/django.wsgi </VirtualHost>

And activate the site

> sudo a2ensite hello> sudo /etc/init.d/apache2 reload

Then open your web browser and browse

http://hello.djangoserver

You shoshould see the Django default installation message.

Notes

Note 1-running in daemon mode

Our test Django site is configured to run in daemon mode-because of these two lines:

WSGIDaemonProcess hello.djangoserver processes=2 threads=15 display-name=%{GROUP}WSGIProcessGroup hello.djangoserver

So if we modify the code then rather than restarting Apache we can just
TouchThe wsgi file and the changes will be picked up:

> sudo touch /srv/www/hello/apache/django.wsgi

Note 2-specify the application module name

It appears to be a good idea to specify the application module when specifying the django_settings_module. So rather than writing this:

os.environ['DJANGO_SETTINGS_MODULE'] = 'settings'

We shoshould write this:

os.environ['DJANGO_SETTINGS_MODULE'] = 'hello.settings'

Useful commands

Error Log File

If you get errors, check the Apache Log File

> tail /var/log/apache2/error.log

Test Using Development Mode

If your app does not seem to be working using wsgi, then check if it is working via the development server.

> cd /srv/www/hello> python manage.py runserver 0:8080

The in your web browser go

http://hello.djangoserver:8080

References

An Improved wsgi script for use with Django.
Http://blog.dscpl.com.au/2010/03/improved-wsgi-script-for-use-with.html

Modwsgi-integration with Django
Http://code.google.com/p/modwsgi/wiki/IntegrationWithDjango

How do I stop getting importerror: cocould not import settings 'mofin. setting' when using Django with wsgi?
Http://stackoverflow.com/questions/1411417/how-do-i-stop-getting-importerror-could-not-import-settings-mofin-settings-whe

Configuration problems with Django and mod_wsgi
Http://stackoverflow.com/questions/2587251/configuration-problems-with-django-and-mod-wsgi

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