PenPen

Yesterday I’ve set up an interesting uwsgi installation, which can serve multiple sites from single django project. Here is uWSGI Upstart script for ubuntu server:

description "uWSGI starter"

start on (local-filesystems
and runlevel [2345])
stop on runlevel [016]

respawn

exec /usr/local/bin/uwsgi --uid penpen \
-s 127.0.0.1:9010 -M -p 2 --reload-os-env \
--logto /home/penpen/logs/biribiri/uwsgi_log \
-H /home/penpen/biribiri/virtualenv \
--pythonpath /home/penpen --vhost --vhost-host

This script uses uWSGI virtual hosting mode, which allows multiple wsgi apps in single interpreter (unlike emperor mode, which uses interpreter per app (or site)).
It is necessary to use “—reload-os-env” option, which passes environment variable through UWSGI_SETENV parameter. In this installation nginx passes current site name in uwsgi, which loads settings from module named as biribiri.hosts.SITE_NAME.
For production use, it would be a nice idea to check if file exists and use default settings for non-existant sites.
I use DJANGO_HOST instead of DJANGO_SETTINGS_MODULE because in current installation it overrides somewhere.
Nginx config:

server {
	listen 80 default;
	server_name biribiri;
	root /home/penpen/biribiri;

	location / {
		uwsgi_pass 127.0.0.1:9010;
		uwsgi_param UWSGI_MODULE biribiri.production.wsgi;
		uwsgi_param UWSGI_SETENV DJANGO_HOST=biribiri.hosts.$http_host;
		include uwsgi_params;	
	}
}

wsgi.py connector for django (in biribiri.production.wsgi):

import os
import sys

path = '/home/penpen/biribiri'

if path not in sys.path:
    sys.path.append(path)

os.environ['DJANGO_SETTINGS_MODULE'] = os.environ['DJANGO_HOST'].replace('.ru', '')

import django.core.handlers.wsgi
application = django.core.handlers.wsgi.WSGIHandler()

In the above code snippet we are going to remove TLD from site name, because python modules don’t allow dot in their names.