NGINX Unit
v. 1.21.0

Django Channels§

To run Django apps using the Django Channels framework with Unit:

  1. Install Unit with a Python 3.6+ language module.

  2. Install and configure the Django 3.0+ framework. The official docs recommend setting up a virtual environment; if you do, list it as home when configuring Unit later. Here, it’s /path/to/venv/.

  3. Install Django Channels in your virtual environment:

    $ cd /path/to/venv/
    $ source bin/activate
    $ pip install channels
    $ deactivate
    
  4. Create a Django project. Here, we’ll use the tutorial chat app, installing it at /path/to/app/; use a real path in your configuration. The following steps assume your project uses basic directory structure:

    /path/to/app/
    |-- manage.py
    |-- chat/
    |   |-- ...
    |-- mysite/
    |   |-- ...
    |   |-- asgi.py
    |   `-- wsgi.py
    `-- static/
    
  5. Set installation path permissions to secure access, for example:

    # chown -R app_user:app_group /path/to/app/
    

    Update the placeholders above with actual values, noting them for later use in Unit configuration.

  6. Integrate Django Channels into your project according to the official Channels guide.

  7. Next, create the Django Channels configuration for Unit. Here, the /path/to/app/ directory is stored in the path option; the virtual environment is home; the ASGI module in the mysite/ subdirectory is imported via module. If you reorder your directories, set up path, home, and module accordingly.

    You can also set up some environment variables that your project relies on. Finally, if your project uses Django’s static files, optionally add a route to serve them with Unit.

    {
        "listeners": {
            "*:80": {
                "pass": "routes"
            }
        },
    
        "routes": [
            {
                "match": {
                    "uri": "/static/*"
                },
    
                "action": {
                    "share": "/path/to/app/"
                }
            },
            {
                "action": {
                    "pass": "applications/djangochannels"
                }
            }
        ],
    
        "applications": {
            "djangochannels": {
                "type": "python 3",
                "user": "app_user",
                "group": "app_group",
                "path": "/path/to/app/",
                "home": "/path/to/venv/",
                "module": "mysite.asgi",
                "environment": {
                    "DJANGO_SETTINGS_MODULE": "mysite.settings"
                }
            }
        }
    }
    
  8. Upload the updated configuration. Assuming the JSON above was added to config.json:

    # curl -X PUT --data-binary @config.json --unix-socket \
           /path/to/control.unit.sock http://localhost/config/
    

    Note

    The control socket path may vary; run unitd --help or see Startup for details.

    After a successful update, your project and apps (here, a chat) run on the listener’s IP address and port:

    Django Channels on Unit - Tutorial App Screen