Django Settings ALLOW_HOST not updating

Heya,

Check ALLOWED_HOSTS in settings.py

Ensure your domain name is listed in ALLOWED_HOSTS. It should look something like this:

ALLOWED_HOSTS = ['your-domain.com', 'www.your-domain.com']

If you’re using environment variables for production settings, make sure the domain name is correctly passed to the ALLOWED_HOSTS variable.

For example, in settings.py:

import os

ALLOWED_HOSTS = os.getenv('DJANGO_ALLOWED_HOSTS', '').split(',')

Check the code on your Droplet and make sure that settings.py is actually being updated. Also, what do you mean by build and deploy? Can you give more info about your workflow?

Hi there!

There are a few things that you could check here starting with the ALLOWED_HOSTS setting in settings.py and making sure that it is correctly set with your domain name:

ALLOWED_HOSTS = ['domain-name.com', 'www.domain-name.com']

If you’re deploying with environment variables, make sure they are properly set and imported:

import os
ALLOWED_HOSTS = os.getenv('DJANGO_ALLOWED_HOSTS', 'localhost').split(',')

Check if the environment variable DJANGO_ALLOWED_HOSTS is set in your droplet.

After that, if you use caching (e.g., with gunicorn or uwsgi), restart your Django server to apply the new settings:

sudo systemctl restart gunicorn

Or if you are using a Docker container, rebuild and restart it:

docker-compose down
docker-compose up --build -d

On another note, if DEBUG is set to True in production, it could cause unexpected behavior. Make sure to set it to False:

DEBUG = False

If this is still not working, I would suggest checking your logs for more details:

tail -f /var/log/nginx/error.log
tail -f /var/log/gunicorn/error.log

Let me know how it goes!

- Bobby