[Django]-Invalid http_host header

settings.py

ALLOWED_HOSTS = ['*'] // if you are in dev or docker

Edited

Ok guys, dont do this in production if you are not using docker, just put the IP addr.

Grettings

In your project settings.py file,set ALLOWED_HOSTS like this :

ALLOWED_HOSTS = ['62.63.141.41', 'namjoosadr.com']

and then restart your apache. in ubuntu:

/etc/init.d/apache2 restart

You can add ALLOWED_HOSTS to your settings file or env file:

ALLOWED_HOSTS = [".localhost", "127.0.0.1", "[::1]"]

if no other answer work you can try modifying manage.py and add this three lines

from django.utils.regex_helper import _lazy_re_compile
import django.http.request
django.http.request.host_validation_re = _lazy_re_compile(r"[a-zA-z0-9.:]*")

to end up having something like this:

import os
import sys

from django.utils.regex_helper import _lazy_re_compile
import django.http.request    
django.http.request.host_validation_re = _lazy_re_compile(r"[a-zA-z0-9.:]*")

def main():
    """Run administrative tasks."""
    os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'project01.settings')
    try:
        from django.core.management import execute_from_command_line
    except ImportError as exc:
        raise ImportError(
            "Couldn't import Django. Are you sure it's installed and "
            "available on your PYTHONPATH environment variable? Did you "
            "forget to activate a virtual environment?"
        ) from exc
    execute_from_command_line(sys.argv)


if __name__ == '__main__':
    main()

as it is explained in this post: How to Solve "The domain name provided is not valid according to RFC 1034/1035" in Django during Development

I was testing my Django app on minikube and because of the probes, it was failing with the following error:

Invalid HTTP_HOST header: '10.244.0.8:8080'. You may need to add '10.244.0.8' to ALLOWED_HOSTS.
Bad Request: /

I added the httpHeaders in my probes and it worked after that.

Before:

livenessProbe:
  httpGet:
    path: / # Replace with an endpoint that returns a 200 status code if the app is healthy
    port: 8080
  initialDelaySeconds: 10 # Delay before the first probe is executed
  periodSeconds: 10 # How often to perform the probe
readinessProbe:
  httpGet:
    path: / # Replace with an endpoint that indicates readiness
    port: 8080
  initialDelaySeconds: 5 # Delay before the first probe is executed
  periodSeconds: 5 # How often to perform the probe

After:

livenessProbe:
  httpGet:
    path: / # Replace with an endpoint that returns a 200 status code if the app is healthy
    port: 8080
    httpHeaders:
    - name: Host
      value: localhost
  initialDelaySeconds: 10 # Delay before the first probe is executed
  periodSeconds: 10 # How often to perform the probe
readinessProbe:
  httpGet:
    path: / # Replace with an endpoint that indicates readiness
    port: 8080
    httpHeaders:
    - name: Host
      value: localhost
  initialDelaySeconds: 5 # Delay before the first probe is executed
  periodSeconds: 5 # How often to perform the probe