Get Instant Solutions for Kubernetes, Databases, Docker and more
Django is a high-level Python web framework that encourages rapid development and clean, pragmatic design. It is designed to help developers take applications from concept to completion as quickly as possible. Django emphasizes reusability, less code, low coupling, rapid development, and the principle of 'don't repeat yourself'. It is widely used for building web applications due to its simplicity and flexibility.
When working with Django, you might encounter the django.core.exceptions.DisallowedHost
error. This error typically manifests as a server error when you try to access your Django application. The error message indicates that the host header in the request is not recognized by the Django application.
This error often occurs when deploying a Django application to a new environment or server, or when accessing the application through a new domain or IP address.
The DisallowedHost
exception is raised when the HTTP request's host header does not match any of the allowed hosts specified in the Django settings. This is a security measure to prevent HTTP Host header attacks, which can occur when an attacker sends a request with a fake host header.
The ALLOWED_HOSTS
setting in Django is a list of strings representing the host/domain names that this Django site can serve. This setting is crucial for security, especially when deploying your application to production.
To resolve the DisallowedHost
error, you need to update the ALLOWED_HOSTS
setting in your settings.py
file to include the host that is causing the error.
settings.py
file.ALLOWED_HOSTS
setting. It typically looks like this:ALLOWED_HOSTS = []
example.com
, update the setting as follows:ALLOWED_HOSTS = ['example.com']
ALLOWED_HOSTS = ['*']
For more information on Django's security settings, you can refer to the official Django documentation on ALLOWED_HOSTS. Additionally, for a deeper understanding of HTTP Host header attacks, you can read more on OWASP.
By following these steps, you should be able to resolve the DisallowedHost
error and ensure that your Django application is accessible from the desired hosts.
(Perfect for DevOps & SREs)
(Perfect for DevOps & SREs)