How to fix "DisallowedHost at / Invalid HTTP_HOST header:. The domain name provided is not valid according to RFC 1034/1035." error in Django?

fix-domain-name-provided-is-not-valid-according-to-RFC-1034_1035.md

How to fix "DisallowedHost at / Invalid HTTP_HOST header:. The domain name provided is not valid according to RFC 1034/1035." error in Django?

Solution

• Don't add include proxy_params; in Django application's NGINX configuration file.
• Cross-check the Django application's NGINX configuration. If include proxy_params; line added, remove it.
• proxy_params(/etc/nginx/proxy_params) file have proxy_set_header Host $http_host; line already. It will override proxy_set_header Host $host;

Related notes

1. Security configurations in Django while deploying on production
2. How to fix ERR_TOO_MANY_REDIRECTS issue in Django+Gunicorn+NGINX?

References

1. django- nginx: open() “/etc/nginx/proxy_params” failed (2: No such file or directory) in /etc/nginx/sites-enabled/myproject:11
2. Django + Gunicorn + Nginx: Bad Request 400 in Debug=True
3. "Bad request 400" in Django. Beyond the ALLOWED_HOSTS
4. Django redirecting http -> https