Regression of `django_migrations_unapplied_total` metric's availability

[Ma27]

Describe the bug
The helm charts indicate that there's a metric django_migrations_unapplied_total to check if all DB migrations were properly applied[1].

To Reproduce

• Configure a prometheus endpoint
• Send GET a request against /metrics : django_http_* metrics will be there, django_migrations_* won't.

Expected behavior
To have this metric available.

Screenshots
n/a

Logs
n/a

Version and Deployment (please complete the following information):

• authentik version: 2024.4.2
• Deployment: custom

Additional context
I managed to identify two issues:

• django-prometheus requires you to explicitly turn this on nowadays[2]. This can be fixed by adding PROMETHEUS_EXPORT_MIGRATIONS to authentik.root.settings:

diff --git a/authentik/root/settings.py b/authentik/root/settings.py
index 15e689b06..7668a444b 100644
--- a/authentik/root/settings.py
+++ b/authentik/root/settings.py
@@ -19,6 +19,7 @@ from authentik.stages.password import BACKEND_APP_PASSWORD, BACKEND_INBUILT, BAC
 
 BASE_DIR = Path(__file__).absolute().parent.parent.parent
 
+PROMETHEUS_EXPORT_MIGRATIONS = True
 DEBUG = CONFIG.get_bool("debug")
 SECRET_KEY = CONFIG.get("secret_key")
 

• For some reason I can't explain this option doesn't have any effect until you remove the run_migrations() invocation from the gunicorn config. I can't explain way which is why I refrain from filing a patch for now.
  EDIT: for it to work currently, you also need to set preload_app to False.

[1] https://github.com/goauthentik/helm/blob/main/charts/authentik/templates/prometheusrule.yaml#L142C36-L142C69
[2] korfuri/django-prometheus#425

[authentik-automation]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[Ma27]

Still a problem.

[authentik-automation]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[Ma27]

.

[authentik-automation]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[Ma27]

.

[authentik-automation]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.