The Celery container still outputs some unstructured logs

[sergei-maertens]

Product versie / Product version

3.1.0

Omschrijf het probleem / Describe the bug

Having deployed the latest version to get structured logs, I'm still seeing some un-structured logs being emitted in the celery worker container, together with structured logs. I suspect log propagation is causing things to be logged twice.

Example:

2025-06-06 15:01:32,538 INFO celery.worker.consumer.connection  Connected to redis://objecten-maykin-test-redis:6379/1
{"event": "Connected to redis://objecten-maykin-test-redis:6379/1", "source": "app", "timestamp": "2025-06-06T13:01:32.539903Z", "logger": "celery.worker.consumer.connection", "level": "info"}

When logging in structured mode, I do NOT want to see unstructured logs, especially if the log events are identical.

Stappen om te reproduceren / Steps to reproduce

1. Pull image tag 3.1.0 - this should be able to reproduce with docker compose as well
2. Inspect the container logs with docker logs <container>

Verwacht gedrag / Expected behavior

• Logs are not duplicated
• Structured logs are emitted only

[stevenbal]

@TimdeBeer1 I think the same issue might occur for Open Notificaties