A single Docker label error prevents all from updating #692

New Issue

MrUnknownDE · 2026-04-05T17:34:09+02:00

MrUnknownDE commented

2026-04-05 17:34:09 +02:00

Originally created by @sippeangelo on 10/30/2025

Describe the Bug

I've been using the Docker socket functionality and it's really cool! However, it seems that if ANY Docker container has a label that Pangolin doesn't like, it prevents all other Docker services from being parsed by Pangolin.

I was updating a port number on an unrelated service (service-2), and I was puzzled why the port number wouldn't update in Pangolin even though I changed the label and brought the service up again. After a while I found this in the Pangolin log:

2025-10-30T18:47:36+00:00 [error]: Failed to update database from config: Error: Validation error: Required at "proxy-resources.service-2.targets[0].port"

The problem seemed to be that the port label NEEDED to be present on service-2 (I'm guessing because the container didn't expose one that it could pick up automatically?), but this made service-1 unable to change. I added the port label to service-2 and that made service-1 update, now that the Pangolin log was error free.

Environment

Pangolin Version: v1.11.1
Gerbil Version:
Traefik Version: v3.3.3
Newt Version:
Olm Version: (if applicable)

To Reproduce

See description

Expected Behavior

Unrelated label configuration errors shouldn't affect other services.

*Originally created by @sippeangelo on 10/30/2025* ### Describe the Bug I've been using the Docker socket functionality and it's really cool! However, it seems that if ANY Docker container has a label that Pangolin doesn't like, it prevents all other Docker services from being parsed by Pangolin. I was updating a port number on an unrelated service (`service-2`), and I was puzzled why the port number wouldn't update in Pangolin even though I changed the label and brought the service up again. After a while I found this in the Pangolin log: ``` 2025-10-30T18:47:36+00:00 [error]: Failed to update database from config: Error: Validation error: Required at "proxy-resources.service-2.targets[0].port" ``` The problem seemed to be that the `port` label NEEDED to be present on `service-2` (I'm guessing because the container didn't expose one that it could pick up automatically?), but this made `service-1` unable to change. I added the `port` label to `service-2` and that made `service-1` update, now that the Pangolin log was error free. ### Environment - Pangolin Version: v1.11.1 - Gerbil Version: - Traefik Version: v3.3.3 - Newt Version: - Olm Version: (if applicable) ### To Reproduce See description ### Expected Behavior Unrelated label configuration errors shouldn't affect other services.

MrUnknownDE added the Improvement config Improvement Improvement labels 2026-04-05 17:34:10 +02:00

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main

dev

dependabot/npm_and_yarn/dev-minor-updates-b4e5d6b9c5

revert-2766-feature/systemd-install-instructions

dependabot/npm_and_yarn/prod-patch-updates-05702d39f2

dependabot/npm_and_yarn/next-16.2.1

dependabot/npm_and_yarn/recharts-3.8.1

alerting-rules

private-site-ha

dependabot/docker/docker/library/node-25-slim

ssh

delete-account

msg-delivery

org-only-idp

cicd

patch

site-targets-auto-login

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Reference: github/pangolin#692