Something UDP-related is broken in 2.7.1

[faangbait]

Welcome!

• [X] Yes, I've searched similar issues on GitHub and didn't find any.
• [X] Yes, I've searched similar issues on the Traefik community forum and didn't find any.

What version of the Traefik's Helm Chart are you using?

10.21.1

What version of Traefik are you using?

2.7.1

What did you do?

I have a couple active UDP entrypoints/ingressroutes. I was prevented from upgrading the helm chart to the latest version. Last upgrade was 19 days ago, and it was successful.

What did you see instead?

The error thrown is, "Error: UPGRADE FAILED: Service "traefik-udp" is invalid: spec.ports: Required value"

Inspecting the config revealed that this Service is being specified with an invalid configuration.

https://github.com/traefik/traefik-helm-chart/blob/9da111bb8b44513a8623cba7a50cb353cba77309/traefik/templates/service.yaml#L102

What is your environment & configuration?

https://github.com/faangbait/antennae/tree/main/k8s

Values are in /infrastructure/traefik-values.yaml

Additional Information

The spec.ports array is empty. I think it probably needs to generate ports: {} instead of just a blank key.

When I remove the UDP entrypoints, installation proceeds as expected.

[faangbait]

Adding expose: true to the UDP entrypoints fixes it, which is weird, because I didn't see any changes to the default. But maybe I'm missing something.

[mloiseleur]

Hello @faangbait,

Thanks for your report. No, you're not. It's true that this charts needs at least one exposed port in order to deploy traefik service.