Traefik ingress

[Thijmen]

Hi there,

I am tinkering around a little bit, would it be possible to have Traefik as well as an ingress, just like nginx?

[vitobotta]

Hey, so even though hetzner-k3s uses k3s, which has Traefik support built in, I originally decided to keep things as standard as possible. This means avoiding k3s-specific implementations when thinking from the user's perspective. That's why you can't enable the built-in Traefik support right now. But I plan to make this configurable in an upcoming release.

For now, you can use a workaround. Just edit the file at https://github.com/vitobotta/hetzner-k3s/blob/main/templates/master_install_script.sh and remove the line that says --disable traefik. This will let k3s set up Traefik for you if you want to use the built-in support. You'll need to set up Crystal on your local machine to run the modified code until I add this as a native option.

Alternatively, you can just install Traefik using the Helm chart or manifests, similar to how you'd set up nginx or other ingress controllers.

[vitobotta]

A PR would be great! To keep things consistent, like with the CNI, I would go for this structure:

...
networking:
  ssh:
    ...
  ingress:
    enabled: true
    mode: traefik

This matches our other settings and also makes it easier to add support for other ingress controllers later on. Thanks a lot for working on this!

[Thijmen]

@vitobotta Sure thing, would you like to have some config options for the loadbalancer spec as well, so a predefined location can be set? Please note, that we'd have to alter some file as described here; https://docs.k3s.io/helm#customizing-packaged-components-with-helmchartconfig

Not sure how you would feel about that. I can understand that if you would recommend installing Traefik manually because that could be a better option.

[Thijmen]

Maybe it's better to extend the documentation to deploy Traefik as an ingress, on a second thought.

[vitobotta]

I'm not sure; I need to think about it. As I said, the idea was to create a tool that generates generic clusters. I'm not fully convinced about showing k3s-specific settings because of this.

[Thijmen]

Which I can totally understand. Let me know if you would be open for a PR that shows how to install Traefik.