Multi-arch images about cluster-api-visualizer

[sbueringer]

cc @killianmuldoon

If I remember correctly we were mainly looking additionally for arm64 images.

[Jont828]

@sbueringer Thanks for the suggestion, I don't think it should be too hard to port those changes to the Dockerfile. I'm not sure, however, how we could handle having a Helm chart for multiple architectures, i.e. if we have images like cluster-api-visualizer-$(ARCH):v1.0.0, what can we put in the Helm chart?

[sbueringer]

You just use the image without the arch suffix.

Essentially you will push arch specific images and one manifest pointing to the arch specific images (cf with released CAPI YAMLs)

[Jont828]

Could you link an example of a manifest pointing to the arch specific images? I'm not sure which files you mean by CAPI YAMLs.

[sbueringer]

Sure

Image: registry.k8s.io/cluster-api/cluster-api-controller:v1.3.0
https://github.com/kubernetes-sigs/cluster-api/releases/download/v1.3.0/cluster-api-components.yaml

In CAPI it works like this:

• build arch-specific images
• push: (https://github.com/kubernetes-sigs/cluster-api/blob/main/Makefile#L988-L992)
  • push arch specific images
  • docker manifest create (which will be registry.k8s.io/cluster-api/cluster-api-controller:v1.3.0)
  • add all arch specific images to that manifest
  • push the manifest (registry.k8s.io/cluster-api/cluster-api-controller:v1.3.0)

Results in this

https://console.cloud.google.com/gcr/images/k8s-staging-cluster-api

P.S. Slightly simplified, but that should be the relevant parts for you.