Is arm64 platform supported?

[aurorazl]

Is arm64 suppoerted now?I can't find any components of arm64 version in dockerhub. Ialso try to run the same component's image in arm64 platform,and init linux error was raise!

[nak3]

It is not supported for now.

As #2517 also discussed, I think we will not support it until ko support multi-platform which is tracked by ko-build/ko#6.

[dprotaso]

Although ko doesn't build multi-platform images you can use go build env vars GOARCH=arm64 ko ... to build your own arm images for now

@mattmoor has been playing with arm - I believe on a Raspberry Pi.

[mattmoor]

If you have an envoy ARM64 build (which I think will be shipped with 1.15+) then you should be able to build much of the rest of knative with GOARCH=ARM64 ko apply -f ....

We don't have official support for any platform/arch other than linux/amd64 currently.

[mattmoor]

Gonna close this now, but feel free to open a new issue if you have any additional questions.

[aurorazl]

If you have an envoy ARM64 build (which I think will be shipped with 1.15+) then you should be able to build much of the rest of knative with GOARCH=ARM64 ko apply -f ....

We don't have official support for any platform/arch other than linux/amd64 currently.

Thanks you,it works!

[ddelange]

Hi @mattmoor! 👋

With the recent push for linux/arm64 hardware, are there any plans or aspirations to start pushing multi-arch images and allow scheduling on arm-based nodes in the manifests similar to istio?

[mattmoor]

IIRC Knative publishes multi-arch images for ~5 architectures. Historically the main limiting factor for serving has been where the ingress layer supports (typically limited by Envoy). I've been running Knative serving on arm64 for almost 2 years (basically since Envoy had an arm64 build), so it definitely works.

[ddelange]

Thanks for the quick response! The question came up for me (getting into KServing) when I applied the manifests from https://github.com/knative/docs/blob/release-1.4/docs/install/yaml-install/serving/install-serving-with-yaml.md.

For future readers: I now indeed see arm64 images on gcr.io, I will add an kubernetes.io/arch=arm64 toleration and nodeSelector via kubectl patch deployment, as our arm nodes are tainted.

[dprotaso]

some more details about ko which does the multi-arch builds

https://kubesimplify.com/getting-started-with-ko-a-fast-container-image-builder-for-your-go-applications