[WIP] kubespray on arm64

[vielmetti]

with @Miouge1 , document what we need to get arm64 (on Packet) running with kubespray.

Not ready to merge yet.

Related issues:

• Add checksums for arm64 images for hyperkube, kubeadm and cni_binary #4176 Add checksums for arm64 images for hyperkube, kubeadm and cni_binary (@miouge)
• Gaps when porting to AArch64 #2551 Gaps when porting to AArch64

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: vielmetti
To fully approve this pull request, please assign additional approvers.
We suggest the following additional approver: mattymo

If they are not already assigned, you can assign the PR to them by writing /assign @mattymo in a comment when ready.

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[fejta-bot]

Issues go stale after 90d of inactivity.
Mark the issue as fresh with /remove-lifecycle stale.
Stale issues rot after an additional 30d of inactivity and eventually close.

If this issue is safe to close now please do so with /close.

Send feedback to sig-testing, kubernetes/test-infra and/or fejta.
/lifecycle stale

[woopstar]

Shouldn't this be converted to an issue, and not PR ?

[vielmetti]

Yes, this should be an issue and not a PR.

[woopstar]

Closing, then.

[Miouge1]

@woopstar and @vielmetti arm64 support in Kubespray is recaped here: https://github.com/kubernetes-sigs/kubespray/blob/master/docs/arch.md

Currently based on one-off testing, but if there are small arm64 machines available (something like t1.small) for testing, we could do automatic CI on it

[vielmetti]

@Miouge1 - do you need more than one physical machine, and can you do the testing with on-demand systems or do you need dedicated machines? Happy to converse in detail about your needs.

[Miouge1]

@vielmetti small on-demand system would be perfect, dedicated machine would make things a bit more complicated.

[vielmetti]

@Miouge1 - you should be able to do an on-demand c1.large.arm (ThunderX) system, there's availability in EWR1. That's our smallest machine doing Arm at the moment.