Support server-side apply

[roycaihw]

What is the feature and why do you need it:
Kubernetes server-side apply is meant to be the new standard of patching objects and managing fields. Today the Python client supports v18 API (v18.17.0a1), where server-side apply went beta 2. We should explore what's missing to support the feature in this client.

• what API endpoints support SSA?
• what's the content-type to use SSA?
• how does client-go support SSA?

cc @fabianvf

[roycaihw]

It's not GA yet. Likely it's becoming GA in the upcoming 1.22 release.

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/lifecycle stale

[sreber84]

Now that kubernetes 1.22 is GA with https://kubernetes.io/blog/2021/08/04/kubernetes-1-22-release-announcement/#server-side-apply-graduates-to-ga are we comfortable making this happen?

[k8s-triage-robot]

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/lifecycle rotten

[k8s-triage-robot]

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• After 90d of inactivity, lifecycle/stale is applied
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/close

[k8s-ci-robot]

@k8s-triage-robot: Closing this issue.

In response to this:

The Kubernetes project currently lacks enough active contributors to adequately respond to all issues and PRs.

This bot triages issues and PRs according to the following rules:

• After 90d of inactivity, lifecycle/stale is applied
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/close

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[roycaihw]

/reopen
/remove-lifecycle rotten

[k8s-ci-robot]

@roycaihw: Reopened this issue.

In response to this:

/reopen
/remove-lifecycle rotten

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[k8s-triage-robot]

The Kubernetes project currently lacks enough contributors to adequately respond to all issues and PRs.

This bot triages issues and PRs according to the following rules:

• After 90d of inactivity, lifecycle/stale is applied
• After 30d of inactivity since lifecycle/stale was applied, lifecycle/rotten is applied
• After 30d of inactivity since lifecycle/rotten was applied, the issue is closed

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/lifecycle stale

[k8s-triage-robot]

The Kubernetes project currently lacks enough active contributors to adequately respond to all issues and PRs.

This bot triages issues and PRs according to the following rules:

• After 90d of inactivity, lifecycle/stale is applied
• After 30d of inactivity since lifecycle/stale was applied, lifecycle/rotten is applied
• After 30d of inactivity since lifecycle/rotten was applied, the issue is closed

You can:

• Mark this issue or PR as fresh with /remove-lifecycle rotten
• Close this issue or PR with /close
• Offer to help out with Issue Triage

Please send feedback to sig-contributor-experience at kubernetes/community.

/lifecycle rotten

[roycaihw]

/remove-lifecycle rotten

[sftim]

How about marking this one as frozen?

[ryota2425-murakami]

I am surprised that this problem has not been resolved yet. Are there any alternatives?

[fabianvf]

@ryota2425 I believe the dynamic client supports it

[ryota2425-murakami]

Thanks. That is what I was looking for.

[james-mchugh]

What's the blocker with adding support for this outside of the dynamic client (e.g. for the AppsV1API client)? I see that many of the fields are already available, the only thing I don't see is how to change the Content-Type header of requests to use application/apply-patch+yaml. Is it a limitation of the openapi generator? Or do you just need someone willing to add support and put in a PR?