Support TLS Credentials in gRPC Probe

[kkoch986]

Enhancement Description

• One-line enhancement description (can be used as a release note): Adds the ability to configure client side TLS on the gRPC probe
• Kubernetes Enhancement Proposal:
• Discussion Link:
• Primary contact (assignee):
• Responsible SIGs: sig-node
• Enhancement target (which target equals to which milestone):
  • Alpha release target (x.y):
  • Beta release target (x.y):
  • Stable release target (x.y):
• [ ] Alpha
  • [ ] KEP (k/enhancements) update PR(s):
  • [ ] Code (k/k) update PR(s):
  • [ ] Docs (k/website) update PR(s):

Please keep this description up to date. This will help the Enhancement Team to track the evolution of the enhancement efficiently.

[kkoch986]

/sig node

[saschagrunert]

I'd be in favor of this, what do @kubernetes/sig-node-proposals folks think?

[kkoch986]

havent contributed before but im happy to take a crack at implementing it and progressing the KEP. may need a little guidance though

[SergeyKanzhelev]

yes. I think ignoring certificate issues may not even need a KEP. Need to think thru scenarios, but I doubt we will break anybody if we will enable it. I tried once, but didn't push thru: https://github.com/kubernetes/kubernetes/pull/124522

[kkoch986]

@SergeyKanzhelev yea i think we would need to provide an option since if the server is not accepting TLS and you include the TLS transport credentials itll fail to connect.

my thought was to just add the ability to just provide a cert, but maybe it would be helpful to also be able to disable the verification as well.

i can start putting my ideas together in the KEP and see what everyone thinks if that seems like the right next steps

[k8s-triage-robot]

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/lifecycle stale

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/lifecycle rotten

[kkoch986]

not sure the right course of action for this issue, but ive been trying to get final approval on the KEP PR: https://github.com/kubernetes/enhancements/pull/5029

id love to take a crack at implementing it once thats all approved

[k8s-triage-robot]

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/close not-planned

[k8s-ci-robot]

@k8s-triage-robot: Closing this issue, marking it as "Not Planned".

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/close not-planned

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[k8s-triage-robot]

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

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/close not-planned

[k8s-ci-robot]

@k8s-triage-robot: Closing this issue, marking it as "Not Planned".

In response to this:

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

This bot triages issues according to the following rules:

• After 90d of inactivity, lifecycle/stale is applied
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/close not-planned

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[k8s-triage-robot]

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

This bot triages issues 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
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/close not-planned

[k8s-ci-robot]

@k8s-triage-robot: Closing this issue, marking it as "Not Planned".

In response to this:

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

This bot triages issues 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
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You can:

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/close not-planned

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[bowei]

/reopen

[k8s-ci-robot]

@bowei: Reopened this issue.

In response to this:

/reopen

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[k8s-triage-robot]

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

This bot triages issues 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:

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

/close not-planned

[k8s-ci-robot]

@k8s-triage-robot: Closing this issue, marking it as "Not Planned".

In response to this:

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

This bot triages issues 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:

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/close not-planned

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[SergeyKanzhelev]

/remove-lifecycle rotten /reopen

[k8s-ci-robot]

@SergeyKanzhelev: Reopened this issue.

In response to this:

/remove-lifecycle rotten /reopen

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