Metrics-server: Document securing connection between kube-apiserver <-> Metrics Server

[serathius]

We should do a better job informing users how to secure communication between apiserver and Metrics server. It should mention disabling insecureSkipTLSVerify

/kind documentation
/help

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In response to this:

We should do a better job informing users how to secure communication between apiserver and Metrics server. It should mention disabling insecureSkipTLSVerify

/kind documentation
/help

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[jenting]

I had a repo https://github.com/jenting/secure-metrics-server to deploy metrics-server in secure, hope it would help :smile:

[serathius]

Thanks @jenting, it looks really interesting. I will talk with someone more familiar with apimachinery to confirm this is aligned with current best practices. Would you be interested in contributing this to MS documentation?

[jenting]

To here https://github.com/kubernetes-sigs/metrics-server/blob/master/FAQ.md#how-to-run-metrics-server-securely, right?

[serathius]

Yes, before starting work let me get lgtm from someone from SIG-apimachinery & SIG-security. I think your instructions are very good, still it's could be possible to improve them with some feedback from area experts.

[serathius]

@logicalhan, are you know who should we ask about securing kube-apiserver -> extension apiserver communication and what is current recommended approach?

Would it be ok for us to recommend manual certificate creation like described here https://github.com/kubernetes-sigs/metrics-server/blob/master/FAQ.md#how-to-run-metrics-server-securely

[serathius]

ping @logicalhan

[logicalhan]

@liggitt probably has a better idea about this than me.

[serathius]

/triage accepted

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[serathius]

/remove-lifecycle stale
ping @liggitt

[liggitt]

Would it be ok for us to recommend manual certificate creation like described here https://github.com/kubernetes-sigs/metrics-server/blob/master/FAQ.md#how-to-run-metrics-server-securely

redirect to @deads2k

[serathius]

ping @deads2k