Exception request: API Server Tracing

[David Ashpole]

• Enhancement name: API Server Tracing
• Enhancement status (alpha/beta/stable): alpha
• SIG: Instrumentation, API Machinery  T
• k/enhancements repo issue #: kubernetes/enhancements#647
• PR #’s: kubernetes/kubernetes#103601, kubernetes/kubernetes#103234
• Additional time needed (in days): 3
• Reason this enhancement is critical for this milestone: Tracing is a useful tool for debugging slow requests.
• Risks from adding code late: (to k8s stability, testing, etc.) Low.  Code is feature-gated, and only enabled in the alpha suite of tests.
• Risks from cutting enhancement: (partial implementation, critical customer usecase, etc.): One of the PRs above is the e2e test for the feature.  Cutting it would risk releasing functionality without proper testing.  The other PR adds telemetry to admission webhook requests.  Debugging slow webhook requests is one of the core use-cases of tracing.  Both PRs are passing tests, and reviewers have taken at least one pass, but need approval.

[Han Kang]

+1 for me, tracing without having webhooks instrumented takes away a ton of the value. And David has demonstrably shown it works.

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- Han

[Savitha Raghunathan]

Hi David,

Thanks for creating this exception request. Since this request has been determined as a release blocker by the sponsoring SIG (discussion link), we are APPROVING this request. Please make sure to merge the completed PRs by July 14th, EOD Pacific time. If you have any questions, please feel free to reach out to us in the #sig-release slack channel.

Have a great day!

Regards,

Savitha,

1.22 Release Team Lead

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