Developer builds Kubernetes upgrade-readiness tool after deep-reading changelogs 1.32–1.37

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A developer building a Kubernetes upgrade-readiness tool spent most of a weekend carefully reading all changelogs from versions 1.32 to 1.37, including patch releases, after a production cluster hit an unexpected issue on 1.33. By scripting an extractor against the kubernetes/kubernetes repository, they identified 36 changelog files covering sections such as Urgent Upgrade Notes, Deprecations, and API Changes. The deep-read surfaced several non-obvious findings, including that version 1.30 has zero Urgent Upgrade Notes and that some of 1.34's most critical breaking changes are buried under an inconspicuous heading. The exercise also revealed that dependent add-ons like CoreDNS, Istio, and Karpenter carry their own upgrade obligations not always reflected in Kubernetes release notes. The resulting open-source tool, kube-upgrade-check, is available on GitHub and flagged 31 additional items the developer missed on a first pass.

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