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The Wire · Showcase

ADDON-RESIZER SHIPS KUBERNETES 1.37 SUPPORT, PERF TESTS GAIN WATCH DELAY MEASUREMENT

By RepoJournal · Filed · About Kubernetes

Addon-resizer 1.8.24 lands with new apiserver resource metrics, while perf-tests benchmark overhaul adds watch delay tracking and stable QPS enforcement.

The autoscaler team released addon-resizer 1.8.24 [1] to enable the component on Kubernetes 1.37, adding support for the apiserver_resource_objects metric that measures object count overhead on the control plane. In parallel, serathius shipped a comprehensive perf-tests improvement [2] that adds watch delay measurement via perflens inspection tools, resource tuning, and subroutine-based request execution to maintain stable QPS during benchmarks. Test infrastructure broke Go compatibility ground with a bump to Go 1.25 for 1.34 release jobs [3], dropping support for Go 1.24 and forcing downstream client-go users to pin v0.34.x if they need legacy compatibility. The release team cut a new releng image for gcb-docker-gcloud [4], and test-infra merged CAPI evaluation jobs using the new kubekins-e2e-v2 image [5] to measure impact on Kubernetes' primary integration test suite. VPA gained CodeRabbit review automation [6], and cloud-provider-gcp demoted noisy metis logs to debug level [7] to reduce signal noise in production clusters.

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Action items

References

  1. [1] addon-resizer-1.8.24 ↗ kubernetes/autoscaler
  2. [2] Improve write-througput benchmark ↗ kubernetes/perf-tests
  3. [3] Bump 1.34 go-compatibility jobs to Go 1.25 kubernetes/test-infra
  4. [4] release gcb-docker-gcloud as a releng image ↗ kubernetes/release
  5. [5] Add perodic and presubmit job for CAPI main with kubekins-e2e-v2 image ↗ kubernetes/test-infra
  6. [6] enable coderabbit for VPA ↗ kubernetes/autoscaler
  7. [7] metis: demote periodic and non-action logs to V(4) debug level ↗ kubernetes/cloud-provider-gcp

Quick answers

What shipped in Kubernetes on August 7, 2026?
Addon-resizer 1.8.24 lands with new apiserver resource metrics, while perf-tests benchmark overhaul adds watch delay tracking and stable QPS enforcement. In total, 20 commits, 12 pull requests, and 1 releases landed.
Who contributed to Kubernetes on August 7, 2026?
12 developers shipped this update, including serathius, emerbe, kubernetes-prow[bot], upodroid, dependabot, Jordan Liggitt, Karthik-K-N, and varshadeshmane92, and 4 more.
What were the notable Kubernetes updates?
addon-resizer-1.8.24, Improve write-througput benchmark, and Bump 1.34 go-compatibility jobs to Go 1.25.

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