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CKA study material · question 610 of 1000

A cluster with tens of thousands of Secret-to-Pod mounts is straining its API server. Which change reduces that load?

  1. Marking those Secrets immutable, so kubelets stop watching them
  2. Increasing the Secret size limit
  3. Switching Secrets from data to stringData
  4. Moving the Secrets into the kube-system namespace
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Answer: A. Marking those Secrets immutable, so kubelets stop watching them

The kubelet does not maintain a watch on Secrets marked immutable, which measurably reduces API server load on clusters with very many Secret mounts.

Source: Secrets (Kubernetes) — Immutable Secrets

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