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CKA study material · question 542 of 1000

A misbehaving Pod is flooding the API server with requests, yet leader election and the built-in controllers keep working. Which feature accounts for that?

  1. The kubelet's own client-side rate limiter
  2. --max-requests-inflight applied per client identity
  3. API Priority and Fairness, which isolates priority levels from each other
  4. Admission webhooks rejecting the excess requests
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Answer: C. API Priority and Fairness, which isolates priority levels from each other

API Priority and Fairness gives leader election, built-in controllers and Pod traffic separate concurrency budgets, so a noisy Pod cannot starve the others. It is enabled by default.

Source: API Priority and Fairness (Kubernetes) — Enabling/Disabling API Priority and Fairness

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