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CKA study material · question 536 of 1000

On a busy node, keeping MaxPerPodContainer dead containers for every Pod would exceed the cluster-wide MaxContainers ceiling. What does the kubelet do?

  1. It raises MaxContainers to fit
  2. It lowers MaxPerPodContainer, potentially as far as 1
  3. It stops collecting containers until an administrator intervenes
  4. It evicts the Pods with the most dead containers
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Answer: B. It lowers MaxPerPodContainer, potentially as far as 1

The global ceiling wins: the kubelet adjusts the per-Pod figure downward to resolve the conflict, in the worst case down to one, evicting the oldest containers.

Source: Garbage Collection (Kubernetes) — Container garbage collection

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