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CKA study material · question 690 of 1000

A Pod's requirements match no node in the cluster. What does kube-scheduler do?

  1. It marks the Pod Failed with reason Unschedulable
  2. It deletes the Pod so the controller can recreate it
  3. It relaxes the Pod's required affinity to a preference
  4. It leaves the Pod unscheduled and keeps retrying
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Answer: D. It leaves the Pod unscheduled and keeps retrying

A Pod with no feasible node simply stays unscheduled until the scheduler can place it, which is why a Pending Pod's events are the place to look for the filtering reason.

Source: Kubernetes Scheduler (Kubernetes) — kube-scheduler (overview)

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