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CKA study material · question 71 of 1000

Two drains run in parallel against different nodes hosting one StatefulSet. What limits how many Pods go down at once?

  1. The node controller's eviction rate
  2. The PodDisruptionBudget, which is enforced across both drains
  3. The StatefulSet's podManagementPolicy
  4. Nothing; parallel drains bypass disruption budgets
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Answer: B. The PodDisruptionBudget, which is enforced across both drains

Parallel drains still respect the PodDisruptionBudget; any drain that would breach it is blocked.

Source: Safely Drain a Node (Kubernetes) — Draining multiple nodes in parallel

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