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CKA study material · question 517 of 1000

A 20-node cluster in a single zone loses network connectivity to most of its nodes, pushing the unhealthy fraction past 0.55. With default settings, what does the node controller do?

  1. It evicts at the secondary rate of 0.01 per second
  2. It continues evicting at the normal rate
  3. It stops evicting entirely
  4. It cordons every node and waits for an administrator
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Answer: C. It stops evicting entirely

In a cluster at or below --large-cluster-size-threshold, 50 nodes by default, crossing the unhealthy zone threshold stops evictions rather than slowing them: a small cluster losing most nodes is more likely a control plane problem.

Source: Nodes (Kubernetes) — Node controller › Rate limits on eviction

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