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CKA study material · question 649 of 1000

Which DaemonSet Pods get an automatic toleration for the node.kubernetes.io/network-unavailable taint?

  1. All DaemonSet Pods
  2. Only those in the kube-system namespace
  3. Only those whose priorityClassName is system-node-critical
  4. Only those with spec.hostNetwork set to true
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Answer: D. Only those with spec.hostNetwork set to true

That toleration exists so a CNI installer using host networking can run before the Pod network works; a DaemonSet Pod on the Pod network would have nothing to run on.

Source: DaemonSet (Kubernetes) — How Daemon Pods are scheduled › Taints and tolerations

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