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kubeadm init hangs waiting for the control plane. Which two causes are most common?

  1. A missing StorageClass or an unbound PVC
  2. An unset dnsPolicy or a missing CoreDNS ConfigMap
  3. Missing network connectivity, or control-plane containers crash-looping
  4. An expired bootstrap token or a full disk
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Answer: C. Missing network connectivity, or control-plane containers crash-looping

The usual causes are no full network connectivity on the machine, or control-plane containers hanging or crash-looping.

Source: Troubleshooting kubeadm (Kubernetes) — kubeadm blocks waiting for control plane during installation

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