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CKA study material · question 409 of 1000

Kubelet client-certificate rotation has failed on a node. Which recovery steps apply? Choose two.

  1. Delete the node's Lease object
  2. Back up and delete the node's kubelet.conf and kubelet client certificates
  3. Generate a replacement with kubeadm kubeconfig user from a control-plane node holding the CA key
  4. Re-run kubeadm init on the failed node
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Answer: B. Back up and delete the node's kubelet.conf and kubelet client certificates
C. Generate a replacement with kubeadm kubeconfig user from a control-plane node holding the CA key

Recovery removes the stale kubelet credentials and regenerates them from a node that has the CA key.

Source: Troubleshooting kubeadm (Kubernetes) — Kubelet client certificate rotation fails

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