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CKA study material · question 567 of 1000

A kubeadm cluster has been running for eleven months and you want to know how much life its certificates have left. Which command reports that?

  1. kubeadm certs renew all --dry-run
  2. kubeadm config view
  3. kubeadm certs check-expiration
  4. kubeadm upgrade plan
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Answer: C. kubeadm certs check-expiration

kubeadm issues client certificates valid for one year, and kubeadm certs check-expiration lists each one with its residual time and whether it is externally managed.

Source: Certificate Management with kubeadm (Kubernetes) — Certificate expiry and management

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