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CKA study material · question 87 of 1000

What are the default certificate lifetimes in a kubeadm cluster? Choose two.

  1. The CA certificate is valid for one year
  2. Client certificates are valid for one year
  3. The CA certificate is valid for ten years
  4. Client certificates are valid for 90 days
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Answer: B. Client certificates are valid for one year
C. The CA certificate is valid for ten years

kubeadm issues client certificates valid for a year and a CA certificate valid for ten.

Source: Certificate Management with kubeadm (Kubernetes) — Choosing certificate validity period

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