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CKA study material · question 460 of 1000

Several etcd members have failed. Which two statements describe how they are replaced? Choose two.

  1. They are replaced one at a time
  2. They are all replaced at once to restore quorum
  3. Each failed member is removed before its replacement is added
  4. A snapshot must be restored on each new member
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Answer: A. They are replaced one at a time
C. Each failed member is removed before its replacement is added

etcd tolerates a minority of failures, and replacement is a two-step removal and addition done member by member.

Source: Operating etcd clusters for Kubernetes (Kubernetes) — Replacing a failed etcd member

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