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CKA study material · question 454 of 1000

Why should etcd snapshot files be encrypted?

  1. etcd refuses to restore unencrypted files
  2. The API server verifies the encryption on restore
  3. They hold all cluster state, including sensitive data
  4. Encryption compresses the snapshot
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Answer: C. They hold all cluster state, including sensitive data

A snapshot contains the whole cluster state and critical information, so the files are kept encrypted.

Source: Operating etcd clusters for Kubernetes (Kubernetes) — Backing up an etcd cluster

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