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CKA study material · question 603 of 1000

An application team wants to store a 4 MiB certificate bundle in a single Secret. What stops them?

  1. The 1 MiB per-Secret size limit
  2. The 12 KiB limit shared across a Pod's containers
  3. The 1000-entry limit on a Secret's data map
  4. Nothing; Secrets have no size limit
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Answer: A. The 1 MiB per-Secret size limit

Individual Secrets are capped at 1 MiB to stop one object exhausting API server and kubelet memory; the bundle would have to be split or held outside the API.

Source: Secrets (Kubernetes) — Working with Secrets › Size limit

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