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CKA study material · question 700 of 1000

A RuntimeClass declares an overhead of 120Mi memory, and a Pod using it requests 256Mi across its containers. How much memory does the scheduler require on the node?

  1. 256Mi; overhead is charged to the node, not the Pod
  2. 376Mi
  3. 120Mi, since overhead replaces the container requests
  4. 256Mi, with overhead counted only against quota
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Answer: B. 376Mi

Pod overhead is added to the sum of the container requests when the scheduler decides whether the Pod fits, and it also counts toward resource quota and Pod cgroup sizing.

Source: Pod Overhead (Kubernetes) — Pod Overhead (overview)

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