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CKA study material · question 902 of 1000

Which component collects per-container resource metrics before the kubelet exposes them?

  1. metrics-server, running as a DaemonSet
  2. kube-state-metrics
  3. Node Problem Detector
  4. cAdvisor, which is part of the kubelet
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Answer: D. cAdvisor, which is part of the kubelet

cAdvisor is built into the kubelet and gathers container metrics, which the kubelet then serves on /metrics/resource and /stats for metrics-server to scrape.

Source: Resource metrics pipeline (Kubernetes) — Resource metrics pipeline (overview)

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