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CKA study material · question 401 of 1000

Which pipeline supplies the data behind kubectl top?

  1. The kubelet's cAdvisor endpoint, read by kubectl directly
  2. The resource metrics pipeline, served by metrics-server
  3. etcd's own metrics endpoint
  4. The full metrics pipeline, through a custom metrics adapter
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Answer: B. The resource metrics pipeline, served by metrics-server

metrics-server serves the metrics.k8s.io API, which feeds kubectl top and the Horizontal Pod Autoscaler.

Source: Tools for Monitoring Resources (Kubernetes) — Resource metrics pipeline

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