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Merge pull request #31079 from championshuttler/kep 

Fix the description of the Summary API Source section
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Kubernetes Prow Robot 2021-12-25 17:43:14 -08:00 committed by GitHub
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content/en/docs/tasks/debug-application-cluster/resource-metrics-pipeline.md
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@ -67,8 +67,8 @@ Learn more about the metrics server in
[the design doc](https://github.com/kubernetes/community/blob/master/contributors/design-proposals/instrumentation/metrics-server.md).
### Summary API Source
The [Kubelet](/docs/reference/command-line-tools-reference/kubelet/) gathers stats at node, volume, pod and container level, and omits
them in the [Summary API](https://github.com/kubernetes/kubernetes/blob/7d309e0104fedb57280b261e5677d919cb2a0e2d/staging/src/k8s.io/kubelet/pkg/apis/stats/v1alpha1/types.go)
The [Kubelet](/docs/reference/command-line-tools-reference/kubelet/) gathers stats at node, volume, pod and container level, and emits their statistics in
the [Summary API](https://github.com/kubernetes/kubernetes/blob/7d309e0104fedb57280b261e5677d919cb2a0e2d/staging/src/k8s.io/kubelet/pkg/apis/stats/v1alpha1/types.go)
for consumers to read.
Pre-1.23, these resources have been primarily gathered from [cAdvisor](https://github.com/google/cadvisor). However, in 1.23 with the