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Reinstate PodAndContainerStatsFromCRI docs 

Previous changes lost this documentation; reinstate something similar.
pull/37980/head
Tim Bannister 2022-11-19 14:46:56 +00:00
parent e09bd95daf
commit 51057189b0
1 changed files with 11 additions and 0 deletions
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content/en/docs/tasks/debug/debug-cluster/resource-metrics-pipeline.md
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@ -270,6 +270,17 @@ Beginning with `metrics-server` 0.6.x, `metrics-server` queries the `/metrics/re
kubelet endpoint, and not `/stats/summary`. kubelet endpoint, and not `/stats/summary`.
{{< /note >}} {{< /note >}}
### Summary metrics API source {#summary-api-source}
By default, Kubernetes fetches node summary metrics data using an embedded By default, Kubernetes fetches node summary metrics data using an embedded
[cAdvisor](https://github.com/google/cadvisor) that runs with in the kubelet. [cAdvisor](https://github.com/google/cadvisor) that runs with in the kubelet.
### Summary API data via CRI {#pod-and-container-stats-from-cri}
{{< feature-state for_k8s_version="v1.23" state="alpha" >}}
If you enable the `PodAndContainerStatsFromCRI`
[feature gate](/docs/reference/command-line-tools-reference/feature-gates/) in your
cluster, and you use a container runtime that supports statistics access via
{{< glossary_tooltip term_id="cri" text="Container Runtime Interface">}} (CRI), then
the kubelet fetches Pod- and container-level metric data using CRI, and not via cadvisor.