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Update cri-container-stats documentation 

Update the cri-container-stats documentation with more recent status
info. Particularly, clarify that the option to consume CRI stats has
been implemented, and link to the code that determines the consumption
option.
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mattjmcnaughton 2019-05-05 15:46:22 -04:00
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commit f47fc3ee18
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contributors/devel/sig-node/cri-container-stats.md
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@ -115,7 +115,10 @@ behind it.*
## Status
The container metrics calls are added to CRI in Kubernetes 1.7, but Kubelet does not
yet use it to gather metrics from the runtime. We plan to enable Kubelet to
optionally consume the container metrics from the API in 1.8.
The container metrics calls were added to CRI in Kubernetes 1.7, but Kubelet did not
yet use it to gather metrics from the runtime. In Kubernetes 1.8, Kubelet was
given the option to [consume the container metrics using CRI
stats](https://github.com/kubernetes/kubernetes/pull/51557). See the
`pkg/kubelet/cadvisor.go#UsingLegacyCadvisorStats`
[function](https://github.com/kubernetes/kubernetes/blob/master/pkg/kubelet/cadvisor/util.go#L73)
for more information on how Kubelet determines the proper metrics source.