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Merge pull request #50932 from yguo0905/stats-cadvisor

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Automatic merge from submit-queue (batch tested with PRs 50932, 49610, 51312, 51415, 50705)

Implement StatsProvider interface using cadvisor

Ref: https://github.com/kubernetes/kubernetes/issues/46984

- This PR changes the `StatsProvider` interface in `pkg/kubelet/server/stats` so that it can provide container stats from either cadvisor or CRI, and the summary API can consume the stats without knowing how they are provided.
- The `StatsProvider` struct in the newly added package `pkg/kubelet/stats` implements part of the `StatsProvider` interface in `pkg/kubelet/server/stats`.
- In `pkg/kubelet/stats`,
    - `stats_provider.go`: implements the node level stats and provides the entry point for this package.
    - `cadvisor_stats_provider.go`: implements the container level stats using cadvisor.
    - `cri_stats_provider.go`: implements the container level stats using CRI.
    - `helper.go`: utility functions shared by the above three components.
- There should be no user visible behaviors change in this PR.
- A follow up PR will implement the StatsProvider interface using CRI.

**Release note**:
```
None
```

/assign @yujuhong 
/assign @WIZARD-CXY
This commit is contained in:
Kubernetes Submit Queue
2017-08-29 01:17:29 -07:00
committed by GitHub
parent c071a77156 f9767d2f71
commit c27cdb11a9
32 changed files with 2722 additions and 1615 deletions
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@@ -279,6 +279,7 @@ pkg/kubelet/server/portforward
pkg/kubelet/server/remotecommand
pkg/kubelet/server/stats
pkg/kubelet/server/streaming
pkg/kubelet/stats
pkg/kubelet/status
pkg/kubelet/status/testing
pkg/kubelet/sysctl