bfdd94c6a0
Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>. Fix kubelet PVC stale metrics **What this PR does / why we need it**: Volumes on each node changes, we should not only add PVC metrics into gauge vector. It's better use a collector to collector metrics from internal stats. Currently, if a PV (bound to a PVC `testpv`) is attached and used by node A, then migrated to node B or just deleted from node A later. `testpvc` metrics will not disappear from kubelet on node A. After a long running time, `kubelet` process will keep a lot of stale volume metrics in memory. For these dynamic metrics, it's better to use a collector to collect metrics from a data source (`StatsProvider` here), like [kube-state-metrics](https://github.com/kubernetes/kube-state-metrics) scraping metrics from kube-apiserver. **Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*: Fixes https://github.com/kubernetes/kubernetes/issues/57686 **Special notes for your reviewer**: **Release note**: ```release-note Fix kubelet PVC stale metrics ``` |
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Kubernetes
Kubernetes is an open source system for managing containerized applications across multiple hosts; providing basic mechanisms for deployment, maintenance, and scaling of applications.
Kubernetes builds upon a decade and a half of experience at Google running production workloads at scale using a system called Borg, combined with best-of-breed ideas and practices from the community.
Kubernetes is hosted by the Cloud Native Computing Foundation (CNCF). If you are a company that wants to help shape the evolution of technologies that are container-packaged, dynamically-scheduled and microservices-oriented, consider joining the CNCF. For details about who's involved and how Kubernetes plays a role, read the CNCF announcement.
To start using Kubernetes
See our documentation on kubernetes.io.
Try our interactive tutorial.
Take a free course on Scalable Microservices with Kubernetes.
To start developing Kubernetes
The community repository hosts all information about building Kubernetes from source, how to contribute code and documentation, who to contact about what, etc.
If you want to build Kubernetes right away there are two options:
You have a working Go environment.
$ go get -d k8s.io/kubernetes
$ cd $GOPATH/src/k8s.io/kubernetes
$ make
You have a working Docker environment.
$ git clone https://github.com/kubernetes/kubernetes
$ cd kubernetes
$ make quick-release
For the full story, head over to the developer's documentation.
Support
If you need support, start with the troubleshooting guide, and work your way through the process that we've outlined.
That said, if you have questions, reach out to us one way or another.