e7bdebd5f1
Automatic merge from submit-queue (batch tested with PRs 64974, 65009, 65018). 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>. daemon: add custom node indexer **What this PR does / why we need it**: <img width="863" alt="screen shot 2018-06-11 at 20 54 03" src="https://user-images.githubusercontent.com/44136/41279030-ad842020-6e2b-11e8-80d4-0a71ee415d30.png"> Based on this CPU profile, it looks like a lot of CPU cycles/cores are spend by retrieving a list of **all** pods in the cluster. On large clusters with multiple daemonset this might lead to locking the shared pod informer List() of every other controller that might need it or use it. The indexer in the PR will index the pods based on nodeName assigned for these pods. That means the amount of pods returned from the ByIndex() function is fairly small and the call should be fast. Additionally we can also use this index to check whether a node already run the pod without listing all pods in the cluster again. **Special notes for your reviewer**: **Release note**: ```release-note NONE ```
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.