f5ab6d5ad4
Equivalence cache for CheckNodeConditionPred becomes invalid when Node.Spec.Unschedulable changes. This can happen even if Node.Status.Conditions does not change, so move the logic around. This logic is covered by integration test "test/integration/scheduler".TestUnschedulableNodes but equivalence cache is currently skipped when test pods have no OwnerReference. Add benchmark for equivalence hashing. Change equivalence hash function. This changes the equivalence class hashing function to use as inputs all the Pod fields which are read by FitPredicates. Before we used a combination of OwnerReference and PersistentVolumeClaim info, which was a close approximation. The new method ensures that hashing remains correct regardless of controller behavior. The PVCSet field can be removed from equivalencePod because it is implicitly included in the Volume list. Tests are now broken. Move equivalence class hash code. This moves the equivalence hashing code from algorithm/predicates/utils.go to core/equivalence_cache.go. In the process, making the hashing function and hashing function factory both injectable dependencies is removed. Fix equivalence cache hash tests. Co-authored-by: Jonathan Basseri <misterikkit@google.com> Co-authored-by: Harry Zhang <resouer@gmail.com> |
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README.md
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.