028af0970f
If no potential victims could be found, there is no need to evaluate the node again, since its state didn't change. It's safe to return and thus prevent scheduling from running the filter plugins again. NOTE: A node that is filtered out by filter plugins could pass the filter plugins if there is a change on that node, i.e. pods termination on that node. Previously, this could be either caught by the normal `schedule` or `preempt` (pods are terminated when the preemption logic tries to find the nodes and re-evaluate the filter plugins.) Actually, this shouldn't be taken care by the preemption, consider the routine of `schedule` is always running when the interval is "zero", let `schedule` take care of it will release `preempt` from something irrelevant with the `preemption`. Due to above reason, couple of testcase as well as the logic of checking the existence of victim pods are removed as it will never happen after the change. Signed-off-by: Dave Chen <dave.chen@arm.com>
Kubernetes
Kubernetes is an open source system for managing containerized applications across multiple hosts. It provides 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 your company 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 use Kubernetes code as a library in other applications, see the list of published components.
Use of the k8s.io/kubernetes module or k8s.io/kubernetes/... packages as libraries is not supported.
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.
mkdir -p $GOPATH/src/k8s.io
cd $GOPATH/src/k8s.io
git clone https://github.com/kubernetes/kubernetes
cd 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.