00df26a985
Previously, it was possible for reusable CPUs and reusable devices (i.e. those previously consumed by init containers) to not be reused by subsequent init containers or app containers if the TopologyManager was enabled. This would happen because hint generation for the TopologyManager was not considering the reusable devices when it made its hint calculation. As such, it would sometimes: 1) Generate a hint for a differnent NUMA node, causing the CPUs and devices to be allocated from that node instead of the one where the reusable devices live; or 2) End up thinking there were not enough CPUs or devices to allocate and throw a TopologyAffinity admission error This patch fixes this by ensuring that reusable CPUs and devices are considered as part of TopologyHint generation. This frunctionality is difficult to unit test since it spans multiple components, but an e2e test will be added in a subsequent patch to test this functionality.
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.