d9d652e867
Negative tests is when we request a gu Pod we know the system cannot fullfill - hence we expect rejection from the topology manager. Unfortunately, besides the trivial case of excessive cores (request more socket than a NUMA node provides) we cannot easily test the devices, because crafting a proper pod will require detailed knowledge of the hw topology. Let's consider a hypotetical two-node NUMA system with two PCIe busses, one per NUMA node, with a SRIOV device on each bus. A proper negative test would require two SRIOV device, that the system can provide but not on the same single NUMA node. Requiring for example three devices (one more than the system provides) will lead to a different, legitimate admission error. For these reasons we bootstrap the testing infra for the negative tests, but we add just the simplest one. Signed-off-by: Francesco Romani <fromani@redhat.com> |
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| WORKSPACE | ||
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.