a2ca66d280
Fixes two issues with how the pod worker refactor calculated the pods that admission could see (GetActivePods() and filterOutTerminatedPods()) First, completed pods must be filtered from the "desired" state for admission, which arguably should be happening earlier in config. Exclude the two terminal pods states from GetActivePods() Second, the previous check introduced with the pod worker lifecycle ownership changes was subtly wrong for the admission use case. Admission has to include pods that haven't yet hit the pod worker, which CouldHaveRunningContainers was filtering out (because the pod worker hasn't seen them). Introduce a weaker check - IsPodKnownTerminated() - that returns true only if the pod is in a known terminated state (no running containers AND known to pod worker). This weaker check may only be called from components that need admitted pods, not other kubelet subsystems. This commit does not fix the long standing bug that force deleted pods are omitted from admission checks, which must be fixed by having GetActivePods() also include pods "still terminating". |
||
|---|---|---|
| .github | ||
| api | ||
| build | ||
| CHANGELOG | ||
| cluster | ||
| cmd | ||
| docs | ||
| hack | ||
| LICENSES | ||
| logo | ||
| pkg | ||
| plugin | ||
| staging | ||
| test | ||
| third_party | ||
| vendor | ||
| .generated_files | ||
| .gitattributes | ||
| .gitignore | ||
| CHANGELOG.md | ||
| code-of-conduct.md | ||
| CONTRIBUTING.md | ||
| go.mod | ||
| go.sum | ||
| LICENSE | ||
| Makefile | ||
| Makefile.generated_files | ||
| OWNERS | ||
| OWNERS_ALIASES | ||
| README.md | ||
| SECURITY_CONTACTS | ||
| SUPPORT.md | ||
Kubernetes (K8s)
Kubernetes, also known as K8s, 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 K8s
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 K8s
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.