Production-Grade Container Scheduling and Management
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David Porter 039a848274 test: Add e2e node test to check for unknown pods
Unknown pods are pods which are unknown pods to the kubelet, but are still
running in the container runtime. If kubelet detects a pod which is not in
the config (i.e. not present in API-server or static pod), but running as
detected in container runtime, kubelet should aggressively terminate the pod.

This situation can be encountered if a pod is running, then kubelet is
stopped, and while stopped, the manifest is deleted (by force deleting the
API pod or deleting the static pod manifest), and then restarting the
kubelet. Upon restart, kubelet will see the pod as running via the container
runtime, but it will not be present in the config, thus making the pod a
"unknown pod". Kubelet should then proceed to terminate these unknown pods.

Add two tests that ensure that unknown pods will be terminated (1)
static pods and (2) API pods. The test will start a pod, stop the
kubelet, force delete the pod (by deleting the manifest or force
deleting the pod), and then restarting the kubelet. The container
runtime is then queried to ensure the containers are terminated by
kubelet.

Signed-off-by: David Porter <david@porter.me>
2023-02-03 23:04:45 -08:00
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CHANGELOG Merge pull request #114694 from yanggangtony/fix-typo 2023-01-26 12:06:26 -08:00
cluster etcd: Update to version 3.5.7 2023-01-27 17:24:00 +01:00
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LICENSES vendor: removed unused dep github.com/elazarl/goproxy 2023-01-18 18:31:50 +00:00
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staging Merge pull request #113534 from pacoxu/ControllerManagerLeaderMigration 2023-02-01 09:35:09 -08:00
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.golangci.yaml kubeadm: fix gocritic lint errors 2023-01-08 11:23:26 +08:00
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Kubernetes (K8s)

CII Best Practices


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.

Community Meetings

The Calendar has the list of all the meetings in Kubernetes community in a single location.

Adopters

The User Case Studies website has real-world use cases of organizations across industries that are deploying/migrating to Kubernetes.

Governance

Kubernetes project is governed by a framework of principles, values, policies and processes to help our community and constituents towards our shared goals.

The Kubernetes Community is the launching point for learning about how we organize ourselves.

The Kubernetes Steering community repo is used by the Kubernetes Steering Committee, which oversees governance of the Kubernetes project.

Roadmap

The Kubernetes Enhancements repo provides information about Kubernetes releases, as well as feature tracking and backlogs.