c29450eb00
The idempotency.go (perhaps not so accurately named) contains API calls that kubeadm does against an API server using client-go. Some users seem to have unstable setups where for unknown reasons the API server can be unavailable or refuse to respond as expected. Use PollUntilContextTimeout in all exported functions to ensure such API calls are all retry-able. NOTE: The context passed to PollUntilContextTimeout is not propagated in the polled function. Instead the poll function creates it's own context 'ctx := context.Background()', this is to avoid breaking expectations on the side of the callers, that expect a certain type of error and not "context timeout" errors. Additional changes: - Make all context.TODO() -> context.Background() - Update all unit tests and make sure during testing the retry interval and timeout are short. Test coverage of idempotency.go is at ~97%. - Remove the TestMutateConfigMapWithConflict test. It does not contribute much, because conflict handling is done at the API, server side, not on the side of kubeadm. This simulating this is not needed. |
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| Makefile | ||
| OWNERS | ||
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| README.md | ||
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| 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 the 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.
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 the 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.