This is the culmination of all the previous commits which made this last move less dramatic. More tests and cleanup commits will follow. Background, for future archaeologists: Service has (had) an "outer" and "inner" REST handler. This is because of how we do IP and port allocations synchronously, but since we don't have API transactions, we need to roll those back in case of a failure. Both layers use the same `Strategy`, but the outer calls into the inner, which causes a lot of complexity in the code (including an open-coded partial reimplementation of a date-unknown snapshot of the generic REST code) and results in `Prepare` and `Validate` hooks being called twice. The "normal" REST flow seems to be: ``` mutating webhooks generic REST store Create { cleanup = BeginCreate BeforeCreate { strategy.PrepareForCreate { dropDisabledFields } strategy.Validate strategy.Canonicalize } createValidation (validating webhooks) storage Create cleanup AfterCreate Decorator } ``` Service (before this series of commits) does: ``` mutating webhooks svc custom Create { BeforeCreate { strategy.PrepareForCreate { dropDisabledFields } strategy.Validate strategy.Canonicalize } Allocations inner (generic) Create { cleanup = BeginCreate BeforeCreate { strategy.PrepareForCreate { dropDisabledFields } strategy.Validate strategy.Canonicalize } createValidation (validating webhooks) storage Create cleanup AfterCreate Decorator } } ``` After this: ``` mutating webhooks generic REST store Create { cleanup = BeginCreate Allocations BeforeCreate { strategy.PrepareForCreate { dropDisabledFields } strategy.Validate strategy.Canonicalize } createValidation (validating webhooks) storage Create cleanup AfterCreate Rollback allocations on error Decorator } ``` |
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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.