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Add the functionality to support `CreateOrMutateConfigMap` and `MutateConfigMap`. * `CreateOrMutateConfigMap` will try to create a given ConfigMap object; if this ConfigMap already exists, a new version of the resource will be retrieved from the server and a mutator callback will be called on it. Then, an `Update` of the mutated object will be performed. If there's a conflict during this `Update` operation, retry until no conflict happens. On every retry the object is refreshed from the server to the latest version. * `MutateConfigMap` will try to get the latest version of the ConfigMap from the server, call the mutator callback and then try to `Update` the mutated object. If there's a conflict during this `Update` operation, retry until no conflict happens. On every retry the object is refreshed from the server to the latest version. Add unit tests for `MutateConfigMap` * One test checks that in case of no conflicts, the update of the given ConfigMap happens without any issues. * Another test mimics 5 consecutive CONFLICT responses when updating the given ConfigMap, whereas the sixth try it will work.
Kubernetes
Kubernetes is an open source system for managing containerized applications across multiple hosts; providing 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 you are a company that 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 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.
go get -d k8s.io/kubernetes
cd $GOPATH/src/k8s.io/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.