e49f44d89c
Automatic merge from submit-queue (batch tested with PRs 41146, 41486, 41482, 41538, 41784) client-gen: independent scheme for clientsets This PR adds a clientset internal scheme instead of using `pkg/api.Scheme`. **The clientset API stays the same.** In detail: - introduce a scheme for each clientset, i.e. do not use `pkg/api.Scheme+Registry+Codec+ParameterCodecs`. This makes it easier to compose client-go's clientset (which is rewritten in `staging/copy.sh` and therefore hardcoded to use `k8s.io/client-go/pkg/api.Scheme+Registry+Codecs+ParameterCodecs`) with third-party clientsets (kube-aggregator, openshift, federation) which are not rewritten using `copy.sh` as all of them are self-contained and therefore relocatable. This fixes https://github.com/kubernetes/kubernetes/pull/41403/files#diff-76edfb07dee54ff7ddeda25c33c10d29R81 and prepares client-gen for use in OpenShift. - register types into the clientset scheme via `AddToScheme` for versioned clientsets. This decouples the client-go clients from announce+registration (internal clients continue using announce+registry and apigroup installers). This reduces complexity for client-go, possibly remove the necessity for the announce+register machinery for many use-cases, maybe even to delete it mid-term. - port federation and testgroup `install/install.go` to `announced.GroupMetaFactory` in order to have a proper `Install.Install(...)` func for registration. With the first change it's easy to add the types of one clientset to the scheme of the other using the `clientset/scheme.AddToScheme` method. This allows to use cross-clientset `runtime.RawExtensions`: ```golang import ( "k8s.io/client-go/kubernetes" clientsetscheme "k8s.io/client-go/kuberentes/scheme" aggregatorclientsetscheme "k8s.io/kube-aggregator/pkg/client/clientset_generated/clientset/scheme" ) kclientset, _ := kubernetes.NewForConfig(c) aggregatorclientsetscheme.AddToScheme(clientsetscheme.Scheme) ``` Kubernetes types with a `RawExtension` can en/decode aggregator types after this. TODO: - [x] fix fake clientsets - [x] get the `*Options` types registered correctly for core, compare DO-NOT-MERGE commit. - [x] get prefered version right in internal client. Do we need all versions registered in the internal client to support negotiation? - [x] run `staging/copy.sh` and run tests: https://github.com/kubernetes/kubernetes/pull/41744 - ~~[ ] fixup usage through-out the code-base~~ - **Follow-up**: move `import_known_versions.go` files somewhere such that import of the `api.Scheme` package automatically installs the apigroups. It looks like we depended on the import fo the clientset for this purpose. |
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Kubernetes
Introduction
Kubernetes is an open source system for managing containerized applications across multiple hosts, providing basic mechanisms for deployment, maintenance, and scaling of applications. Kubernetes is hosted by the Cloud Native Computing Foundation (CNCF).
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.
Are you ...
- Interested in learning more about using Kubernetes?
- See our documentation on kubernetes.io.
- Try our interactive tutorial.
- Take a free course on Scalable Microservices with Kubernetes.
- Interested in developing the core Kubernetes code base, developing tools using the Kubernetes API or helping in anyway possible? Keep reading!
Code of Conduct
The Kubernetes community abides by the CNCF code of conduct. Here is an excerpt:
As contributors and maintainers of this project, and in the interest of fostering an open and welcoming community, we pledge to respect all people who contribute through reporting issues, posting feature requests, updating documentation, submitting pull requests or patches, and other activities.
Community
Do you want to help shape the evolution of technologies that are container-packaged, dynamically-scheduled and microservices-oriented?. If you are a company, you should consider joining the CNCF. For details about who's involved in CNCF and how Kubernetes plays a role, read the announcement. For general information about our community, see the website community page.
- Join us on social media (Twitter, Google+) and read our blog.
- Ask questions and help answer them on Slack or Stack Overflow.
- Attend our key events (kubecon, cloudnativecon, weekly community meeting).
- Join a Special Interest Group (SIG).
Contribute
If you're interested in being a contributor and want to get involved in developing Kubernetes, get started with this reading:
- The community expectations
- The contributor guidelines
- The Kubernetes Developer Guide
You will then most certainly gain a lot from joining a SIG, attending the regular hangouts as well as the community meeting.
If you have an idea for a new feature, see the Kubernetes Features repository for a list of features that are coming in new releases as well as details on how to propose one.
Building Kubernetes for the impatient
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
If you are less impatient, head over to the developer's documentation.
Support
While there are many different channels that you can use to get hold of us (Slack, Stack Overflow, Issues, Forums/Mailing lists), you can help make sure that we are efficient in getting you the help that you need.
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. We don't bite!