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Automatic merge from submit-queue (batch tested with PRs 46033, 46122, 46053, 46018, 45981) Command tree and exported env in kubectl plugins This is part of `kubectl` plugins V1: - Adds support to several env vars passing context information to the plugin. Plugins can make use of them to connect to the REST API, access global flags, get the path of the plugin caller (so that `kubectl` can be invoked) and so on. Exported env vars include - `KUBECTL_PLUGINS_DESCRIPTOR_*`: the plugin descriptor fields - `KUBECTL_PLUGINS_GLOBAL_FLAG_*`: one for each global flag, useful to access namespace, context, etc - ~`KUBECTL_PLUGINS_REST_CLIENT_CONFIG_*`: one for most fields in `rest.Config` so that a REST client can be built.~ - `KUBECTL_PLUGINS_CALLER`: path to `kubectl` - `KUBECTL_PLUGINS_CURRENT_NAMESPACE`: namespace in use - Adds support for plugins as child of other plugins so that a tree of commands can be built (e.g. `kubectl myplugin list`, `kubectl myplugin add`, etc) **Release note**: ```release-note Added support to a hierarchy of kubectl plugins (a tree of plugins as children of other plugins). Added exported env vars to kubectl plugins so that plugin developers have access to global flags, namespace, the plugin descriptor and the full path to the caller binary. ``` @kubernetes/sig-cli-pr-reviews |
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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
If you are less impatient, 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.