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title: Reference
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This section of the Kubernetes documentation contains references.



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## API Reference

* [Glossary](/docs/reference/glossary/) -  a comprehensive, standardized list of Kubernetes terminology



* [Kubernetes API Reference](/docs/reference/kubernetes-api/)
* [One-page API Reference for Kubernetes {{< param "version" >}}](/docs/reference/generated/kubernetes-api/{{< param "version" >}}/)
* [Using The Kubernetes API](/docs/reference/using-api/) - overview of the API for Kubernetes.
* [API access control](/docs/reference/access-authn-authz/) - details on how Kubernetes controls API access
* [Well-Known Labels, Annotations and Taints](/docs/reference/kubernetes-api/labels-annotations-taints/)

## Officially supported client libraries

To call the Kubernetes API from a programming language, you can use
[client libraries](/docs/reference/using-api/client-libraries/). Officially supported
client libraries:

- [Kubernetes Go client library](https://github.com/kubernetes/client-go/)
- [Kubernetes Python client library](https://github.com/kubernetes-client/python)
- [Kubernetes Java client library](https://github.com/kubernetes-client/java)
- [Kubernetes JavaScript client library](https://github.com/kubernetes-client/javascript)
- [Kubernetes Dotnet client library](https://github.com/kubernetes-client/csharp)
- [Kubernetes Haskell Client library](https://github.com/kubernetes-client/haskell)

## CLI

* [kubectl](/docs/reference/kubectl/overview/) - Main CLI tool for running commands and managing Kubernetes clusters.
    * [JSONPath](/docs/reference/kubectl/jsonpath/) - Syntax guide for using [JSONPath expressions](https://goessner.net/articles/JsonPath/) with kubectl.
* [kubeadm](/docs/reference/setup-tools/kubeadm/) - CLI tool to easily provision a secure Kubernetes cluster.

## Components

* [kubelet](/docs/reference/command-line-tools-reference/kubelet/) - The primary *node agent* that runs on each node. The kubelet takes a set of PodSpecs and ensures that the described containers are running and healthy.
* [kube-apiserver](/docs/reference/command-line-tools-reference/kube-apiserver/) - REST API that validates and configures data for API objects such as  pods, services, replication controllers.
* [kube-controller-manager](/docs/reference/command-line-tools-reference/kube-controller-manager/) - Daemon that embeds the core control loops shipped with Kubernetes.
* [kube-proxy](/docs/reference/command-line-tools-reference/kube-proxy/) - Can do simple TCP/UDP stream forwarding or round-robin TCP/UDP forwarding across a set of back-ends.
* [kube-scheduler](/docs/reference/command-line-tools-reference/kube-scheduler/) - Scheduler that manages availability, performance, and capacity.  
  
## Scheduling

* [Scheduler Policies](/docs/reference/scheduling/policies)
* [Scheduler Profiles](/docs/reference/scheduling/config#profiles)


## Design Docs

An archive of the design docs for Kubernetes functionality. Good starting points are
[Kubernetes Architecture](https://git.k8s.io/community/contributors/design-proposals/architecture/architecture.md) and
[Kubernetes Design Overview](https://git.k8s.io/community/contributors/design-proposals).