website/content/en/docs/reference/glossary/controller.md

20 lines
737 B
Markdown
Executable File

---
title: Controller
id: controller
date: 2018-04-12
full_link: /docs/admin/kube-controller-manager/
short_description: >
A control loop that watches the shared state of the cluster through the apiserver and makes changes attempting to move the current state towards the desired state.
aka:
tags:
- architecture
- fundamental
---
A control loop that watches the shared state of the cluster through the {{< glossary_tooltip text="apiserver" term_id="kube-apiserver" >}} and makes changes attempting to move the current state towards the desired state.
<!--more-->
Examples of controllers that ship with Kubernetes today are the replication controller, endpoints controller, namespace controller, and serviceaccounts controller.