# How does the Kubernetes controller manager work?

DevFeed: [How does the Kubernetes controller manager work?](<https://devfeed.tech/articles/how-does-the-kubernetes-controller-manager-work-19136.md>)

Original publisher: [Read original article](<https://learnkube.com/kubernetes-controller-manager-explained>)

Author: Daniele Polencic

Published: 2026-04-13T00:00:00Z

Content type: tutorial

Language: en

Sources: [Learnk8s](<https://devfeed.tech/sources/learnk8s.md>)

Topics: [Kubernetes](<https://devfeed.tech/topics/kubernetes.md>), [Deployment](<https://devfeed.tech/topics/deployment.md>)

Tags: [controllers](<https://devfeed.tech/tags/controllers.md>), [kubernetes](<https://devfeed.tech/tags/kubernetes.md>), [running](<https://devfeed.tech/tags/running.md>), [self-healing](<https://devfeed.tech/tags/self-healing.md>), [state](<https://devfeed.tech/tags/state.md>), [yaml](<https://devfeed.tech/tags/yaml.md>)

## AI overview

A tutorial explaining how the Kubernetes controller manager runs reconciliation loops that watch resources and move the cluster toward its desired state. It demonstrates how a Deployment and ReplicaSet replace a deleted Pod and contrasts declarative control with imperative scripting.

## Source excerpt

The controller manager runs the control loops that make Kubernetes self-healing. Learn how controllers watch resources, reconcile desired state, and drive the chain reaction from Deployment to running Pods.