Kind Concepts

Internal

• Kind

Overview

kind is a tool for running local Kubernetes clusters using Docker container as cluster nodes. kind was primarily designed for testing Kubernetes itself, but may be used for local development or CI.

Cluster

A Kubernetes cluster can be created with kind create cluster. The "nodes" are implemented as Docker containers. Upon creation of a default cluster, it will report two nodes, "kind-control-plane" and "kind-worker". The corresponding Docker containers are:

CONTAINER ID   IMAGE              [...]         NAMES
3108457ff1b6   [...]/kind:v1.27.3-3966ac76      kind-worker
c90cb24cc040   [...]kind:v1.27.3-3966ac76       kind-control-plane
2702defb0752   [...]/registry:2                 kind-registry

What is a kind cluster? Where does it live?

"Node" Image

https://kind.sigs.k8s.io/docs/design/node-image

The “node” image is a Docker image for running nested containers, systemd, and Kubernetes components.