Kind Concepts
Internal
Overview
kind is a tool for running local Kubernetes clusters using Docker container "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 COMMAND CREATED STATUS PORTS NAMES 3108457ff1b6 [...]/kind:v1.27.3-3966ac76 "/usr/local/bin/entr…" 59 minutes ago Up 59 minutes kind-worker c90cb24cc040 [...]kind:v1.27.3-3966ac76 "/usr/local/bin/entr…" 59 minutes ago Up 59 minutes 127.0.0.1:6443->6443/tcp, 127.0.0.1:9999->30999/tcp kind-control-plane 2702defb0752 [...]/registry:2 "/entrypoint.sh /etc…" About an hour ago Up About an hour 127.0.0.1:5001->5000/tcp kind-registry
What is a kind cluster? Where does it live?
"Node" Image
The “node” image is a Docker image for running nested containers, systemd, and Kubernetes components.