k3d - k3s in docker

A lightweight alternative to KinD for local development.

Install and run

  1. You need docker installed.

  2. Just run:

    curl -s https://api.github.com/repos/zeerorg/k3s-in-docker/releases/latest | grep "browser_download_url.*k3d\"" | cut -d : -f 2,3 | tr -d \" | wget -qi - -O k3d && ./k3d create

  3. If you have rust toolchain installed, you can install it using: cargo install k3d && k3d create

Advantages over KinD

  1. Supports arm64 and armhf
  2. Fast boot time
  3. Supports starting and stopping without losing previous state
  4. Lightweight compared to KinD

Usage

Normal flow:

  1. k3d create
  2. export KUBECONFIG=$(k3d get-kubeconfig)
  3. kubectl get pods --all-namespaces
  4. If you want to delete the cluster do: kubectl delete

If port 6443 is occupied you can specify a different port in first step: k3d create -p 10001. This will create a docker container named k3s_default with port 10001 exposed.

You can specify a different name for cluster with k3s create -n <name>, but then keep in mind to do k3d get-kubeconfig -n <name> when getting kubeconfig.

```text k3d 0.1.0 Rishabh Gupta r.g.gupta@outlook.com Run k3s in Docker

USAGE: k3d [SUBCOMMAND]

FLAGS: -h, --help Prints help information -V, --version Prints version information

SUBCOMMANDS: check-tools Check docker running create Create a single node k3s server delete Delete cluster get-kubeconfig get kubeconfig.yaml location help Prints this message or the help of the given subcommand(s) list List all clusters start Start a stopped cluster stop Stop a cluster ```