# k3d

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## k3s in docker

k3s is the lightweight Kubernetes distribution by Rancher: [rancher/k3s](https://github.com/rancher/k3s)

This repository is based on @zeerorg's [zeerorg/k3s-in-docker](https://github.com/zeerorg/k3s-in-docker), reimplemented in Go by @iwilltry42 in [iwilltry42/k3d](https://github.com/iwilltry42/k3d), which is now [rancher/k3d](https://github.com/rancher/k3d).

## Requirements

- [docker](https://docs.docker.com/install/)

## Install

You have several options there:

- use the install script to grab the latest release: 
  - wget: `wget -q -O - https://raw.githubusercontent.com/rancher/k3d/master/install.sh | bash`
  - curl: `curl -s https://raw.githubusercontent.com/rancher/k3d/master/install.sh | bash`
- Grab a release from the [release tab](https://github.com/rancher/k3d/releases) and install it yourself.
- Via go: `go install github.com/rancher/k3d`

or...

## Build

1. Clone this repo, e.g. via `go get -u github.com/rancher/k3d/releases`
2. Inside the repo run
   - `make` to build for your current system
   - `go install` to install it to your `GOPATH`
   - `make build-cross` to build for all systems

## Usage

Check out what you can do via `k3d help`

Example Workflow: Create a new cluster and use it with `kubectl`

1. `k3d create` to create a new single-node cluster (docker container)
2. `export KUBECONFIG=$(k3d get-kubeconfig)` to make `kubectl` to use the kubeconfig for that cluster
3. execute some commands like `kubectl get pods --all-namespaces`
4. `k3d delete` to delete the default cluster

## TODO

- [x] Use the docker client library instead of commands
- [x] Improve cluster state management
- [x] Add install script
- [ ] Use [sirupsen/logrus](https://github.com/sirupsen/logrus) for prettier logs