Platform-Specific Kubernetes Binaries #

This document provides details on how to build Kubernetes binaries and run kwokctl locally.

Overview #

When running kwokctl with binary runtime (kwokctl create cluster --runtime=binary), kwokctl will download Kubernetes binaries from dl.k8s.io/ www.downloadkubernetes.com and use them to create cluster. but that only works on Linux.

For Non-Linux #

Building Kubernetes Binaries and setting up kwokctl defaults to use them

KUBE_VERSION="v1.28.0"
SRC_DIR="${HOME}/.kwok/cache/kubernetes/${KUBE_VERSION}"
mkdir -p "${SRC_DIR}" && cd "${SRC_DIR}" &&
wget "https://dl.k8s.io/${KUBE_VERSION}/kubernetes-src.tar.gz" -O - | tar xz &&
make WHAT="cmd/kube-apiserver cmd/kube-controller-manager cmd/kube-scheduler" &&
cat <<EOF >> ~/.kwok/kwok.yaml
---
kind: KwokctlConfiguration
apiVersion: config.kwok.x-k8s.io/v1alpha1
options:
  kubeBinaryPrefix: $(pwd)/_output/local/bin/$(go env GOOS)/$(go env GOARCH)
---
EOF

The binaries will be located in ~/.kwok/cache/kubernetes/${KUBE_VERSION}/_output/local/bin/$(go env GOOS)/$(go env GOARCH).

Now, we can create cluster using kwokctl with binary runtime.

kwokctl create cluster \
  --runtime=binary