Kubernetes on Mac OS X 10.11 El Capitan with Docker Machine

k8s

#!/usr/bin/env bash

k8s(){
  local choice=$1
  K8S_VERSION=1.2.0

  if [ ! -f $HOME/.google-cloud-sdk/bin/kubectl ]; then
    echo "No kubectl bin exists! Install the bin to continue :)."
    return 1
  fi

  if [[ $choice == "up" ]]; then
    echo "-----Launching local k8s cluster-----"
    docker run \
      --volume=/:/rootfs:ro \
      --volume=/sys:/sys:ro \
      --volume=/var/lib/docker/:/var/lib/docker:rw \
      --volume=/var/lib/kubelet/:/var/lib/kubelet:rw \
      --volume=/var/run:/var/run:rw \
      --net=host \
      --pid=host \
      --privileged=true \
      -d \
      gcr.io/google_containers/hyperkube-amd64:v${K8S_VERSION} \
      /hyperkube kubelet \
      --containerized \
      --hostname-override="127.0.0.1" \
      --address="0.0.0.0" \
      --api-servers=http://localhost:8080 \
      --config=/etc/kubernetes/manifests \
      --cluster-dns=10.0.0.10 \
      --cluster-domain=cluster.local \
      --allow-privileged=true --v=2

    echo "-----Setting up SSH tunnel to Docker Machine-----"
    ssh -f -T -N -L 8082:127.0.0.1:8080 -i ~/.docker/machine/machines/dev/id_rsa docker@$(docker-machine ip dev) &> /dev/null

    echo "-----Waiting for k8s to initialize-----"
    until curl http://127.0.0.1:8082 &> /dev/null;
    do
      echo ...
      sleep 1
    done
    echo "-----Launched!-----"

    echo "-----Setting local dev variables-----"
    kubectl config set-cluster dev --server=http://127.0.0.1:8082
    kubectl config set-context dev --cluster=dev --user=default
    kubectl config use-context dev
    kubectl config set-credentials default --token=foobar

    echo "-----Ready for development!-----"

  elif [[ $choice == "down" ]]; then
    # Run twice due to issue with aufs debian driver
    echo "-----Removing all k8s containers-----"

    for run in {0..2}
    do
      docker ps -a | grep 'k8s_' | awk '{print $1}' | xargs docker rm -f
      docker ps -a | grep 'gcr.io/google_containers/hyperkube-amd64' | awk '{print $1}' | xargs docker rm -f
    done

    echo "-----Stopping SSH tunnel to Docker Machine-----"
    ps -ef | grep 'ssh.*8082' | grep -v grep | awk '{print $2}' | xargs kill -9

    rm ~/.kube/config

  elif [[ $choice == "restart" ]]; then
    k8s down
    k8s up

  else
    echo "Kubernetes dev environment"
    echo "Usage: k8s {up|down|restart}"
  fi
}

k8s $*

Based on http://www.charliedrage.com/kubernetes-dev-in-one-command