Docker Swarm Cluster

Vagrantfile

# -*- mode: ruby -*-
# vi: set ft=ruby :

MACHINES = {
  'node01' => '192.168.56.101',
  'node02' => '192.168.56.102'
}.freeze

Vagrant.configure(2) do |config|
  config.vm.box = 'ubuntu/trusty64'

  config.vm.provider 'virtualbox' do |provider|
    provider.memory = 512
    provider.cpus = 1
  end

  MACHINES.each do |name, ip|
    config.vm.define(name) do |host|
      host.vm.hostname = "#{name}.dev"
      host.vm.network 'private_network', ip: ip

      host.vm.provision :shell, inline: %(
        #!/bin/bash
        export DEBIAN_FRONTEND=noninteractive

        sudo apt-get install apt-transport-https ca-certificates curl software-properties-common
        sudo apt-get install linux-image-extra-$(uname -r) linux-image-extra-virtual
        sudo curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
        sudo apt-key fingerprint 0EBFCD88
        sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
        sudo apt-get update
        sudo apt-get install -y docker-ce
        sudo usermod -a -G docker ${USER}
        docker version
      )

      if name == MACHINES.keys.first
        host.vm.provision :shell, inline: "docker swarm init --advertise-addr #{ip}"
        host.vm.provision :shell, inline: 'docker swarm join-token -q worker > /vagrant/.vagrant/swarm-token'
      else
        host.vm.provision :shell, inline: "docker swarm join --token `cat /vagrant/.vagrant/swarm-token` #{MACHINES.values.first}:2377"
      end
    end
  end
end