Vagrantfile for Docker Swarm

deploy.sh

#!/usr/bin/env sh

set -x
set -e

: "prepare" && {
  yum -y update
  cat << 'EOF' |  tee /etc/yum.repos.d/docker.repo > /dev/null
[dockerrepo]
name=Docker Repository
baseurl=https://yum.dockerproject.org/repo/main/centos/7/
enabled=1
gpgcheck=1
gpgkey=https://yum.dockerproject.org/gpg
EOF
  yum clean all
}

: "Open port" && {
  systemctl stop firewalld
  systemctl disable firewalld
  yum -y install iptables-services
  systemctl start iptables
  systemctl enable iptables
  for i in 80 2377 7946 4789; do iptables -I INPUT -j ACCEPT -p tcp --dport $i; done;
  for i in 7946 4789; do iptables -I INPUT -j ACCEPT -p udp --dport $i; done;
  service iptables save

}

: "install docker" && {
  yum -y install docker-engine
}

: "start docker daemon" && {
  systemctl start docker
  systemctl enable docker
}

Vagrantfile

Vagrant.configure("2") do |config|

  (1..3).each do |i|
    config.vm.define "node#{i}" do |node|
      node.vm.hostname = "node#{i}.example.com"
      node.vm.box = "bento/centos-7.2"
      node.vm.network "private_network", ip: "192.168.33.1#{i}"
      node.vm.provision :shell do |shell|
        shell.path = "deploy.sh"
      end
    end
  end

end