A Vagrantfile that has 4 servers public network

Vagrantfile_rbenv

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

# All Vagrant configuration is done below. The "2" in Vagrant.configure
# configures the configuration version (we support older styles for
# backwards compatibility). Please don't change it unless you know what
# you're doing.
Vagrant.configure(2) do |config|
  # The most common configuration options are documented and commented below.
  # For a complete reference, please see the online documentation at
  # https://docs.vagrantup.com.

  # Every Vagrant development environment requires a box. You can search for
  # boxes at https://atlas.hashicorp.com/search.
  config.vm.box = "ubuntu/trusty64"
  config.vm.box_check_update = false

  $updates = <<SCRIPT
apt-get update
apt-get -y install rbenv
SCRIPT

  config.vm.provision "shell",
                      inline: "mkdir -p /opt/scripts; chmod 777 /opt/scripts"

  config.vm.provision "shell",
                      inline: $updates
  ###############################
  # 4 Servers to demonstrate running remote com script
  ###############################

  config.vm.define "server1" do |server1|
    server1.vm.hostname = "tango"
    server1.vm.network "public_network", ip: "192.168.1.120"
  end

  config.vm.define "server2" do |server2|
    server2.vm.hostname = "charlie"
    server2.vm.network "public_network", ip: "192.168.1.130"
  end

  config.vm.define "server3" do |server3|
    server3.vm.hostname = "lima"
    server3.vm.network "public_network", ip: "192.168.1.140"
  end

  config.vm.define "server4" do |server4|
    server4.vm.hostname = "master"
    server4.vm.network "public_network", ip: "192.168.1.150"
  end
end