For running nginx load balancer

Vagrntfile

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

# `vagrant ssh lb1` to shh on one machine
# `vagrant up web2` to start one machine
# `free -m` check memory size
# `ifconfig` check ip address
Vagrant.configure("2") do |config|
  config.vm.provider "virtualbox" do |v|
    v.memory = 1024
    v.cpus = 2
  end

  # load balancer 1
  config.vm.define "lb1" do |lb1|
    lb1.vm.box = "ubuntu/xenial64"
    lb1.vm.network "private_network", ip: "10.0.0.10"
    lb1.vm.provision "shell" do |s|
      s.args = ["lb1"]
      s.path = "https://gist.githubusercontent.com/changx03/bc23828b1ed1e140e491788bdc24a3ba/raw/7f87b7ae339e8fa21a7fd9578c521186001b25d9/provision_lb1.sh"
    end
  end
  
  # load ba lancer 1
  config.vm.define "web1" do |web1|
    web1.vm.box = "ubuntu/xenial64"
    web1.vm.network "private_network", ip: "10.0.0.11"
    web1.vm.provision "shell" do |s|
      s.args = ["web1"]
      s.path = "https://gist.githubusercontent.com/changx03/2929828f24787735e74a10f0b10ac404/raw/c2af07c2ff6355f047f23ed1bca02b16401d7f6f/provision_web.sh"
    end
  end
    
  # load balancer 3
  config.vm.define "web2" do |web2|
    web2.vm.box = "ubuntu/xenial64"
    web2.vm.network "private_network", ip: "10.0.0.12"
    web2.vm.provision "shell" do |s|
      s.args = ["web2"]
      s.path = "https://gist.githubusercontent.com/changx03/2929828f24787735e74a10f0b10ac404/raw/c2af07c2ff6355f047f23ed1bca02b16401d7f6f/provision_web.sh"
    end
  end
end