Vagrantfile

# My helpers
#
def fwd_ports(config, ports=[])
  Array[*ports].each do |port|
    config.vm.network :forwarded_port, guest: port, host: port
  end
end

def share_folder(config, source, destiny)
  if File.directory? File.expand_path(source)
    config.vm.synced_folder source, destiny
  end
end

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

  config.vm.box = "arch64"
  config.vm.box_url = "http://vagrant.srijn.net/archlinux-x64-2014-01-07.box"

  config.vm.hostname = "development"
  config.ssh.forward_agent = true

  config.vm.provider :virtualbox do |vb|
    vb.customize ["modifyvm", :id, "--natdnshostresolver1", "on"]
    vb.customize ["modifyvm", :id, "--memory", "512"]
    vb.customize ["modifyvm", :id, "--cpus", "1"]
    vb.customize ["modifyvm", :id, "--cpuexecutioncap", "90"]
  end

  fwd_ports config, 3000..3010
  fwd_ports config, 3020..3021
  fwd_ports config, 8000..8010
  fwd_ports config, 9000..9010

  share_folder config, "~/Temp", "/home/vagrant/tmp"
end

Vagrantfile2

$ cat Vagrantfile
# -*- mode: ruby -*-
# vi: set ft=ruby :

# Vagrantfile API/syntax version. Don't touch unless you know what you're doing!
VAGRANTFILE_API_VERSION = "2"

Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
  config.vm.box = "ubuntu/trusty64"

  config.vm.network "private_network", ip: "10.0.0.10"

  config.ssh.forward_agent = true

  [3000, 5432, 9200].each do |port|
    config.vm.network "forwarded_port", guest: port, host: port
  end

  config.vm.provider "virtualbox" do |vb|
    vb.customize ["modifyvm", :id, "--memory", "2048"]
    vb.customize ["modifyvm", :id, "--natdnshostresolver1", "on"]
  end

  config.vm.provision "ansible" do |ansible|
    ansible.playbook = "ansible/playbook.yml"
  end
end