Vagrantfile with proxy support, custom chef version installation using vagrant-omnibus, vagrant-cachier for caching packages, vagrant-butcher for managing vagrant chef client and node lifecycle, vagrant-berkshelf for pulling opscode cookbooks.

Berksfile

site :opscode

cookbook 'ntp'

plugins.json

[
  {"vagrant-omnibus": "1.1.0"},
  {"vagrant-cachier": "0.3.2"},
  {"vagrant-butcher": "1.0.1"},
  {"vagrant-berkshelf": "1.3.3"}
]

Vagrantfile

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

# vagrant plugin install bindler
# vagrant plugin bundle
# vagrant up
Vagrant.configure("2") do |config|
  config.vm.box = "precise64"
  config.vm.box_url = "http://files.vagrantup.com/precise64.box"

  config.vm.provider :virtualbox do |vb|
    vb.customize ["modifyvm", :id, "--natdnshostresolver1", "on"] # Use host resolver mechanism for DNS requests, see http://www.virtualbox.org/manual/ch09.html#nat-adv-dns
    vb.customize ["modifyvm", :id, "--natdnsproxy1", "on"] # Proxy guest dns requests to host, see http://www.virtualbox.org/manual/ch09.html#nat-adv-dns
  end

  config.vm.network :private_network, ip: "192.168.50.2"

  config.vm.synced_folder ENV["PROJECT_HOME"] || ".", "/opt/app", :nfs => true # Use nfs shares for better performance, see https://coderwall.com/p/uaohzg
  config.cache.auto_detect = true if config.cache.respond_to?(:cache) # Cache packages from apt/yum/rubygems/rvm etc, see https://github.com/fgrehm/vagrant-cachier
  config.omnibus.chef_version = :latest if config.omnibus.respond_to?(:chef_version) # Use latest version of chef provisioner, see https://github.com/schisamo/vagrant-omnibus
  config.ssh.forward_agent = true # Enable ssh forwarding

  config.vm.define :application do |app_config|
    proxy = ENV['APP_HTTP_PROXY']
    if proxy
      puts "Using proxy #{proxy}"
      app_config.vm.provision :shell, :inline => "cat <<EOF | sudo tee /etc/profile.d/proxy.sh
export HTTP_PROXY=http://#{proxy}/
export HTTPS_PROXY=$http_proxy
export NO_PROXY=localhost,127.0.0.1
EOF" # Setup proxy.sh bash profile.d script so that it is automatically set.
    end
    app_config.vm.provision :chef_client do |chef|
      chef.log_level = :debug
      chef.chef_server_url = ENV['CHEF_SERVER_URL']
      chef.validation_key_path = ENV['VALIDATION_KEY_PATH'] || 'validation.pem'
      chef.environment = ENV['VAGRANT_ENVIRONMENT'] || '_default'
      chef.node_name = "#{ENV['USER']}_vagrant" # Enforce vagrant chef client naming convention so that they can be easily filtered/identified.
      chef.run_list = (ENV['run_list'] || 'recipe[ntp]').split(',')
      chef.https_proxy = "http://#{proxy}/" if proxy # Use http proxy for chef provisioning, used in remote_file etc
      chef.http_proxy = "http://#{proxy}/" if proxy # Use http(s) proxy for chef provisioning
    end if ENV['CHEF_SERVER_URL']

    app_config.vm.provision :chef_solo do |chef|
      chef.log_level = :debug
      chef.run_list = (ENV['run_list'] || 'recipe[ntp]').split(',')
      chef.https_proxy = "http://#{proxy}/" if proxy # Use http proxy for chef provisioning, used in remote_file etc
      chef.http_proxy = "http://#{proxy}/" if proxy # Use http(s) proxy for chef provisioning
    end unless ENV['CHEF_SERVER_URL']
    app_config.vm.network :forwarded_port, guest: 80, host: 8080
  end
end