Improved bedrock-ansible Vagrantfile

Vagrantfile

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

Vagrant.require_version '>= 1.5.1'

Vagrant.configure('2') do |config|
  config.vm.box = 'roots/bedrock'
  
  # Required for NFS to work, pick any local IP
  config.vm.network :private_network, ip: '192.168.50.5'
  config.vm.hostname = 'example.dev'

  if !Vagrant.has_plugin? 'vagrant-hostsupdater'
    puts 'vagrant-hostsupdater missing, please install the plugin:'
    puts 'vagrant plugin install vagrant-hostsupdater'
  else
    # If you have multiple sites/hosts on a single VM
    # uncomment and add them here
    #config.hostsupdater.aliases = %w(site2.dev)
  end

  # adjust paths relative to Vagrantfile
  # Use NFS for shared folders for better performance
  config.vm.synced_folder '../example.dev', '/srv/www/example.dev/current', nfs: true 

  config.vm.provision :ansible do |ansible|
    # adjust paths relative to Vagrantfile
    ansible.playbook = './site.yml'
    ansible.groups = {
      'web' => ['default'],
      'development' => ['default']
    }
    ansible.extra_vars = {
      ansible_ssh_user: 'vagrant',
      user: 'vagrant'
    }
    ansible.sudo = true
  end

  
  config.vm.provider "virtualbox" do |vb|
    host = RbConfig::CONFIG['host_os']
    # Give VM 1/4 system memory & access to all cpu cores on the host
    if host =~ /darwin/
      cpus = `sysctl -n hw.ncpu`.to_i
      # sysctl returns Bytes and we need to convert to MB
      mem = `sysctl -n hw.memsize`.to_i / 1024 / 1024 / 4
    elsif host =~ /linux/
      cpus = `nproc`.to_i
      # meminfo shows KB and we need to convert to MB
      mem = `grep 'MemTotal' /proc/meminfo | sed -e 's/MemTotal://' -e 's/ kB//'`.to_i / 1024 / 4
    else # sorry Windows folks, I can't help you
      cpus = 2
      mem = 1024
    end
    vb.customize ["modifyvm", :id, "--memory", mem]
    vb.customize ["modifyvm", :id, "--cpus", cpus]
    
    # Fix for slow external network connections
    vb.customize ['modifyvm', :id, '--natdnshostresolver1', 'on']
    vb.customize ['modifyvm', :id, '--natdnsproxy1', 'on']
  end
end