Vagrant múltiples máquinas virtuales y múltiples carpetas sincronizadas

$ProjectName1 = 'server1'
$ProjectName2 = 'server2'
 
VAGRANTFILE_API_VERSION = "2"
 
Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
  config.vm.define "default" do |default|
    default.vm.box = "Centos-6.6-minimal-x86_64"
    default.vm.hostname = "#{$ProjectName1}"
    default.vm.network "forwarded_port", guest: 80, host: 8000
    default.vm.network :private_network, ip: "192.168.33.120"
    default.vm.provider "virtualbox" do |v|
      v.memory = 1024
      v.cpus = 2
    end
    default.vm.synced_folder "../sitio1", "/var/www/sitio1", id: "vagrant-root1",
      owner: "vagrant",
      group: "apache",
      mount_options: ["dmode=775,fmode=664"]
    default.vm.synced_folder "../sitio2", "/var/www/sitio2", id: "vagrant-root2",
      owner: "vagrant",
      group: "apache",
      mount_options: ["dmode=775,fmode=664"]
    default.vm.synced_folder "../sitio3", "/var/www/sitio3", id: "vagrant-root3",
      owner: "vagrant",
      group: "apache",
      mount_options: ["dmode=775,fmode=664"]
    default.vm.provision :shell, path: "bootstrap-centos.sh"
  end
  config.vm.define "web1" do |web1|
    web1.vm.box = "ubuntu/trusty64"
    web1.vm.hostname = "#{$ProjectName2}"
    web1.vm.network "forwarded_port", guest: 80, host: 8001
    web1.vm.network :private_network, ip: "192.168.33.121"
    web1.vm.provider "virtualbox" do |v|
      v.memory = 1024
      v.cpus = 2    
    end
    web1.vm.synced_folder "../sitio4", "/var/www/sitio4", id: "vagrant-root1",
      owner: "vagrant",
      group: "apache",
      mount_options: ["dmode=775,fmode=664"]
    web1.vm.synced_folder "../sitio5", "/var/www/sitio5", id: "vagrant-root2",
      owner: "vagrant",
      group: "apache",
      mount_options: ["dmode=775,fmode=664"]   
    web1.vm.provision :shell, path: "bootstrap-ubuntu.sh"
  end
end

config.vm.define "default" do |default|

default.vm.synced_folder "../sitio1", "/var/www/sitio1", id: "vagrant-root1",
      owner: "vagrant",
      group: "apache",
      mount_options: ["dmode=775,fmode=664"]

vagrant up web1

vagrant ssh web1

vagrant up default

vagrant ssh default