Based on: http://www.sebastien-han.fr/blog/2013/04/22/play-with-ceph-vagrant-box/ This version, at least worked for me using the "2" format.

Vagrantfile for ceph

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

  config.vm.define :ceph do |role|
    role.vm.box = "big-ceph"
    role.vm.network :private_network, ip: "192.168.251.100"
    role.vm.hostname = "ceph"
  end

  config.vm.define :client do |role|
    role.vm.box = "ubuntu1304"
    role.vm.hostname = "ceph-client"
    role.vm.provision :shell, :path => "setup/ceph.sh"
    role.vm.network :private_network, ip: "192.168.251.101"
  end

end

Once you get onto the client...

sudo rados mkpool foo
sudo rados -p foo ls -
echo "Hello World" > abc.txt
sudo rados -p foo put foo.1 abc.txt
sudo rados -p foo ls -
sudo rados -p foo get foo.1 -