Add a vagrant file to let you run one role against a vagrant box.

vagrant/base/test_role/Vagrantfile

+MEMORY = 2048
+CPU_COUNT = 2
+
+Vagrant.configure("2") do |config|
+  config.vm.box     = "precise64"
+  config.vm.box_url = "http://files.vagrantup.com/precise64.box"
+
+  config.vm.network :private_network, ip: "192.168.33.20"
+
+  config.vm.provider :virtualbox do |vb|
+    vb.customize ["modifyvm", :id, "--memory", MEMORY.to_s]
+
+    # You can adjust this to the amount of CPUs your system has available
+    vb.customize ["modifyvm", :id, "--cpus", CPU_COUNT.to_s]
+
+    # Allow DNS to work for Ubuntu 12.10 host
+    # http://askubuntu.com/questions/238040/how-do-i-fix-name-service-for-vagrant-client
+    vb.customize ["modifyvm", :id, "--natdnshostresolver1", "on"]
+  end
+
+  config.vm.provision :ansible do |ansible|
+    # point Vagrant at the location of your playbook you want to run
+    ansible.playbook = "../../../playbooks/run_role.yml"
+    ansible.verbose = "extra"
+    ansible.extra_vars = { role: ENV['VAGRANT_ANSIBLE_ROLE'] }
+  end
+end

vagrant/base/test_role/ansible.cfg

+../../../playbooks/ansible.cfg
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