- hosts: '*'
  sudo: yes
  gather_facts: false
  # this is default variables, they will be overwritten by resource one
  vars:
    keys_dir: /vagrant/.ssh
    private_key: /vagrant/.ssh/id_rsa
    passphrase: ''
  tasks:
    - shell: mkdir -p {{keys_dir}}
    - stat: path={{private_key}}
      register: key
    - shell: ssh-keygen -t rsa -f {{private_key}} -N ""
      when: key.stat.exists == False