inventory.yaml

   1 example.com:
   2   www:
   3     - www.example.com
   4     - nginx.example.net
   5   smtp:
   6     - mx1.example.com
   7
   8 example.org:
   9   smtp:
  10     - mx2.example.com
  11   xmpp:
  12     - example.com
  13     - conference.example.com
  14     - example.org