# Pastebin RDfVaDm7
 _infrastructure_hosts: &controller_hosts
   infra01:
     ip: 172.17.221.11
   infra02:
     ip: 172.17.221.12
   infra03:
     ip: 172.17.221.13

 # nova hypervisors
 compute_hosts: &compute_hosts
   compute01:
     ip: 172.17.221.21
   compute02:
     ip: 172.17.221.22
   compute03:
     ip: 172.17.221.23