whack-a-service/Ansible_DEMO/hosts.yml

target-machines:
  hosts:
    demo-geobal01:
      ansible_host: 192.168.1.1
      machine_hostname: "demo-geobal01"
    demo-geobal02:
      ansible_host: 192.168.1.2
      machine_hostname: "demo-geobal02"