--- #YAML start syntax (optional) 
centos7:
  hosts:
    bh7: 
      ansible_ssh_host: bh7.dmz.nausch.org
        
centos8:
  hosts:
    ansible:
      ansible_ssh_host: 10.0.0.40
    demo:
      ansible_ssh_host: 10.0.0.190
      ansible_ssh_port: 10022
... #YAML ende syntax (optional)