backend:
  hosts:
    nfs:
      ansible_host: 192.168.50.225
      ansible_user: root
      ansible_become_method: su
    swarm:
      ansible_host: 192.168.50.220
      ansible_user: user
      ansible_become_method: sudo
    firewall:
      ansible_host: 192.168.50.170
      ansible_user: root
      ansible_become_method: su

dev:
  hosts:
    dev301:
      ansible_host: 192.168.50.71
      ansible_user: user
      ansible_become_method: sudo
    dev302:
      ansible_host: 192.168.1.10
      ansible_user: user
      ansible_become_method: sudo
    dev303:
      ansible_host: 192.168.50.30
      ansible_user: user
      ansible_become_method: sudo

virtual:
  children:
    backend:
    dev: