all:
  children:
    managers:
      hosts:
        manager1:
          ansible_host: 10.0.4.71
        manager2:
          ansible_host: 10.0.4.72
        manager3:
          ansible_host: 10.0.4.73
    workers:
      hosts:
        worker1:
          ansible_host: 10.0.4.74
        worker2:
          ansible_host: 10.0.4.75