test:
  children:
    debian:
      hosts:
        172.19.134.64: {}
        172.19.134.54: {}
      vars:
        ansible_user: debian
    ubuntu:
      hosts:
        172.19.134.38: {}
      vars:
        ansible_user: ubuntu
  vars:
    ansible_ssh_private_key_file: ~/.ssh/id_rsa