从清单中的组中打印主机名

Question

我有以下清单文件：

[web]
10.0.1.0

[db]
10.0.3.0

[frontend]
10.0.5.0

[X_all:children]
web
db
frontend

现在在我的剧本中：我正在尝试在名称行中的X_all组下打印主机名。

   -  name: "Copying the output of Registry run to local machine from {{ hostvars[item]['inventory_hostname'] }}"
      become: true
      become_user: "{{ login }}"
      fetch:
        src: /tmp/DeploymentRegistry.txt
        dest: /tmp/DeploymentRegistry-{{ inventory_hostname }}.txt
        flat: yes
      with_items:
        - "{{ groups['X_all'] }}"

是否甚至可以在名称行中添加主机名？ 我尝试将{{ hostvars[item]['inventory_hostname'] }}替换为inventory_hostname，但也无法正常工作。