该任务包括一个带有未定义变量的选项。错误是：“项目”未定义

【问题标题】：The task includes an option with an undefined variable. The error was: 'item' is undefined该任务包括一个带有未定义变量的选项。错误是：“项目”未定义
【发布时间】：2020-06-04 08:41:25
【问题描述】：

当我运行以下 playbook 时出现以下错误。

fatal: [localhost]: FAILED! => {"msg": "The task includes an option with an undefined variable. The error was: 'item' is undefined\n\nThe error appears to have been in '/home/thor/user.yml': line 8, column 9, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n  tasks:\n      - name: create users\n        ^ here\n"}


---
- name: create user
  hosts: localhost
  become: true
  become_user: root
  become_method: sudo
  tasks:
      - name: create users
        user:
           name: "{{ item.name }}"
           state: present
      - debug:
           var: "{{ item.message }}"
        with_items:
              - { name: amit, message: amit_done }
              - { name: ankit, message: ankit_done }

这在我评论调试模块时有效。

【问题讨论】：

标签： ansible

【解决方案1】：

loop 不能执行多个任务。如果您愿意，请将消息放入 label。例如

  tasks:
    - name: create users
      user:
        name: "{{ item.name }}"
        state: present
      loop:
        - {name: amit, message: amit_done}
        - {name: ankit, message: ankit_done}
      loop_control:
        label: "{{ item.message }}"

或者，如果您确实需要在 loop 中执行更多任务，可以在 loop 中 include_tasks。例如，创建一个包含所有任务的文件

shell> cat create_users.yml
- name: create users
  user:
    name: "{{ item }}"
- debug:
    msg: "{{ item }} done"

并将其包含在 loop

  tasks:
    - include_tasks: create_users.yml
      loop:
        - amit
        - ankit

【讨论】：