Ansible vars_prompt 角色

Question

我有一套Ansible playbooks 和主要的 yml 文件是这样的

- hosts: all 
  roles:
    - common
    - install_nginx

我想在触发剧本时添加确认消息。我试过这个但没有用

- hosts: all
  vars_prompt:
    - name: CONFIRM
      prompt: Just to confirm you will install stuff
  tasks:
    - fail: no deployment this time
      when: CONFIRM != 'yes'
  roles:
    - common
    - install_nginx

我如何使用 vars_prompt在这种情况下，无需修改每个 role ?

Answer 1

如果您使用 vars_prompt 查看运行剧本的输出你会看到 fail任务在其他角色之后运行。这在Ansible docs for playbooks and roles中也有提到:

If the play still has a ‘tasks’ section, those tasks are executed after roles are applied.

正如上面的文档还提到，如果您想强制任务在任何角色之前运行，那么您可以使用 pre_tasks .

因此，要让您的确认风格提示您可以简单地执行以下操作:

- hosts: all
  vars_prompt:
    - name: CONFIRM
      prompt: Just to confirm you will install stuff
  pre_tasks:
    - fail: no deployment this time
      when: CONFIRM != 'yes'
  roles:
    - common
    - install_nginx