Python 在ansible playbook for hosts中创建if…else语句的正确方法/语法

我尝试根据从命令行传入的环境变量“branch”创建一个条件逻辑，以针对不同的节点组运行

下面是我的代码示例branch是我传入的变量。如果branch=='test'，我将选择组'upgrade CI test'作为下一个任务的目标主机，test以外的任何内容都将保留变量“upgrade\u version”的值

但是，由于某些原因，我无法在测试组上执行我的“从升级机器删除旧脚本”游戏。我不确定设置变量是否正确？我是ansible的新手，如有任何提示，将不胜感激

---
- name: Set targeted hosts based on git branch
  hosts: localhost
  tasks:
  - name: Set hosts variable
    vars:
      targeted_host: "{{groups['upgrade-CI-test'] if branch == 'test' else upgrade_version }}"
    debug:
      var: targeted_host
- name: Remove old scripts from upgrade machine
  hosts:  targeted_host
  tasks:
  - name: Remove any old wrapper scripts
    win_file:
      path: D:\my_path
      state: absent

---

如果在playbook解析时定义了

分支

和

升级版本

变量，则可以执行以下操作：

---
- name: Remove old scripts from upgrade machine
  hosts: "{{ 'upgrade-CI-test' if branch == 'test' else upgrade_version }}"
  tasks:
    - name: Remove any old wrapper scripts
      win_file:
        path: D:\my_path
        state: absent

更新：如果您有多个重头戏，您可以使用

group_by

创建动态组并将其用于您的重头戏

---
- name: Make dynamic group
  hosts: "{{ 'upgrade-CI-test' if branch == 'test' else upgrade_version }}"
  tasks:
    - group_by:
        key: my_new_group

- name: Remove old scripts from upgrade machine
  hosts: my_new_group
  tasks:
    - name: Remove any old wrapper scripts
      win_file:
        path: D:\my_path
        state: absent

- name: Do some other stuff
  hosts: my_new_group
  tasks:
    - debug:
        msg: hello

---

是否可以在上层定义一个变量，类似于我在示例中所做的？原因是，如果我有多个重头戏，那么我必须更改所有重头戏的主机部分？更新我的回答在我将组['upgrade-CI-test']改为'upgrade-CI-test']后，对我来说效果很好。多谢各位