Ansible中可用的hostvars在Zuul中无法访问，求替代方案

问题背景 #

使用include_vars从多个.yaml文件加载变量时，本地Ansible Playbook运行正常，但在Zuul环境中失效。推测原因是Zuul出于安全限制，禁止直接访问hostvars，导致原方案中依赖hostvars的变量聚合逻辑无法执行。

原Playbook代码 #

- hosts: localhost

  vars:
    files: "{{ query('varnames', 'files_[0-9]+')|
               map('extract', hostvars.localhost, 'files')|
               flatten }}"

  tasks:
    - find:
        paths: "{{ playbook_dir }}"
        recurse: true
        patterns: test.yaml
      register: files_from_dirs

    - include_vars:
        file: "{{ item }}"
        name: "{{ name }}"
      loop: "{{ files_from_dirs.files|map(attribute='path')|list }}"
      loop_control:
        extended: true
      vars:
        name: "files_{{ ansible_loop.index }}"

    - debug:
        var: files

替代实现方案 #

以下两种方案均无需依赖hostvars，通过自定义字典管理加载的变量，适配Zuul环境：

方案1：合并所有变量到单一自定义字典 #

直接将所有文件的变量内容合并到一个全局字典中，无需生成多个独立变量：

- hosts: localhost
  vars:
    all_files_vars: {}

  tasks:
    - find:
        paths: "{{ playbook_dir }}"
        recurse: true
        patterns: test.yaml
      register: files_from_dirs

    - include_vars:
        file: "{{ item }}"
        name: "_temp_var"
      loop: "{{ files_from_dirs.files|map(attribute='path')|list }}"
      register: loaded_vars

    - set_fact:
        all_files_vars: "{{ all_files_vars | combine(item._temp_var) }}"
      loop: "{{ loaded_vars.results }}"

    - debug:
        var: all_files_vars

方案2：按文件索引存储到自定义字典子键 #

保留原方案的独立变量标识逻辑，将每个文件的变量存入自定义字典的对应子键中，便于区分来源：

- hosts: localhost
  vars:
    files_dict: {}

  tasks:
    - find:
        paths: "{{ playbook_dir }}"
        recurse: true
        patterns: test.yaml
      register: files_from_dirs

    - include_vars:
        file: "{{ item }}"
        name: "_temp_var"
      loop: "{{ files_from_dirs.files|map(attribute='path')|list }}"
      loop_control:
        extended: true
      register: loaded_vars

    - set_fact:
        files_dict: "{{ files_dict | combine({ 'files_' ~ ansible_loop.index: item._temp_var }) }}"
      loop: "{{ loaded_vars.results }}"
      loop_control:
        extended: true

    - debug:
        var: files_dict
    # 如需扁平化所有变量内容，可执行以下步骤
    - set_fact:
        files_flattened: "{{ files_dict.values() | flatten }}"
    - debug:
        var: files_flattened

方案优势 #

• 完全规避hostvars依赖，适配Zuul的安全限制
• 变量集中管理，避免全局变量污染
• 逻辑清晰，便于调试和维护

内容的提问来源于stack exchange，提问作者Eduard Florinescu