由于文件是 json 格式，你可以将文件导入到一个变量中，附加你想要的额外的 key:value 对，然后写回文件系统.

since the file is of json format, you could import the file to a variable, append the extra key:value pairs you want, and then write back to the filesystem.

这是一种方法:

---
- hosts: localhost
  connection: local
  gather_facts: false
  vars:

  tasks:
  - name: load var from file
    include_vars:
      file: /tmp/var.json
      name: imported_var

  - debug:
      var: imported_var

  - name: append more key/values
    set_fact:
      imported_var: "{{ imported_var | default([]) | combine({ 'hello': 'world' }) }}"

  - debug:
      var: imported_var

  - name: write var to file
    copy: 
      content: "{{ imported_var | to_nice_json }}" 
      dest: /tmp/final.json

更新:

随着 OP 的更新，代码应该适用于远程主机，在这种情况下，我们不能使用 included_vars 或查找.我们可以使用 slurp 模块.

as OP updated, the code should work towards remote host, in this case we cant use included_vars or lookups. We could use the slurp module.

新远程主机代码:

---
- hosts: greenhat
  # connection: local
  gather_facts: false
  vars:

  tasks:
  - name: load var from file
    slurp:
      src: /tmp/var.json
    register: imported_var

  - debug:
      msg: "{{ imported_var.content|b64decode|from_json }}"

  - name: append more key/values
    set_fact:
      imported_var: "{{ imported_var.content|b64decode|from_json | default([]) | combine({ 'hello': 'world' }) }}"

  - debug:
      var: imported_var

  - name: write var to file
    copy: 
      content: "{{ imported_var | to_nice_json }}" 
      dest: /tmp/final.json

希望能帮到你