如何运行本地主机上的命令来为 Ansible 剧本定义变量？

Question

我是 Ansible 的新手，正在尝试解决问题。我在远程主机上有一个运行的简单剧本。彻底简化：

- hosts: all
  name: build render VM
  tasks:
    - copy:
        src: ./project_{{ project_id }}.yaml
        dest: /app/project.yaml
        owner: root

我想将 project_id 设置为此命令的输出，运行在本地主机上：gcloud config get-value project。理想情况下，我希望将其存储到可在整个剧本中使用的变量或事实中。我知道我可以在 ansible cmd 行上传递 project_id=$(...)，但我宁愿在剧本中自动设置它。

Answer 1

仅将给定的命令视为理所当然 returns id，没有其他。

将任务委派给本地主机：

- hosts: all
  name: build render VM
  tasks:
    - name: get project id
      command: gcloud config get-value project
      register: gcloud_cmd
      run_once: true
      delegate_to: localhost

    - name: set project id
      set_fact:
        project_id: "{{ gcloud_cmd.stdout }}"

    - copy:
        src: ./project_{{ project_id }}.yaml
        dest: /app/project.yaml
        owner: root

与 pipe lookup:

- hosts: all
  name: build render VM
  tasks:

    - name: set project id from localhost command
      set_fact:
        project_id: "{{ lookup('pipe', 'gcloud config get-value project') }}"
      run_once: true

    - copy:
        src: ./project_{{ project_id }}.yaml
        dest: /app/project.yaml
        owner: root

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