Ansible，如何在主机清单中定义列表? [英] Ansible, how to define a list in host inventory?

问题描述

我有一个剧本，我想在我的主机文件中定义一个字符串列表.

I have a playbook and I want to define a list of strings in my hosts file.

这是我的主机文件:

[dashboard]
1.2.3.4 dashboard_domain=test site_domain=['one','two','foo', 'bar'] 

这是我尝试使用列表文档编写的剧本:

---
- hosts: dashboard
  gather_facts: False
  remote_user: ubuntu
  become: yes

  tasks:

    - name: ping
      ping:

    - debug: 
        msg: "Domain: {{dashboard_domain}}"

    - debug: 
        msg: "Site: {{ item }}"
      with_items: "{{site_domain}}"

但是，使用 ansible-playbook -i hosts ping.yml 运行此剧本会导致此错误:

However running this playbook with ansible-playbook -i hosts ping.yml causes this error:

任务:[调试] ***********************************************************************
致命:[1.2.3.4] => with_items 需要一个列表或一个集合

TASK: [debug ] ****************************************************************
fatal: [1.2.3.4] => with_items expects a list or a set

这似乎是将定义的列表从主机文件传输到剧本的问题，因为直接在剧本中定义列表是有效的:

This seems to be an issue of transferring the defined list from the host file to the playbook because defining the list directly in the playbook works:

---
- hosts: dashboard
  gather_facts: False
  remote_user: ubuntu
  become: yes
  vars:
    site_domain: ['one','two','foo', 'bar'] 
  tasks:

    #### APPLY HTTP-AUTH ####
    - name: ping
      ping:

    - debug: 
        msg: "Domain: {{dashboard_domain}}"

    - debug: 
        msg: "Site: {{ item }}"
      with_items: "{{site_domain}}"

推荐答案

只需引用变量值:

[dashboard]
1.2.3.4 dashboard_domain=test site_domain="['one','two','foo', 'bar']"

似乎在 INI 格式的清单文件的情况下，如果变量值以未加引号的 [ 开头并将其作为字符串传递，则 Ansible 不会解析该变量值.

It seems in case of INI-formatted inventory files, Ansible does not parse the variable value if it starts with an unquoted [ and passes it as a string.

关于您的示例:如果您确实有空间，我不确定为什么您在读取库存文件时没有收到 expected key=value 错误.

Regarding your example: I'm not sure why you're not getting an expected key=value error on reading the inventory file, if you really have a space inside.

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