ansible with_items 列表列表正在变平 [英] ansible with_items list of lists is flattening

问题描述

我正在尝试使用 ansible 遍历列表列表以安装一些软件包.但是 {{item}} 返回子列表中的每个元素而不是子列表本身.我有一个 yaml 文件，它来自 ansible 外部的清单列表，它看起来像这样:

I'm trying to use ansible to loop over a list of lists to install some packages. But {{item}} is returning every element in the sub lists rather than the sublist itself. I have a yaml file which come from a manifest list from outside ansible and it looks like this:

---
modules:
 - ['module','version','extra']
 - ['module2','version','extra']
 - ['module3','version','extra']

我的任务如下所示:

task:
 - include_vars: /path/to/external/file.yml
 - name: install modules
   yum: name={{item.0}} state=installed
   with_items: "{{ modules }}"

当我运行时，我得到:

fatal: [localhost]: FAILED! => {"failed": true, "msg": "ERROR! int object has no element 0"}

当我尝试时:

- debug: msg="{{item}}"
  with_items: "{{module}}"

它打印每个元素(模块、版本、额外等)，而不仅仅是子列表(这是我所期望的)

it prints every element (module, version, extra, and so on), not just the sublist (which is what I would expect)

推荐答案

不幸的是，这是预期的行为.请参阅此关于 with_tems 和嵌套列表的讨论

Unfortunately, this is the intended behavior. Please see this discussion on with_tems and nested lists

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