如何在Ansible剧本中获取--limit参数的值? [英] How to get value of --limit argument inside an Ansible playbook?

问题描述

在Ansible中，是否有可能在剧本中将参数的值添加到"--limit"选项?我想做的是这样的:

In ansible, is it possible to get the value of the argument to the "--limit" option within a playbook? I want to do is something like this:

---
- hosts: all
  remote user: root
  tasks:
  - name: The value of the --limit argument
    debug:
      msg: "argument of --limit is {{ ansible-limit-arg }}"

然后当我运行他的命令时:

Then when I run he command:

$ ansible-playbook getLimitArg.yaml --limit webhosts

我将得到以下输出:

argument of --limit is webhost

当然，我组成了"ansible-limit-arg"变量的名称，但是有没有有效的方法来做到这一点?我可以两次指定"webhosts"，第二次使用--extra-args，但这似乎是一种绕行的方式.

Of course, I made up the name of the variable "ansible-limit-arg", but is there a valid way of doing this? I could specify "webhosts" twice, the second time with --extra-args, but that seems a roundabout way of having to do this.

推荐答案

自Ansible 2.5起，您可以使用新的魔术变量ansible_limit访问该值，因此:

Since Ansible 2.5 you can access the value using a new magic variable ansible_limit, so:

- debug:
    var: ansible_limit

这篇关于如何在Ansible剧本中获取--limit参数的值?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！