您如何在ansible中获得执行角色的组名 [英] How do you get group name of the executing role in ansible

问题描述

我有一个用例，我需要在组中的所有主机中创建一个目录，其名称将是该组的名称.

I have a use case where I need to create a directory in all hosts in a group whose name will be the name of the group.

例如: 我创建一个动态清单文件，其输出格式为:

Eg : I create a dynamic inventory file with output of the form :

{
   "db": ["host1", "host2", "host3"],
   "logs": ["host2"],
   "misc": ["host4"]
}

我需要在组db的每个主机中创建一个名为db的目录，并在组日志的每个主机中创建一个名为log的目录.

I need to create a directory by the name db in every host of the group db and directory named log in every host of the group log.

到目前为止，我的剧本看起来像:

My playbook so far looks like :

- hosts: db
  tasks:
  - name: create db directory
    file: path=db state=directory

- hosts: logs
  tasks:
  - name: create logs directory
    file: path=logs state=directory

组数至少为10+.将来可能会增长. 我想写一些将来的小组可以轻松扩展和管理的东西.

The number of groups is at least 10+. This may grow in the future. I want to write something that will be easily extendable and manageable for the future groups.

我读到ansible没有为任务的组名提供默认事实或变量.我看到如果在主机中提供诸如groupname之类的变量，这将是最好的选择.

I read that ansible doesn't provide a default fact or variable for group name for the task. I see that this can be best done if I provide a variable like groupname in host.

是否有更好的解决方案可以使用循环而不是重复相同的任务?

Is there a better solution that could use looping instead of repeating the same task?

推荐答案

您可以使用魔术变量group_names.该变量是当前主机所在的所有组的列表(数组).有关更多信息，请参见

You can use the magic variable group_names. The variable is a list (array) of all the groups the current host is in. More information is available per the documentation

- hosts: all
  tasks:
  - name: create db directory
    file: 
      path: "{{ item }}" 
      state: directory
    with_items: "{{ group_names }}"

免责声明:未测试此代码.

Disclaimer: Did not test this code.

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