Ansible遍历由变量设置的库存组中的主机(Ansible iterate over hosts in inventory group set by variable)

Ansible遍历由变量设置的库存组中的主机(Ansible iterate over hosts in inventory group set by variable)

我的角色模板中有下一个代码段：

upstream portal { {% set nodes = groups["my_dev_cluster"] %} {% for node in nodes %} ...do something with nodes... {% endfor %} }

它运作良好。

但是，当我尝试像这样参数化库存组名称时：

upstream portal { {% set nodes = groups["{{cluster_name}}"] %} {% for node in nodes %} ...do something with nodes... {% endfor %} }

我收到了一个异常：

FAILED! => {"changed": false, "failed": true, "msg": "AnsibleUndefinedVariable: 'dict object' has no attribute '{{cluster_name}}'"}

这里， cluster_name - 是defaults部分中定义的简单字符串变量。

是否有可能对它进行参数化？

提前致谢！

I have the next snippet in my role template:

upstream portal { {% set nodes = groups["my_dev_cluster"] %} {% for node in nodes %} ...do something with nodes... {% endfor %} }

And it works well.

But when I try to parametrize inventory group name like this:

upstream portal { {% set nodes = groups["{{cluster_name}}"] %} {% for node in nodes %} ...do something with nodes... {% endfor %} }

I get an exception like:

FAILED! => {"changed": false, "failed": true, "msg": "AnsibleUndefinedVariable: 'dict object' has no attribute '{{cluster_name}}'"}

Here, cluster_name - is a simple string variable defined in defaults section.

Is it possible to parametrize it at all?

Thanks in advance!

最满意答案

你不需要{{...}}因为你已经在jinja上下文中（在这种情况下，是{% set ... %}块。只需写：

{% set nodes = groups[cluster_name] %}

You don't need {{...}} because you're already inside a jinja context (in this case, the {% set ... %} block. Just write:

{% set nodes = groups[cluster_name] %}