带有 json_query 的 ansible 过滤器 [英] ansible filter with json_query

问题描述

我是这样写的:

- name: test for seed
  debug:
    var: hostvars|json_query("*.ansible_host")

它会打印每个主机.但这不会过滤主机:

And it prints every host. But this does not filter hosts:

- name: test for seed
  debug:
    var: hostvars|json_query("*[?ansible_host=='192.168.56.101']")

它只是打印一个空列表，而我确定这个主机存在.这是相关的库存行:

It just prints an empty list, while I'm sure this host exists. This is the relevant inventory line:

[build-servers]
build-server ansible_host=192.168.56.101

我做错了什么吗?

推荐答案

您应该过滤结果列表，而不是原始哈希:* |[?ansible_host=='192.168.168.21']

You should filter resulting list, not original hash: * | [?ansible_host=='192.168.168.21']

附言您通常不想使用 debug 模块的 var 选项来打印 Jinja 语句，而是使用 msg.

P.S. you usually don't want to use var option of debug module to print Jinja statements, use msg instead.

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