使用多个嵌套主机变量时,匹配单个自定义主机清单变量

时间:2020-05-21 18:38:20

标签: ansible

我正在尝试遍历清单文件中的匹配主机,其中每个主机都有某些变量,但是每个主机可能具有与其关联的多个嵌套变量,如下所示:

库存文件:

[support]
myhost1 application_role="['role1', 'role2']" team="['ops', 'dev']"
myhost2 application_role="['role1']" team="['ops', 'sales']"

我的目标是尝试仅将文件传递给与客户变量键“ team”等于值“ sales”匹配的主机。

我正在测试此测试任务,只是为了获得一些响应,但是正如您从输出中看到的那样,它正在跳过所有这些,因为它没有捕获嵌套变量,它似乎是将变量作为一个完整的字符串读取而不是分裂?

测试任务:

- name: Loop through example servers and show the hostname, team attribute
  debug:
    msg: "team attribute of {{ item }} is {{ hostvars[item]['team'] }}"
  when: hostvars[item]['team'] == "sales"
  loop: "{{ groups['support'] }}"

输出:

PLAY [support] ************************************************************************

TASK [ssh_key_push : Loop through example servers and show the hostname, team attribute msg=team attribute of {{ item }} is {{ hostvars[item]['team'] }}] ***
skipping: [myhost1] => (item=myhost1) 
skipping: [myhost1] => (item=myhost2) 
skipping: [myhost1]
skipping: [myhost2] => (item=myhost1) 
skipping: [myhost2] => (item=myhost2) 
skipping: [myhost2]

我不确定如何从主机清单中读取单个嵌套变量。

谢谢!

1 个答案:

答案 0 :(得分:1)

<div id="app">
  <div id="box-container">
    <div class="box" id="box-four">4</div>
  </div>
  <button id="button-insert-div">show or hide box</button>
  <button id="button-delete-element">delete element</button>
</div>

此表达式正在比较一个列表,例如

when: hostvars[item]['team'] == "sales"

转换为单个字符串值team: - ops - sales 。这将始终返回false。

您想做的是check if the list contains that value。如该链接中所述,Jinja2提供了sales测试,而ansbile提供了in,在某些情况下可以简化编写过程。这两个版本是等效的:

contains
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