Ansible，with_subelements和skip_missing不起作用 [英] Ansible, with_subelements and skip_missing does not work

问题描述

我有以下问题:
一个host_var定义了我的Nginx网站(摘录):

I have the following problem:
A host_var defining my nginx sites (excerpt):

nginx_sites:
- server:
    name: site1
    location1:
      config:
        name: "/"
        [...]
- server:
    name: site2
    location1:
      config:
        name: "/"
        [...]
    location2:
      config:
        name: "/secretspace"
        [...]
      htaccess:
        username:
          password: somepassword

在此示例中，我有2个站点.第二个有两个位置，第二个有一个名为"htaccess"的子元素.这就是我要用来创建相应的htaccess文件的内容.

In this example I have 2 sites. The second one has two locations where the second one has a subelement named "htaccess". This is what I want to use in order to create an corresponding htaccess file.

我尝试了这项艰巨的任务:

I tried this ansible task:

- name: Creating htaccess files if nessecary
  debug: msg="Huhu {{ item.0.name }}  {{ item.1 }}"
  with_subelements:
  - "{{ nginx_sites }}"
  - "htaccess"
  - flags:
    skip_missing: True

当nginx_sites中有一个名为"htaccess"元素的子元素时，此应该应当打印调试语句，如果不存在，则跳过该语句. 但是什么也没发生:

This should imho print a debug statement, when there is a subelement named "htaccess" element in nginx_sites or skip if it is not there. But nothing happens:

TASK [nginx : Creating htaccess files if nessecary]  ****************************
task path: /home/dakky/devzone/ansible-cfg-mgmt/roles/nginx/tasks/main.yml:65

PLAY RECAP *********************************************************************
hostname       : ok=1    changed=0    unreachable=0    failed=0   

你知道我在做什么错吗?

Any idea what I'm doing wrong here?

推荐答案

with_subelements用于迭代 list 子元素.
如果您修改输入数据以列出位置列表，而不是命名属性(location1，location2等):

with_subelements is used to iterate over list subelements.
If you modify your input data to make a list of locations instead of named properties (location1, location2, etc):

nginx_sites:
  - server:
      name: site1
      locations:
        - config:
            name: "/"
  - server:
      name: site2
      locations:
        - config:
            name: "/"
        - config:
            name: "/secretspace"
          htaccess:
            username:
              password: somepassword

然后，您可以迭代位置并选择已定义htaccess的位置:

Then you can iterate your locations and select those with htaccess defined:

- name: Creating htaccess files if nessecary
  debug: msg="Huhu {{ item.0.server.name }}  {{ item.1.htaccess }}"
  when: item.1.htaccess is defined
  with_subelements:
  - "{{ nginx_sites }}"
  - "server.locations"

还请注意，您应该为子元素指定完整路径".在您的原始示例中，htaccess不会匹配任何内容，但server.location2.htaccess会匹配任何内容(尽管出现错误，因为该项目不是列表).

Also note that you should specify "full path" for subelements. In your original example htaccess will never match anything, but server.location2.htaccess will (although rising error that this item is not a list).

这篇关于Ansible，with_subelements和skip_missing不起作用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！