Ansible concat vars to string [英] Ansible concat vars to string

问题描述

我花了一天的大部分时间试图解决这个问题，但到目前为止都失败了.我正在构建一些剧本来自动化 Splunk 中的功能，并尝试从库存组 E.G. 转换主机列表.

I've spent most of the day trying to solve this problem and have thus far failed. I am building some playbooks to automate functions in Splunk, and am attempting to convert a list of hosts from an inventory group E.G.

[search_head]
1.2.3.4
5.6.7.8

我对剧集调试输出的预期(期望)结果应该是:https://1.2.3.4:8089, https://5.6.7.8:8089

My expected (desired) result from the debug output of the play should be: https://1.2.3.4:8089, https://5.6.7.8:8089

我正在尝试通过对正在运行的主机运行以下剧本来完成此操作:

I am attempting to complete this by running the following playbook against a running host:

---
  - name: Build search head list to initialize the captain
    hosts: search_head
    remote_user: ansible
    vars:
      inventory_file: ./inventory-ec2-single-site
      search_head_uri: "{{ lookup('template', './bootstrap-sh-deployer.j2') }}"
pre_tasks:
  - include_vars: 
      dir: 'group_vars'
      extensions:
        - yml
        - yaml
tasks:
  - name: dump array
    debug:
        msg: "{{ search_head_uri }}"`

使用模板bootstrap-sh-deployer.j2:

{%- set search_head_uri = [] %}
{% for host in groups['search_head'] %}
    {%- if search_head_uri.append("https://{{ host }}:8089") %} 
{%- endif %}
{%- if not loop.last %}, {% endif -%}
{%- endfor %}

然而，当前播放返回 search_head_uri: ", " 这告诉我循环正在运行，但 {{ host }} 没有解析.

However, the current play returns search_head_uri: ", " which tells me that the loop is running, but {{ host }} is not resolving.

推荐答案

打开 Jinja2 表达式或语句后，您应该使用 Jinja2 语法.您不能嵌套它们(即您不能在 {% %} 内使用 {{ }}).

Once you open a Jinja2 expression or a statement you should use Jinja2 syntax. You cannot nest them (i.e. you can't use {{ }} inside {% %}).

{%- if search_head_uri.append("https://" + host + ":8089") %}

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