<p>For example,</p>
<pre class="lang-yaml prettyprint-override"><code>result: &quot;{{ service.control.0.ipa }},{{ management.control.0.ipa }}&quot;
</code></pre>
<p>gives</p>
<pre class="lang-yaml prettyprint-override"><code>result: 192.168.101.81,10.100.78.81
</code></pre>

CC BY-SA 4.0
2022-09-18T17:59:50.873Z
And when pointed out, it's obvious. thanks!
Freejack
CC BY-SA 4.0
2022-09-18T04:33:23.210Z
2022-09-18T04:33:23.210Z
Vladimir Botka
<p>I'm trying to access a specific value in a list of data and it fails, can't find the ipa variable.</p>
<p>Here is a short bit of the boulder.yaml vars file, yes, dual homed. Network configurations require it:</p>
<pre><code>service:
  control:
  - name: &quot;bldr0cuomdev01&quot;
    ipa: 192.168.101.81
  - name: &quot;bldr0cuomdev02&quot;
    ipa: 192.168.101.82
management:
  control:
  - name: &quot;bldr0cuomdev11&quot;
    ipa: 10.100.78.81
  - name: &quot;bldr0cuomdev12&quot;
    ipa: 10.100.78.82
</code></pre>
<p>And I'm trying to use the following (much shorter) jinja2 template (nodes.j2) to create a file:</p>
<pre><code>{{ service.control.ipa[0] }},{{ management.control.ipa[0] }}
</code></pre>
<p>I'm basically getting the error that ipa is not found.</p>
<p>Since there are two sections, having it be a loop isn't going to work but if I test just the service section as a loop, it does work. So it's able to find ipa, but my method isn't valid for some reason.</p>
<pre><code>{% for s in service.control %}
{{ s.ipa }}
{% endfor %}
</code></pre>
<p>I saw another suggestion of using .0 instead of a bracketed array</p>
<pre><code>{{ service.control.ipa.0 }},{{ management.control.ipa.0 }}
</code></pre>
<p>And also tried using a quoted zero</p>
<pre><code>{{ service.control.ipa['0'] }},{{ management.control.ipa['0'] }}
</code></pre>
<p>But neither work. Searching on the 'net is common enough that my search is not finding anything relevant.</p>

<ansible><jinja>
How to access elements of a variable in ansible
Freejack
# How to access elements of a variable in ansible

(Asked by: username_0 on 2022-09-18)

I'm trying to access a specific value in a list of data and it fails, can't find the ipa variable.
Here is a short bit of the boulder.yaml vars file, yes, dual homed. Network configurations require it:
service:
  control:
  - name: "bldr0cuomdev01"
    ipa: 192.168.101.81
  - name: "bldr0cuomdev02"
    ipa: 192.168.101.82
management:
  control:
  - name: "bldr0cuomdev11"
    ipa: 10.100.78.81
  - name: "bldr0cuomdev12"
    ipa: 10.100.78.82

And I'm trying to use the following (much shorter) jinja2 template (nodes.j2) to create a file:
{{ service.control.ipa[0] }},{{ management.control.ipa[0] }}

I'm basically getting the error that ipa is not found.
Since there are two sections, having it be a loop isn't going to work but if I test just the service section as a loop, it does work. So it's able to find ipa, but my method isn't valid for some reason.
{% for s in service.control %}
{{ s.ipa }}
{% endfor %}

I saw another suggestion of using .0 instead of a bracketed array
{{ service.control.ipa.0 }},{{ management.control.ipa.0 }}

And also tried using a quoted zero
{{ service.control.ipa['0'] }},{{ management.control.ipa['0'] }}

But neither work. Searching on the 'net is common enough that my search is not finding anything relevant.

**Tags:** ansible, jinja


---

## 1 answers

### Answer by username_1 on 2022-09-18. Score: 2

For example,
result: "{{ service.control.0.ipa }},{{ management.control.0.ipa }}"

gives
result: 192.168.101.81,10.100.78.81

> **Comments:**
> **username_0**: And when pointed out, it's obvious. thanks!  

---

