<p>I searched a lot but didnt get a right answer, what is the difference between include and {{}} in helm.</p>

<p>ex : </p>

<pre><code>metadata:
  name: {{ include "cluster-dev.fullname" . }}
</code></pre>

<p>here can't it be like this</p>

<pre><code>metadata:
  name: {{ Values.nameOverride }}
</code></pre>

<p><code>include</code> is meant to be used with templates and not to simply output values.</p>
<p>According to the <a href="https://helm.sh/docs/howto/charts_tips_and_tricks/#using-the-include-function" rel="nofollow noreferrer">documentation</a></p>
<blockquote>
<p>To make it possible to include a template, and then perform an operation on that template’s output, Helm has a special include function:</p>
<p><code>{{ include &quot;toYaml&quot; $value | indent 2 }}</code></p>
<p>The above includes a template called <code>toYaml,</code> passes it <code>$value</code>, and then passes the output of that template to the <code>indent</code> function.</p>
</blockquote>
