<p>How can I obtain just a set of Kubernetes yaml files filled in with default Helm chart parameters, so that I can use kubectl apply -f ./manifests to run the required service?</p>

<p>You can use the <a href="https://helm.sh/docs/helm/helm_template/" rel="noreferrer"><code>helm template</code></a> command:</p>
<blockquote>
<p>Render chart templates locally and display the output.</p>
<p>Any values that would normally be looked up or retrieved in-cluster
will be faked locally. Additionally, none of the server-side testing
of chart validity (e.g. whether an API is supported) is done.</p>
<p><code>helm template [NAME] [CHART] [flags]</code></p>
</blockquote>
<p>e.g:</p>
<p><code>helm template my-chart stable/chart --output-dir /home/user/my-chart</code></p>
<p>Then you can use <code>kubectl apply -f /home/user/my-chart</code></p>
