Original Helm chart gone - how can I find / get it from the cluster?
You can use helm get manifest &lt;RELEASE_NAME&gt; to fetch the kubernets manifests and you can use helm get values &lt;RELEASE_NAME&gt; to get the values.yaml from the cluster. But I don't think there is any way to get the chart files back. Sorry.

PS: Please replace &lt;RELEASE_NAME&gt; with your release name.