Original Helm chart gone - how can I find / get it from the cluster?

Question

I'm connected to a cluster which has a release, from a chart, but it was installed by someone else who I think used a tweaked, locally-stored chart.

I don't have access to their original chart/repo. Is there a way I can retrieve it from the cluster, so I can tweak/amend, and re-install it?

Or, can I find the URL of the original repo that was used? The chart name is wordpress-0.6.0, but that's of no use, since it's the same as the "official"/original one.

Answer 1

You can use helm get manifest <RELEASE_NAME> to fetch the kubernets manifests and you can use helm get values <RELEASE_NAME> 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 <RELEASE_NAME> with your release name.

Answer 2

To get the package to connect to the helm kubernetes cluster and run helm fetch which will

pull down the char from a repository and (optionally) unpack it in the local directory.

use helm fetch --help to see formating options

Use helm --help to see available commands.

Available Commands: completion Generate autocompletions script for the specified shell (bash or zsh) create create a new chart with the given name delete given a release name, delete the release from Kubernetes dependency manage a chart's dependencies diff Preview helm upgrade changes as a diff fetch download a chart from a repository and (optionally) unpack it in local directory get download a named release history fetch release history home displays the location of HELM_HOME init initialize Helm on both client and server inspect inspect a chart install install a chart archive lint examines a chart for possible issues list list releases package package a chart directory into a chart archive plugin add, list, or remove Helm plugins repo add, list, remove, update, and index chart repositories reset uninstalls Tiller from a cluster rollback roll back a release to a previous revision search search for a keyword in charts serve start a local http web server status displays the status of the named release template locally render templates test test a release upgrade upgrade a release verify verify that a chart at the given path has been signed and is valid version print the client/server version information

Answer 3

You can download the latest stable or unstable version from the helm repo. First, You need to verify the remote helm repo URL below command.

# helm repo list

For stable repo URL, you will get output like

NAME            URL
stable          https://kubernetes-charts.storage.googleapis.com

It refers to https://github.com/helm/charts/tree/master/stable

Now I will tell you to download the chart from the repo URL.

helm fetch stable/wordpress --version 0.6.0

For the extracted copy of the chart

 helm fetch stable/wordpress --version 0.6.0 --untar

The above command will download the chart in your current directory.

Answer 4

Below worked for me in helm-3:

1. Get the name of the release of which you want to get charts using helm list
2. helm get manifest [release name]

You can write this to some text file instead of stdout and separate the charts. ( Cheers🥂 )

Note: You will need to create persistedVolumes & PVC's. Those are not exported using above command