I am looking to test a change in a Helm chart NOTES.txt file and intended to run a helm install with the --dry-run option, but I can not see how to specify an updated NOTES.txt file on my local file system (whether as part of a real or dry run install). I would like to validate changes to my NOTES.txt file but should there be multiple changes I don't want to have to make changes, commit, re-build, etc ... each time.
Any suggestions?
Thanks.
You don't need to specify the updated file. The contents of the templates/NOTES.txt including any changes made will be displayed at the bottom of the printout when you run the helm install command with --dry-run
The helm docs also mention using the --debug flag:
When you want to test the template rendering, but not actually install anything, you can use
helm install ./mychart --debug --dry-run. This will send the chart to the Tiller server, which will render the templates. But instead of installing the chart, it will return the rendered template to you so you can see the output
