First download this file: https://raw.githubusercontent.com/nextcloud/all-in-one/main/nextcloud-aio-helm-chart/values.yaml and adjust at least all values marked with `# TODO!`
Since the values of this helm chart may change in the future, it is highly recommended to strictly follow the following procedure whenever you want to upgrade it.
1. Stop all running pods
1. Back up all volumes that got created by the Helm chart and the values.yaml file
1. Run `helm repo update nextcloud-aio` in order to get the updated yaml files from the repository
1. Now download the updated values.yaml file from https://raw.githubusercontent.com/nextcloud/all-in-one/main/nextcloud-aio-helm-chart/values.yaml and compare that with the one that you currently have locally. Look for variables that changed or got added. You can use the diff command to compare them.
1. After the file update was successful, simply run `helm install my-release nextcloud-aio/nextcloud-aio-helm-chart -f values.yaml` to update to the new version.