Argument for the Helm reset-then-reuse-values flag

[SCHrodrigo]

Description

A feature that the team I work with has been happy with is the flag reset-then-reuse-values. It makes the upgrades to charts with new default values work flawlessly, only using reuse ignores those values, so the upgrade fails because they are needed, and reset would lose the original data.

A better discussion about this is on a Helm repo PR.

Looking at the current docs of the module, reset and reuse are separate arguments, reset taking preference.

I think having one more arg for reset_then_reuse_values would be great. It would be prioritized over both flags alone.

Edit: I forgot to clarify that this would be 100% dependent on upgrading Helm to 3.14.0. Dependabot already created a PR for this.

Potential Terraform Configuration

reset_then_reuse_values = true # false

References

Pull request that upgrades Helm to 3.14.0
Original issue in the Helm repo about the flag
Current docs on the available flags
Helm docs about the flag

Community Note

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[andyli]

The aws-ebs-csi-driver helm chart removed its support of --reuse-values in favor of --reset-then-reuse-values since v2.29.0.

Those who use reuse_values = true of the chart will need to do helm chart upgrade outside of terraform-provider-helm for now.