Supporting Unsealer in non operator Vault StatefulSet

[namenmalkav]

In the Helm chart for an operator-less Vault deployment, there is no default way to unseal a multi-replica StatefulSet. When --init runs on the second replica, it fails because Vault is already initialized. I understand that I need to modify how the unsealing process works, but the documentation lacks details on how to do this.

How can I modify the unseal process in the StatefulSet to support this setup? Or is it necessary to use Raft for this?

I am currently working on a solution to submit a pull request to improve the chart.