Hi Dan,
Ark currently assumes that you'll be storing your restic snapshots in the same place where you're storing the Ark backups. We have an open issue -
https://github.com/heptio/ark/issues/939 - that is tangentially related.
We could consider adding a field to the BackupStorageLocation to allow you to specify your own restic URL, with that value taking precedence over Ark's defaulting logic.
You would still need to specify the credentials for the restic location in both the Ark deployment and the Ark restic daemonset. With B2, for example, that would be the environment variables B2_ACCOUNT_ID and B2_ACCOUNT_KEY.
/cc Steve - any thoughts?
Andy