Running Harvester on one node - non clustered

Is it possible to configure harvester as a one-node setup?
I have a few 3 node clusters running already
I only want to use this one as a Host for my S3-Storage for Backup. If it fails I will replace it with a new server.
But I don’t want to use proxmox or esx as I want to use the same product everywhere.

Yes it’s possible to run Harvester as a single-node cluster. I did that in my home lab for a bit before later adding a second node.