Pairing Iceberg with Nessie in a homelab is a nice way to get branch and merge semantics for data without paying for a managed catalog. One thing worth covering in a follow-up is snapshot expiration and orphan file cleanup, since on Ceph backed S3 those small files and old snapshots add up quickly if nobody schedules the maintenance jobs. A short section on how you back up the Nessie metadata store would also help anyone copying this setup.