So I have a nicely working 5 node proxmox cluster with integrated ceph for storage. I have a another production ceph cluster running Mimic that I would like to consider using to expand the storage capacity for my proxmox cluster. Would I be able to create an RBD pool on the external CEPH to present to the Proxmox cluster that is also running its own? I would imagine authentication / keys would be a problem. Has anyone tried this with success or should I go the iSCSI Gateway route from external to proxmox?