[Ceph-ansible] OSD Nodes with Different Hardware

Hello, I have searched and found some references to how to set up an Inventory file to accommodate OSD nodes with different hardware configurations.  I tried a few things with the INI form of the Inventory file, but I ended up using ansible-inventory to convert it to YAML.   Still, it's not clear what's the correct way to differentiate between different subgroups of hosts. Example:  I'm currently adding some new OSD nodes to a functioning cluster.  Although both the old nodes and the new nodes have the same size and number of HDDs, they have different NVMe drives.  Also, for some reasons the HDDs are enumerated starting from /dev/sdc on the old nodes, but from /dev/sda on the new.  Also, the new nodes will have a different block_db_size. Is there a straightforward way, other than duplicating the devices and block_db_size values multiple times, to define specific settings once for specific groups of hosts? Thanks. -Dave -- Dave Hall Binghamton University