Ceph » RADOS

Related BZ: https://bugzilla.redhat.com/show_bug.cgi?id=2154808

Context from BZ:

With Multiple clients connected to system, It would be good to get clients via ceph commands(could be orchestrator) for monitoring the client status and also to know about client host properties like Status, OS Type, OS Version.
client details at Ceph,
- Connectivity Status
- OS Type
- OS Version

...

The OS type/version could be easily added to the monitor sessions dump.  Things like entity name, entity address, RADOS feature bits and remote host name are already reported:

$ ceph daemon mon.a sessions

...
    {
        "name": "client.?",
        "entity_name": "client.admin",
        "addrs": {
            "addrvec": [
                {
                    "type": "any",
                    "addr": "10.0.2.15:0",
                    "nonce": 2713837944
                }
            ]
        },
        "socket_addr": {
            "type": "any",
            "addr": "10.0.2.15:0",
            "nonce": 2713837944
        },
        "con_type": "client",
        "con_features": 4540138322906710015,
        "con_features_hex": "3f01cfbffffdffff",
        "con_features_release": "luminous",
        "open": true,
        "caps": {
            "text": "allow *" 
        },
        "authenticated": true,
        "global_id": 4134,
        "global_id_status": "new_ok",
        "osd_epoch": 16,
        "remote_host": "cephtest" 
    },