{
    "@timestamp": "2017-10-12T08:05:34.853Z",
    "beat": {
        "hostname": "host.example.com",
        "name": "host.example.com"
    },
    "ceph": {
        "cluster_disk": {
            "available": {
                "bytes": 50847313920
            },
            "total": {
                "bytes": 67371577344
            },
            "used": {
                "bytes": 13071564800
            }
        }
    },
    "metricset": {
        "host": "ceph:5000",
        "module": "ceph",
        "name": "cluster_disk",
        "rtt": 115
    }
}