No kubernetes labels for volumes exported?

[asp]

Hi,

I am fetching volume information from kubernetes cluster.

The labels are missing in the metricbeat event:

{
  "@timestamp": "2019-08-20T10:39:59.823Z",
  "@metadata": {
    "beat": "metricbeat",
    "type": "_doc",
    "version": "7.3.0"
  },
  "host": {
    "name": "server"
  },
  "event": {
    "dataset": "kubernetes.volume",
    "module": "kubernetes",
    "duration": 54769839
  },
  "metricset": {
    "name": "volume"
  },
  "service": {
    "address": "localhost:10255",
    "type": "kubernetes"
  },
  "kubernetes": {
    "volume": {
      "_module": {
        "pod": {
          "name": "poc-redis-0"
        },
        "namespace": "default",
        "node": {
          "name": "server"
        }
      },
      "name": "redis-database-store",
      "fs": {
        "available": {
          "bytes": 29895442432
        },
        "capacity": {
          "bytes": 31572529152
        },
        "used": {
          "bytes": 49696768
        },
        "inodes": {
          "count": 1966080,
          "used": 12,
          "free": 1966068
        }
      }
    }
  },
  "agent": {
    "hostname": "server",
    "id": "6e59cee0-fc61-448e-b5f8-e6f069bc3cba",
    "version": "7.3.0",
    "type": "metricbeat",
    "ephemeral_id": "1577b3e5-85cc-43db-8570-5de6e817a52a"
  },
  "ecs": {
    "version": "1.0.1"
  }
}

But in Kubernetes PVC and PV are labeled:

kubectl describe pvc redis-database-store-poc-redis-0
Name:          redis-database-store-poc-redis-0
Namespace:     default
StorageClass:  local-storage
Status:        Bound
Volume:        poc-redis
Labels:        appl=redis
               cluster=poc
               type=pvc
Annotations:   pv.kubernetes.io/bind-completed: yes
               pv.kubernetes.io/bound-by-controller: yes
Finalizers:    [kubernetes.io/pvc-protection]
Capacity:      30Gi
Access Modes:  RWO
VolumeMode:    Filesystem
Events:        <none>
Mounted By:    poc-redis-0


kubectl describe pv poc-redis
Name:              poc-redis
Labels:            appl=redis
                   cluster=poc
                   part-of=elasticStack
Annotations:       kubectl.kubernetes.io/last-applied-configuration:
                     {"apiVersion":"v1","kind":"PersistentVolume","metadata":{"annotations":{},"labels":{"appl":"redis","cluster":"poc","part-of":"elasticStack...
                   pv.kubernetes.io/bound-by-controller: yes
Finalizers:        [kubernetes.io/pv-protection]
StorageClass:      local-storage
Status:            Bound
Claim:             default/redis-database-store-poc-redis-0
Reclaim Policy:    Delete
Access Modes:      RWO
VolumeMode:        Filesystem
Capacity:          30Gi
Node Affinity:
  Required Terms:
    Term 0:        kubernetes.io/hostname in [server]
Message:
Source:
    Type:  LocalVolume (a persistent volume backed by local storage on a node)
    Path:  /kubernetes_local_storage/poc-redis

Is there any flag I missed to set?