How to add hostname to hostmetrics

[znoke]

I'm using the hostmetrics receiver to generate metrics which does not add any reference to the actual host on which the metrics are generated.
`receivers:
hostmetrics:
collection_interval: 30s
scrapers:
cpu:
memory:

exporters:
otlp/elastic:
endpoint: apm.something.com:8200
insecure: true

service:
pipelines:
metrics:
receivers: [hostmetrics]
exporters: [otlp/elastic]`

All metrics are exported to an elastic apm server. In the end I'm getting a document in our elastic search index which does not contain any information about the host.
{ "agent": { "name": "otlp", "version": "unknown" }, "processor": { "name": "metric", "event": "metric" }, "system.cpu.time": 1595129.1875, "labels": { "cpu": "cpu0", "state": "idle" }, "metricset.name": "app", "observer": { "hostname": "com-apm001.srv.combell-ops.net", "id": "26e873dd-841d-4fa8-a46e-bffcc18b9d61", "type": "apm-server", "ephemeral_id": "999f61dc-38b3-427a-ba1a-4d7a17b899b8", "version": "7.15.0", "version_major": 7 }, "@timestamp": "2021-11-02T00:00:01.839Z", "ecs": { "version": "1.11.0" }, "service": { "name": "unknown", "language": { "name": "unknown" } }, "event": { "ingested": "2021-11-02T00:00:02.247273218Z" } }

How can we distinguish metrics between our hosts? Can we somehow add the host information like it's present in our traces? I'm having a hard time finding any documentation on this.
{ "host": { "hostname": "some-host", "name": "some-host" } }

[pmm-sumo]

I believe resourcedetection processor could help here. E.g. adding something like following:

processors:
  resourcedetection/system:
    detectors: [system]
    timeout: 2s
    override: false
    system:
      hostname_sources: [os]