cgroup memory reporting not working under Elastic Agent

[strawgate]

I dont think cgroup memory reporting is working, perhaps it's an issue with cgroupv2 but I don't even see the cgroup limit in the non-zero metrics that agent prints

a really simple

docker run -d --memory=1gb --cpus=0.5 -v ./standalone.yml:/usr/share/elastic-agent/elastic-agent.yml docker.elastic.co/elastic-agent/elastic-agent:8.17.1

shows

cat /sys/fs/cgroup/memory.max 
1073741824

but the non-zero part of the beat process stats reports

        "cgroup": {
          "cpu": {
            "stats": {
              "periods": 209,
              "throttled": { "ns": 1208259, "periods": 2 }
            }
          },
          "memory": { "mem": { "usage": { "bytes": 756224000 } } }
        },

and the beat-stats reports

 "beat": {
    "cgroup": {
      "cpu": {
        "id": "/",
        "stats": {
          "periods": 19245,
          "throttled": {
            "ns": 6772325269,
            "periods": 13658
          }
        }
      },
      "memory": {
        "id": "/",
        "mem": {
          "usage": {
            "bytes": 924114944
          }
        }
      }
    },

which appears to be missing max/limit

[botelastic]

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