About the NetoFlow API

The NetoFlow API is a very simple API endpoint that provides client-side statistics from a running NetoFlow instance. By default, the API listens on TCP port 8080. The API is unauthenticated and read-only. For a production deployment, access to the API port on NetoFlow should be restricted by network access, or the API should be disabled if it is not needed.

Per-device statistics are calculated pre-filter and pre-downsample.

Configuring the NetoFlow API

/etc/netoflow.conf configuration settings

[api]
enabled         = true  # enable or disable the API, default: true
port            = 8080  # port for the API, default: 8080

environment variable configuration settings

NETO__API__ENABLED=true  
NETO__API__PORT=8080  

For more details on how to modify the configuration of NetoFlow, see Install NetoFlow (container) or Install NetoFlow (Linux package).

Reading statistics with the NetoFlow API

Read statistics from port 8080 on the NetoFlow host using this endpoint: /api/v1/stats/rate

On your local system: http://localhost:8080/api/v1/stats/rate

If you cannot access this port when NetoFlow is running, ensure you do not have a local firewall in place that is blocking the port, you have mapped the container port 8080 to a local port if you are using the NetoFlow container, and you have not disabled or changed the port in the NetoFlow configuration.

Using curl to read statistics from NetoFlow running on localhost

curl localhost:8080/api/v1/stats/rate

{
  "code": 200,
  "meta": {
    "count": 1,
    "timems": 0
  },
  "data": {
    "type": "rate stats 1m",
    "instance": null,
    "aggregates": {
      "netflow-filtered": 0,
      "netflow-in": 1034.8078748433154,
      "netflow-out": 1034.8078748433154,
      "nfpktdecerrs": 0,
      "notemplate-all": 0,
      "notemplate-v10": 0,
      "notemplate-v9": 0,
      "sflow-filtered": 0.09559831561527027,
      "sflow-in": 0.18078967640840649,
      "sflow-out": 0.08519136079313624,
      "sfpktdecerrs": 0
    },
    "devices-inflow": [
      {
        "device": "10.0.10.253",
        "flows": 1082.9726620649064
      },
      {
        "device": "192.168.2.253",
        "flows": 0.18944462469620377
      }
    ],
    "devices-outflow": [
      {
        "device": "10.0.10.253",
        "flows": 1082.9726620649064
      },
      {
        "device": "192.168.2.253",
        "flows": 0.08951883493703489
      }
    ]
  }
}