Lightweight Linux flow data collector
Summary
The article presents the RFM project, a lightweight eBPF-based flow telemetry tool for Linux routers that collects per-flow statistics, enriches data with routing and MMDB sources, and exports Prometheus metrics. It emphasizes a small footprint, Grafana compatibility, and NixOS deployment, positioning RFM as a lean alternative to heavier tools like ntopng or pmacct for small to mid-sized networks.