Telegraf

Telegraf is the open-source server agent for collecting and reporting metrics from databases, systems, and IoT sensors.

Telegraf operates as a plugin-driven binary that collects data from over 300 native inputs (including Docker, Kubernetes, and Redis) and writes it to various destinations like InfluxDB or Kafka. It runs with a minimal memory footprint (often under 50MB) and handles high-throughput telemetry by batching points and managing internal buffers. You can deploy it as a sidecar or a standalone daemon to normalize disparate data formats into a single, structured stream for real-time monitoring.

https://github.com/influxdata/telegraf