How can you use Prometheus Node Exporter?

ThePrometheus Node Exporteris a core system-level exporter that exposeshardware and operating system metricsfrom *nix-based hosts. It collects metrics such as CPU usage, memory, disk I/O, filesystem space, network statistics, and load averages.

It runs as a lightweight daemon on each host and exposes metrics via an HTTP endpoint (default: :9100/metrics), which Prometheus scrapes periodically.

Key clarification:

It doesnotinstrument applications (A).

It doesnotcollect metrics directly from application HTTP endpoints (B).

It is unrelated to HTTP probing tasks — those are handled by theBlackbox Exporter(D).

Thus, the correct use of the Node Exporter is tocollect and expose hardware and OS-level metricsfor Prometheus monitoring.