How are Node Exporter, Prometheus, and Grafana divided across a basic monitoring stack?
All three are interchangeable exporters that only expose raw host metrics.
Node Exporter draws dashboards, Prometheus collects login credentials, and Grafana stores operating-system files.
Grafana scrapes Node Exporter directly and Prometheus is only a theme library.
Node Exporter exposes host metrics, Prometheus scrapes and stores them, and Grafana queries and visualizes them.