Components of a Prometheus stack

When discussing Prometheus, people rarely mean just the Prometheus project (https://github.com/prometheus/prometheus) itself. Instead, they refer to the following:

• Prometheus as a full solution in which you deploy Prometheus for metrics collection, storage, and alerting rule evaluation
• Prometheus’s Alertmanager (https://github.com/prometheus/alertmanager) for routing alerts coming from Prometheus
• One or more exporters, such as Node Exporter (https://github.com/prometheus/node_exporter), to expose metrics
• Grafana (https://github.com/grafana/grafana) to visualize metrics from Prometheus via dashboards

Each of these components fits together to form a complete metrics solution for observability.

Prometheus

Understandably, Prometheus is the core technology in a Prometheus stack. Prometheus is comprised of four main parts: the time series database (TSDB), the scrape manager, the rule manager, and the web UI (along with...