Monitoring

Tools

Prometheus

• Runs as a monitoring server on a virtual machine, container, or bare metal
• Scrapes metrics from targets (using exporters)
• Collects metrics such as CPU usage, RAM usage, and disk I/O
• Stores time-series metrics in its own database

Grafana Loki

• Collects and stores logs from applications and systems
• Designed to integrate with Prometheus-style labels
• Lightweight compared to ELK

Grafana

• Connects to Prometheus as a data source (Metrics -> Prometheus -> Grafana)
• Connects to Loki as a data source (Logs -> Loki -> Grafana)
• Queries metrics from Prometheus
• Visualizes the metrics through dashboards
• Supports alerting (e.g.: email notification if CPU usage exceeds 80%)