Prometheus
A time-series metrics database and scraper.
Prometheus scrapes metrics from your servers and services (via exporters like node_exporter and cAdvisor), stores them efficiently, and lets you query them with PromQL. It pairs with Grafana for dashboards and Alertmanager for alerts.
Key features
- Pull-based metric scraping
- Powerful PromQL queries
- Exporter ecosystem
- Alertmanager integration
Pros
- Reliable and battle-tested
- Great exporter ecosystem
- Pairs with Grafana
Cons
- Steeper learning curve
- Long-term storage needs planning
Operating system
DockerLinux