Summary
Grafana is the most widely used open-source platform for visualizing time-series data, providing rich dashboards that combine metrics, logs, and traces from dozens of data sources in a single interface.
What is Grafana?
Grafana connects to data sources through plugins rather than storing data itself. It supports Prometheus, Elasticsearch, InfluxDB, CloudWatch, Loki, Tempo, and over 150 other sources. Users build dashboards using a drag-and-drop editor, combining panels with different visualizations — graphs, heatmaps, tables, gauges — all querying live data.
Alerting in Grafana allows teams to define rules against any data source and route notifications to Slack, PagerDuty, email, or webhook endpoints. Grafana Alerting can replace separate alerting tools by centralizing rule management.
Beyond dashboards, the Grafana ecosystem includes Loki (logs), Tempo (traces), and Mimir (metrics at scale), forming a full observability stack. Grafana Labs also offers Grafana Cloud as a managed SaaS service.
Why is Grafana relevant?
- Multi-source dashboards: Correlate Prometheus metrics, Loki logs, and Tempo traces in one panel
- Openness: Works with any existing data source without migrating stored data
- Community: Thousands of pre-built dashboard templates available on grafana.com
- Alerting: Unified alerting across all connected data sources reduces tool sprawl