How do data appear in Prometheus and Grafana?
sobes.tech AI
Answer from AI
Data in Prometheus and Grafana appear through the process of collecting, storing, and visualizing metrics:
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Prometheus is a monitoring system and a time series database. It collects metrics from various sources (exporters) via HTTP through regular requests (scraping). For example, an application or service exposes metrics in Prometheus format at a specific HTTP endpoint.
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Prometheus periodically polls these endpoints, retrieves metrics, and stores them in its time series database.
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Grafana is a visualization tool that connects to Prometheus as a data source and creates graphs, dashboards, and alerts based on the stored metrics.
Example: A Java application uses the micrometer library with a Prometheus exporter. It exposes metrics at /actuator/prometheus. Prometheus is configured to scrape this URL, collects the metrics, and Grafana displays them in a user-friendly way.