Logging Example

Structure

Collector

Export numerical data for Prometheus and log data for Promtail.

• Exporter uses port 8080
• Log files are saved to ./collector/logs

Prometheus

Collects numerical data from Exporter.

• Server uses port 9090

Loki

Store logs received from Promtail.

• Server uses port 3100

Promtail

Collect string data from log files and send to Loki.

• Server uses port 9080
• Collects logs from files in /logs

Grafana

Visualize data from Prometheus and Loki.

• Web server uses port 3000 (Accessible from host)

Grafana Data Sources

• Prometheus: http://prometheus:9090
• Loki: http://loki:3100