Loki stores logs cost-effectively by indexing only labels. Integrates seamlessly with Grafana. Promtail agent collects logs from nodes. LogQL queries logs like Prometheus queries metrics.
Architecture
Index only labels for cost efficiency. Store log content in object storage. Distributed for scale. Single binary for simple deployments.
- Deploy Promtail to collect logs
- Use labels for efficient queries
- Query with LogQL in Grafana
- Configure retention policies
- Scale horizontally for throughput
Integration
Native Grafana integration. Correlate with Prometheus metrics. Alert on log patterns. Works with existing logging agents.