Grafana Loki

The product is a log aggregation system that stores and queries logs from applications and infrastructure, grouping entries into streams indexed by labels rather than full text to reduce storage cost and enable fast queries. It is for developers, operations and IT teams in businesses that need to manage infrastructure and application logs. It is positioned against other log solutions by using minimal label-based indexing for lower storage and simpler operation, and is delivered as open source under AGPLv3 and as a managed service via a composable observability stack.

Key features

• Store and query logs from applications
• Horizontally scalable multi-tenant architecture
• Label-based indexing not full-text
• Send logs in any format from any source
• Persistence to object storage at petabyte scale
• Build metrics and alerts from log lines
• Tail logs in realtime
• Natively integrates with Prometheus Grafana K8s
• Query logs with LogQL
• Visualize logs alongside metrics in Grafana
• Query via LogCLI command line
• Send alerts to Prometheus Alertmanager
• Collect logs with Promtail collector
• Label transform and filter logs before ingestion