Grafana Loki Skill Comprehensive guide for Grafana Loki - the cost-effective, horizontally-scalable log aggregation system inspired by Prometheus. What is Loki? Loki is a horizontally-scalable, highly-available, multi-tenant log aggregation system that: - Indexes only metadata (labels) - Not full log content like traditional systems - Stores compressed chunks in affordable object storage (S3, GCS, Azure Blob) - Uses Prometheus-style labels for organizing log streams - Multi-tenant by default with built-in tenant isolation - Cost-efficient - Dramatically smaller index and lower operational cos…