Prometheus Configuration

This is a practical reference for setting up Prometheus monitoring from scratch. It covers the essentials: Helm and Docker installations, scrape configs for static targets and Kubernetes service discovery, and examples of recording rules for pre-computing metrics like error rates and P95 latency. The alert rule examples are solid starting points for service health checks. What's useful here is the relabeling config patterns for Kubernetes pods and the file-based service discovery setup, which can be tricky to get right. It assumes you know what metrics you want to collect but need help structuring the YAML correctly. Best for teams moving from proof-of-concept to production monitoring or standardizing their Prometheus setup across services.