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Chapter 13: Observability — Logging, Metrics, and Tracing

⏱️ Total chapter time: ~60 min (30 min reading + 30 min lab)

After this chapter, you will be able to: Use kubectl logs and Stern to stream multi-pod logs, deploy the Prometheus + Grafana stack via Helm, query metrics with PromQL, build dashboards, and instrument your own app for observability.

What’s Inside

SectionTopicTime
13.1The Three Pillars of Observability~5 min
13.2Logging — kubectl logs, Stern, and Aggregation~7 min
13.3Metrics — Prometheus and metrics-server~8 min
13.4Dashboards with Grafana~6 min
13.5🔬 Lab: Full Observability Stack on Minikube~30 min

Prerequisites

  • Completed Chapters 1–12 (all core concepts + Helm)
  • helm CLI installed (helm version to verify)
  • minikube status shows Running
  • Minikube with at least 4 GB RAM allocated (minikube config set memory 4096)