Prometheus

A book-shaped table of contents for Prometheus: monitoring foundations through architecture, data model, instrumentation, service discovery, PromQL, alerting, production operation, PCA certification, and MAANG interview prep — cross-linking existing notes instead of duplicating them.

2 — Hands-On Labs

A sequenced, hands-on path through the practical material already covered elsewhere in this book, arranged as a lab progression for PCA readiness.

3 — Practice Exams

Practice questions at increasing difficulty (beginner, intermediate, scenario-based) plus full-length mock exams for PCA readiness.

3 — Prometheus in the Observability Ecosystem

Where Prometheus sits in the CNCF landscape — its pull-based cloud-native origins, its companion projects, and where this book does (and doesn't yet) connect it to the wider stack.

2 — Exporters

What a Prometheus exporter is, installing Node Exporter as a systemd service, and monitoring the container runtime itself via Docker Engine metrics and cAdvisor.