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.

6 — Common Anti-Patterns

Three concrete Prometheus anti-patterns seen in this book's source material — high-cardinality labels, invalid/reserved metric naming, and misaligned histogram_quantile buckets — with why each one breaks and where to read the full explanation.

4 — Exporter Catalog

A lookup table of exporters covered in this book — key metrics, metric types, and what each metric tells you — for the two exporters with real worked examples in the source material.

5 — Prometheus Configuration Reference

A field-by-field reference for prometheus.yml — global settings, scrape_configs options, and worked examples pulled from real multi-job configurations.

1 — PromQL Cheat Sheet

A grouped, copy-paste reference of node_exporter PromQL queries for CPU, memory, disk, network, swap, inode, and TCP socket questions.