PostgreSQL DBA with Docker is a hands-on student book

PostgreSQL DBA with Docker is a hands-on student book from TheDBAdmin Practitioner Series designed for working DBAs, DevOps engineers, SRE/DBRE learners, and PostgreSQL beginners who want to practice PostgreSQL administration safely using Docker. This book follows a simple learning flow: Concept → Diagram → Lab. Every chapter explains the idea, shows the architecture visually, and then gives tested commands that students can run on their own lab server. It covers PostgreSQL 16 with Docker 29 on AlmaLinux 9, including containers, images, volumes, port mapping, environment variables, configuration, backup/restore, roles and security, Docker Compose, pgAdmin, logs, troubleshooting, and lifecycle commands. A strong practical focus makes this book useful for classroom training, self-practice, and DBA lab preparation. Students learn how to create disposable PostgreSQL environments, test configuration safely, understand persistence with Docker volumes, run backups and restores, and manage PostgreSQL containers without disturbing the base server installation.