Systems Administration

Linux is one of the best decisions you can make for your computer — but knowing where to start is the hard part. This guide walks you through everything: choosing a distribution, installing it, and using it confidently every day. It was written by Jay LaCroix of Learn Linux TV, for complete beginners. No prior experience required.

When a license renewal lands at 567% of last year's bill, renting your infrastructure stops being a strategy. This is the escape tunnel: a complete production build of Apache CloudStack 4.22 LTS — KVM, Ceph, OS10 leaf-spine — across a three-city UK estate, written by an engineer with 32 years of building the real thing. Own your cloud down to the last packet.

Build secure, modern infrastructure with confidence. This hands-on guide shows you how to use Tailscale, WireGuard and zero-trust networking to create reliable, observable systems that scale. Follow practical, production-ready examples you can apply right away without guesswork or unnecessary complexity.

Cloud networks rarely fail in obvious ways. A DNS lookup breaks, a route disappears or traffic vanishes somewhere between clouds. This book shows you how to understand what is really happening, build networks that hold up under pressure and troubleshoot failures with confidence across AWS, Azure, Google Cloud, Kubernetes and hybrid environments.

Master Nix without the usual frustration. This practical guide takes you from your first reproducible development environment to production ready infrastructure with clear explanations and real examples. Learn the patterns that help DevOps and platform teams build reliable systems that scale with confidence.

Most Bash scripts start small but end up running critical systems. This book shows you how to write shell scripts that are portable, secure, and reliable across Linux distributions. From fundamental scripting techniques to production-ready patterns, you will learn how to build automation that handles errors gracefully, avoids common pitfalls and remains easy to maintain as it grows.

Master PostgreSQL administration with a practical guide to deploying, securing, optimizing, and operating production databases. Covering PostgreSQL 17 and 18, this book combines real-world examples, hands-on labs, and proven best practices for reliable, high-performance systems.

Troubleshooting Linux systems can feel like solving a mystery—but the right strategies make all the difference. This ebook teaches practical techniques, tools, and real-world approaches that help you diagnose problems faster and fix them with confidence.

Master Kubernetes health checks from the basics to production-grade reliability. Learn how probes really work, troubleshoot failures fast and build applications that recover automatically. With practical YAML, real-world scenarios and proven reliability patterns, this guide helps you keep Kubernetes workloads healthy when it matters most.

Take control of your development stack from the ground up. This book shows you how to build and run your own Git hosting, CI/CD and engineering platform, from a single server to infrastructure built for thousands. Learn how the pieces fit together, why key decisions matter and where the trade-offs really are.

Building fast LLM systems takes more than a powerful GPU. This book shows you what actually happens between prompt and response, where latency hides and how to fix it. Work from kernels and inference engines to distributed clusters, benchmarking and production reliability, with practical guidance for building systems that stay fast under real-world load.

GDPR compliance can feel complex, but putting it into practice doesn’t have to be. This handbook turns regulatory requirements into clear, workable steps for real organizations. With practical frameworks, workflows, templates and examples, it shows you how to build a compliance program that works in the real world and holds up under scrutiny.

Build OpenStack with confidence, from your first deployment to production at scale. This hands-on guide walks you through planning, configuration, security, daily operations and troubleshooting with practical examples and proven techniques. A dependable resource for admins, DevOps engineers and cloud architects.

Master Asterisk from the ground up and build a PBX you can trust in production. This practical handbook walks you through installation, SIP, voicemail, IVRs, queues, security, APIs, high availability and more, with annotated configs, exact commands and troubleshooting guidance you can actually use.

Field-level hardening for DCS/PLC and industrial network setups. Skip the generic IT fluff—get direct, actionable blueprints covering Purdue model network segmentation, asset tracking, countermeasures, and a complete implementation checklist.