Systems Administration

Running NetBSD in production is one thing. Running it under serious traffic is another. NetBSD at Scale shows how to design, secure, tune and operate infrastructure built for real workloads. From architecture and automation to high availability and disaster recovery, it is a practical guide for engineers who need systems that keep working.

Master Terraform from your first configuration to production infrastructure at scale. Learn through practical examples, real cloud scenarios and proven patterns for building secure, reliable infrastructure. Go beyond the syntax to understand the decisions, trade-offs and workflows that help teams use Terraform with confidence.

Take OpenTelemetry from theory to production. This practical guide shows you how to design, deploy and operate observability at scale, with real configurations, proven architecture patterns and hands-on guidance for performance, security, troubleshooting and cost. Built for engineers who need telemetry that works when it matters.

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.

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.

Master OpenTofu from the ground up with practical examples, proven patterns and expert guidance for real-world infrastructure. Whether you are migrating from Terraform or starting fresh, this book helps you build reliable, secure and maintainable cloud and on-premises environments with confidence.

Build, secure and run reliable mail servers with confidence. This practical guide walks you through Postfix and Dovecot from the ground up, covering everything from core email protocols to high availability, performance tuning and automation. Packed with real configurations and clear explanations you can use in production.

If you know Linux, you already have most of the skills you need to master FreeBSD. This practical guide shows where the systems differ, why those differences matter and how to deploy, secure and manage FreeBSD with confidence using comparisons that make every concept easy to understand.

Memory is at the heart of Linux performance. This book explains how the kernel manages it from virtual memory and page allocation to NUMA, cgroups and real-world optimization. Learn through clear explanations, kernel source examples and practical exercises you can run yourself.

Modern software delivery demands more than fast pipelines. It requires systems built for reliability, security and scale. This book shows how to design and run CI/CD as a production platform, with practical patterns, real world examples and proven strategies that help teams deliver software with confidence.