Expert tutorials, guides, and tips on Linux, DevOps, and IT Administration
A focused, eight-volume curriculum that teaches absolute beginners the Linux skills that actually matter — the command line, files, scripts, packages, networking, monitoring, security, and the daily work of administration. One volume per concept, in order, with no jargon and no detours....
A practical, opinionated 2026 roadmap to take you from "I have never opened a terminal" to "I run hardened Linux servers in production." Eight books, three stages, one straight line — and a study schedule you can actually finish in twelve weeks....
Explore the complete Dargslan open-source IT ecosystem: 120 Linux PyPI packages, 119 Windows Python CLI tools, 120 PowerShell modules on PSGallery, and organized GitHub repositories. Free, professional-grade tools for sysadmins, DevOps engineers, and cybersecurity professionals....
The definitive guide to hardening your Linux servers in 2026. Covers SSH hardening, firewall configuration with firewalld and nftables, SELinux enforcement, kernel security (sysctl), automatic patching, rootkit detection, audit logging, fail2ban, CIS benchmarks, file integrity monitoring, and a full post-install hardening checklist — with commands you can run today....
Everything you need to know about Grok — the AI model built by Elon Musk's xAI. Covers Grok 3 and Grok 3.5 capabilities, real-time X (Twitter) integration, API access and pricing, how it compares to ChatGPT, Claude and Gemini, coding ability, reasoning benchmarks, DeepSearch, and practical use cases for developers and IT professionals....
The definitive guide to passing the Red Hat Certified System Administrator (RHCSA) EX200 exam in 2026. Covers every exam objective in detail: essential system administration, user management, storage with LVM and Stratis, networking, firewalld, SELinux, containers with Podman, shell scripting, boot troubleshooting, and time management strategies for the performance-based exam....
Everything you need to know about becoming a SOC Analyst in 2026. Covers daily responsibilities, essential tools (SIEM, EDR, SOAR), required skills, certification roadmap (CompTIA Security+, CySA+, GCIA), salary data across EU and US, career progression from Tier 1 to SOC Manager, and how to get your first cybersecurity job....
The definitive guide to Ubuntu 24.04 LTS (Noble Numbat) server administration. Covers installation, initial hardening, AppArmor, UFW firewall, Nginx, PHP, databases, Docker, Snap packages, automatic updates, performance tuning, and everything you need to run Ubuntu in production....
Everything you need to know about Rocky Linux 9 — the free, community-driven RHEL-compatible enterprise Linux distribution. Covers installation, initial setup, security hardening, package management, web server deployment, and why Rocky Linux deserves a place in your server infrastructure....
A comprehensive comparison of Docker and Kubernetes — two essential container technologies that serve very different purposes. Learn when to use each, how they work together, and which skills to learn first for your DevOps career....
A complete, production-tested guide to migrating your CentOS 7, 8, or Stream servers to AlmaLinux 9. Covers pre-migration checks, the almalinux-deploy tool, post-migration verification, common pitfalls, and rollback strategies....
A thorough comparison of AlmaLinux and Ubuntu Server — the two leading choices for production Linux servers. We cover stability, package management, security, performance, support, and which one fits your infrastructure best....
Welcome to the Dargslan Tech Blog — long-form, hands-on articles for engineers who run real systems in production. We publish every week on Linux administration, DevOps tooling, cloud architecture, cybersecurity, Python automation, Windows Server, and the practical day-to-day skills that separate junior sysadmins from senior platform engineers. Every post is written by working professionals, includes copy-pasteable code and configuration files, and is updated whenever upstream tools release breaking changes.
There is no shortage of tech blogs on the internet, but most fall into one of two traps: shallow listicles written by people who have never touched the tools, or 30-page corporate whitepapers designed to sell a product. Our articles sit in the middle — long enough to actually solve your problem, short enough to read with a coffee, and always grounded in working examples you can run in your own terminal. We don't write filler, we don't gate content behind email forms, and we never publish AI-generated slop without expert review.
Our writers come from a sysadmin, SRE, and DevOps background and have shipped production systems for fintech, healthcare, telco, and SaaS companies across Europe and North America. When you read a tutorial here, you're reading what someone actually did at 2am during an incident — not a sanitized vendor case study.
Subscribe to our RSS feed, follow the tech news section, or grab the daily IT tip for a steady stream of practical knowledge. If long-form learning is more your style, our companion eBook library covers every topic from this blog in 200-500 page depth, with downloadable code repositories and lifetime updates.