Guides and tutorials for Linux system administration
We're thrilled to announce that Dargslan has officially reached 150 published eBooks — a major milestone in our mission to build the most comprehensive IT & programming eBook library. Here's a look at how we got here and what's coming next....
Learn the 7 essential Linux server monitoring tools that every system administrator needs to master. From htop to Prometheus, this guide covers real-time performance tracking, log analysis, and proactive alerting strategies....
A comprehensive guide to Linux backup strategies and disaster recovery planning. Learn rsync, Borg, LVM snapshots, automated backup scripts, and the 3-2-1 backup rule with practical implementation examples....
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....