Monitoring & Logging
OpenTelemetry in 2026: Migrating from Prometheus to OTel Metrics
May 31, 2026
·
10 min read
Linux · Windows · Cybersecurity · DevOps · PowerShell
226 Premium eBooks for IT Professionals
Hands-on guides for sysadmins, pentesters & DevOps engineers — from absolute beginners to advanced practitioners. Instant download, lifetime access.
4.8/5 from 1,200+ readers
14-day money-back (if not downloaded)
Instant PDF + EPUB download
Secure Stripe checkout
29 days left at this price
Book of the Month
May 2026
250 Linux Exercises
Hands-on practice is the fastest way to master Linux. 250 real-world exercises covering commands, scripting, networking, security, and server administration.
€9.90
€29.00
-66% OFF
100% Free – No Credit Card Required
442 Free Professional IT Cheat Sheets 2026
Linux, DevOps, Docker, Kubernetes, Windows, Cybersecurity, Python, AI and more.
4 skill levels • Print-ready PDF • Instant download
442
Cheat Sheets
6,614+
Downloads
4
Skill Levels
PDF
Print-Ready
Quick Reference
FREE
OPERATING SYSTEMS
Linux User & Group Admin Cheat Sheet
782 downloads
Quick Reference
FREE
OPERATING SYSTEMS
Linux Log Management Cheat Sheet
756 downloads
Quick Reference
FREE
OPERATING SYSTEMS
Linux Backup & Recovery Cheat Sheet
598 downloads
Quick Reference
FREE
OPERATING SYSTEMS
Linux Package Management Cheat Sheet
494 downloads
Quick Reference
FREE
OPERATING SYSTEMS
Linux Firewall Cheat Sheet
481 downloads
Quick Reference
FREE
OPERATING SYSTEMS
SSH Commands & Configuration Cheat Sheet
460 downloads
Browse All 442 Cheat Sheets – Free Download
Just your email to download. No spam, unsubscribe anytime.
Save €48.20
Featured Bundle
49% OFF
Linux Mastery Bundle
From absolute beginner to professional Linux admin. 9 comprehensive books covering commands, scripting, networking, security, and advanced troubleshooting — at almost half the price.
€49.90
€98.10
-49% OFF
€5.54/book
Browse by Category
Featured Books
-35%
AlmaLinux Hosting Mastery
A Practical Step-by-Step Guide to Deploying, Securing, and Managing Web Servers on AlmaLinux 9
291 views
€19.90 €12.90
-39%
Kubernetes for Production: Scaling & Monitoring
Operating, Scaling, and Observing Real-World Kubernetes Clusters
299 views
€22.90 €13.90
-35%
Linux Environment Variables & Configuration Management
Managing System Configuration, Environment Variables, and Application Settings in Linux
223 views
€19.90 €12.90
-27%
Bash vs PowerShell: Cross-Platform Scripting
Comparing Shell Scripting Approaches Across Linux, Windows, and Cloud Environments
298 views
€29.90 €21.90
-30%
Rocky Linux 9 + Docker + Traefik: Self-Hosted Platform
Building a Secure, Scalable, and Automated Self-Hosting Infrastructure
225 views
€19.90 €13.90
-27%
PHP Security Best Practices
Building Secure PHP Applications: Validation, Authentication, and Defense-in-Depth
326 views
€29.90 €21.90
-32%
NFS & iSCSI: Linux Network Storage
Designing, Deploying, and Securing Network-Based Storage Infrastructure on Linux
239 views
€18.90 €12.90
-32%
LFCS Exam Prep: Linux Foundation Certified Sysadmin
Hands-On Preparation Guide for the Linux Foundation System Administrator Certification
245 views
€18.90 €12.90
-21%
Firewall Configuration: The Complete Guide
Mastering Linux Firewalls with iptables, firewalld, nftables, and UFW for Local, Server, and Cloud Security
317 views
€18.90 €14.90
-33%
Parrot OS Fundamentals
Cybersecurity, Privacy, and Ethical Hacking with Parrot Security OS
233 views
€23.90 €15.90
-26%
Azure for System Administrators
Operating, Securing, and Managing Infrastructure in Microsoft Azure
308 views
€37.90 €27.90
-48%
Webhook Automation in Practice
Building Event-Driven Integrations with Real-World Examples
296 views
€24.90 €12.90
★ Best Sellers
#1 Bestseller
-28%
Debian Linux for Absolute Beginners
A step-by-step guide to installing, exploring, and understanding Debian - your gateway into the Linux world.
466 views
€24.90 €17.90
#2 Bestseller
-30%
Linux for Absolute Beginners
A Step-by-Step Guide to Linux Basics, Command Line, File Management, and System Navigation
504 views
€9.90 €6.90
#3 Bestseller
-22%
Linux Terminal Basics
A Beginner’s Guide to Command-Line Navigation, File Management, and Shell Commands
371 views
€8.90 €6.90
-18%
Linux System Administration Handbook
A Practical Reference for Managing, Securing, and Maintaining Linux Systems
321 views
€16.90 €13.90
-20%
Linux Troubleshooting Techniques
A Practical Guide to Diagnosing and Resolving Common Linux System Issues
400 views
€14.90 €11.90
-22%
Linux System Administration for Beginners
A Practical Step-by-Step Guide to Managing Linux Servers, Users, Filesystems, and Services
286 views
€13.90 €10.90
-23%
Linux Security Essentials
Fundamentals of Securing Linux Systems, Users, and Services
406 views
€12.90 €9.90
-23%
Linux Networking Fundamentals
A Beginner’s Guide to Network Configuration, Tools, and Troubleshooting in Linux
424 views
€12.90 €9.90
-35%
Network Fundamentals
Core Networking Concepts for IT, System Administration, and Security
393 views
€19.90 €12.90
-27%
Kubernetes Fundamentals
A Practical Introduction to Container Orchestration with Kubernetes
448 views
€36.90 €26.90
-43%
LPIC-1 Exam Prep
Essential Linux Skills for the LPIC-1 (101 & 102) Certification Exams
391 views
€34.90 €19.90
-66%
250 Linux Exercises
Practical Challenges for Command Line Mastery and System Administration
1,229 views
€29.00 €9.90
Latest Releases
-54%
Mastering nftables: A Practical Guide to Modern Linux Firewalling and Network Security
108 views
€12.90 €5.90
-54%
Mastering iptables: A Practical Guide to Linux Firewalling and Network Security
115 views
€14.90 €6.90
-45%
AWS Cost Optimization for Linux Workloads
Cut Your AWS Bill by 30–60% Without Breaking Production
139 views
€8.90 €4.90
-50%
AWS S3 and IAM in Practice
Object Storage, Identity, and Access Control for Production Linux Environments
163 views
€11.90 €5.90
-39%
AWS EC2 & VPC Networking for Linux Engineers
Launching, Securing, and Connecting Linux Workloads on AWS
127 views
€12.90 €7.90
-46%
-46%
Networking Essentials in Linux
A Practical Guide to Configuration, Troubleshooting, and Secure Remote Access - Volume 5.
154 views
€10.90 €5.90
-46%
Linux for System Administrators
Beginner's Guide to Managing, Securing, and Automating Linux Systems - Volume 8.
171 views
€10.90 €5.90
-46%
Package Management in Linux
Master APT, DNF, RPM, Snap, and Flatpak Across Every Major Distribution - Volume 4.
156 views
€10.90 €5.90
-46%
Linux Shell Scripting for Beginners
A Hands-On Guide to Bash Automation, Scripting Fundamentals, and Real-World Projects - Volume 3
163 views
€10.90 €5.90
-46%
Linux File Management and Permissions
A Professional Guide to Files, Ownership, and Secure Access Control - Volume 2
125 views
€10.90 €5.90
-46%
Linux Security Basics
A Practical Guide to Hardening, Defending, and Auditing Linux Systems - Volume 7.
125 views
€10.90 €5.90
Bundle Deals
Save more when you buy books together
Daily IT Tip
Browse All Tips →From the Blog
View All Articles →
Why Dargslan?
Not just another PDF dump — built by IT pros, for IT pros.
📚
Curated by IT pros
Every book hand-picked by sysadmins & engineers — no fluff, no AI-generated junk.
⚡
Instant download
PDF + EPUB delivered to your inbox seconds after checkout. Lifetime access, no DRM lock-in.
💰
Best price guarantee
Find it cheaper elsewhere within 30 days? We'll refund the difference — no questions.
🌍
8 languages
EN, DE, FR, IT, ES, PT, NL, HU — learn in your native language, not just English.
Frequently Asked Questions
What is Dargslan?
Dargslan is a professional eBook store specializing in IT and technology books. We offer 226+ eBooks covering Linux, Python, DevOps, Networking, Databases, Security, Cloud Computing, and more — all as instant digital downloads in PDF and ePub format.
What formats are the eBooks available in?
All our eBooks are available as DRM-free digital downloads. Most titles come in PDF format, and many also offer ePub. You can read them on any device — computer, tablet, phone, or e-reader — with no restrictions on how you use your purchased books.
How do I download my eBooks after purchase?
After completing your purchase via Stripe or PayPal, you will receive an email with a secure download link. You can also access all your purchased books anytime from your customer account library. Downloads are available immediately after payment.
Do you offer discounts or bundle deals?
Yes! New users get 20% off their first purchase with code NEWUSER20. We also offer a Bundle Builder where you can combine multiple books and save up to 25%. Check our curated book series for structured learning paths at discounted prices.
Can I get a refund on digital purchases?
If you experience technical issues with your download, our support team will help resolve the problem or provide a refund. Since these are digital products, we ask that you contact us within 14 days of purchase.
Are the eBooks regularly updated?
Yes, we continuously add new titles and update existing ones to reflect the latest technologies and best practices. Our collection currently includes 226+ books with new releases added regularly.
Do you offer free eBooks?
Yes! We offer a selection of free eBooks on topics like Linux, Networking, Docker, and Bash Scripting. Visit our Free eBooks page to download them — just create a free account to get instant access.