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
25 days left at this price
Book of the Month
June 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
6,658+
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
-46%
-39%
Mastering Ubuntu: From Basics to Advanced Administration
A Complete Hands-On Guide to Installation, Command Line, System Administration, Security, and Automation
100 views
€12.90 €7.90
-25%
Linux Security Auditing
Monitoring, Auditing, and Verifying the Security of Linux Systems
320 views
€19.90 €14.90
-48%
Mastering PowerShell:
The Ultimate Beginner's Guide to Automation and Scripting
397 views
€28.90 €14.90
-29%
-29%
Apache Fundamentals
Web Server Configuration, Virtual Hosts, and Core Administration
315 views
€27.90 €19.90
-30%
Linux for Absolute Beginners
A Step-by-Step Guide to Linux Basics, Command Line, File Management, and System Navigation
525 views
€9.90 €6.90
-27%
AWS for Linux Administrators
Operating, Securing, and Managing Linux Systems on Amazon Web Services
335 views
€36.90 €26.90
-29%
Linux Backup Strategies
Designing, Implementing, and Maintaining Reliable Backup Solutions
304 views
€27.90 €19.90
-44%
RHCSA EX200 Bonus Practice Book
Advanced Lab Tasks, Podman, ACL, Text Processing & Full Mock Exams
268 views
€22.90 €12.90
-19%
Linux Performance Tuning
A Practical Guide to Optimizing CPU, Memory, Disk, and Network Performance
391 views
€15.90 €12.90
-23%
SELinux & AppArmor Guide
Practical Mandatory Access Control for Securing Linux Systems
378 views
€21.90 €16.90
★ 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.
483 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
525 views
€9.90 €6.90
#3 Bestseller
-22%
Linux Terminal Basics
A Beginner’s Guide to Command-Line Navigation, File Management, and Shell Commands
381 views
€8.90 €6.90
-18%
Linux System Administration Handbook
A Practical Reference for Managing, Securing, and Maintaining Linux Systems
333 views
€16.90 €13.90
-20%
Linux Troubleshooting Techniques
A Practical Guide to Diagnosing and Resolving Common Linux System Issues
412 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
294 views
€13.90 €10.90
-23%
Linux Security Essentials
Fundamentals of Securing Linux Systems, Users, and Services
426 views
€12.90 €9.90
-23%
Linux Networking Fundamentals
A Beginner’s Guide to Network Configuration, Tools, and Troubleshooting in Linux
442 views
€12.90 €9.90
-35%
Network Fundamentals
Core Networking Concepts for IT, System Administration, and Security
411 views
€19.90 €12.90
-27%
Kubernetes Fundamentals
A Practical Introduction to Container Orchestration with Kubernetes
463 views
€36.90 €26.90
-43%
LPIC-1 Exam Prep
Essential Linux Skills for the LPIC-1 (101 & 102) Certification Exams
402 views
€34.90 €19.90
-66%
250 Linux Exercises
Practical Challenges for Command Line Mastery and System Administration
1,255 views
€29.00 €9.90
Latest Releases
-54%
Mastering nftables: A Practical Guide to Modern Linux Firewalling and Network Security
117 views
€12.90 €5.90
-54%
Mastering iptables: A Practical Guide to Linux Firewalling and Network Security
124 views
€14.90 €6.90
-45%
AWS Cost Optimization for Linux Workloads
Cut Your AWS Bill by 30–60% Without Breaking Production
155 views
€8.90 €4.90
-50%
AWS S3 and IAM in Practice
Object Storage, Identity, and Access Control for Production Linux Environments
180 views
€11.90 €5.90
-39%
AWS EC2 & VPC Networking for Linux Engineers
Launching, Securing, and Connecting Linux Workloads on AWS
143 views
€12.90 €7.90
-46%
Linux for System Administrators
Beginner's Guide to Managing, Securing, and Automating Linux Systems - Volume 8.
192 views
€10.90 €5.90
-46%
-46%
Networking Essentials in Linux
A Practical Guide to Configuration, Troubleshooting, and Secure Remote Access - Volume 5.
175 views
€10.90 €5.90
-46%
Package Management in Linux
Master APT, DNF, RPM, Snap, and Flatpak Across Every Major Distribution - Volume 4.
181 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
178 views
€10.90 €5.90
-46%
Linux Security Basics
A Practical Guide to Hardening, Defending, and Auditing Linux Systems - Volume 7.
139 views
€10.90 €5.90
-46%
Linux File Management and Permissions
A Professional Guide to Files, Ownership, and Secure Access Control - Volume 2
139 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.