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Ubuntu tutorial - IT technology blog
Building Your Own Mail Server with Postfix and Dovecot on Ubuntu 22.04: Take Full Control of Your Mail Flow
July 25, 2026
CentOS tutorial - IT technology blog
CentOS 7 to AlmaLinux/Rocky Linux Upgrade Guide using ELevate: Fast, Efficient, No Reinstall Needed
July 25, 2026
VMware tutorial - IT technology blog
Eliminate ‘Noisy Neighbor’ Issues with VMware SIOC: Protecting Bandwidth for Critical VMs
July 25, 2026
Virtualization tutorial - IT technology blog
Handling IOMMU Groups with ACS Override Patch: The Ultimate GPU Passthrough Trick for Budget Motherboards
July 25, 2026
Virtualization tutorial - IT technology blog
Optimizing Proxmox: How to Create a ‘Gold Standard’ LXC Template for Mass Deployment in 30 Seconds
July 25, 2026
Ubuntu tutorial - IT technology blog
Optimizing PHP 8.3 on Ubuntu 24.04: Don’t Let Your Server Run Like a Snail
July 25, 2026
Python tutorial - IT technology blog
Mastering Python functools: Writing Better, Faster Code
July 25, 2026
Fedora tutorial - IT technology blog
Fixing SELinux Errors on Fedora for Good: Use setroubleshoot and audit2allow Instead of Disabling It
July 25, 2026
Fedora tutorial - IT technology blog
Build Your Own High-Performance, Low-Cost Git Server with Gitea on Fedora: Maximum Security with SELinux
July 25, 2026
Network tutorial - IT technology blog
Configuring Multi-WAN Failover on Linux: A “Never-Down” Internet Solution with Keepalived
July 24, 2026
Security tutorial - IT technology blog
Posted inSecurity

Teleport: How I Managed 50+ Servers and K8s Without Using a Single SSH Key

Posted by By admin May 14, 2026
Managing SSH keys for dozens of servers is a significant security challenge. This article shares practical experience in deploying Teleport—an SSH alternative using short-lived certificates to centralize Server and Kubernetes management with detailed audit logs.
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Linux tutorial - IT technology blog
Posted inLinux

Mastering lsof on Linux: Pro Tips for Finding Processes Occupying Ports and Fixing ‘Too Many Open Files’ Errors

Posted by By admin May 14, 2026
Linux users shouldn't miss out on lsof for monitoring file descriptors and fixing 'Too many open files' errors. Check out 5 real-world troubleshooting tips from a system expert.
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Linux tutorial - IT technology blog
Posted inLinux

Hunting Down CPU-Hogging “Culprits” on Linux: Mastering perf and Flame Graphs

Posted by By admin May 13, 2026
A detailed guide on using perf on Linux for CPU profiling and Flame Graph generation. Learn how to pinpoint slow functions with minimal overhead.
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Python tutorial - IT technology blog
Posted inPython

Build a Pro Data Dashboard in 15 Minutes with Streamlit: Say Goodbye to Frontend Woes

Posted by By admin May 13, 2026
Stop wasting days on HTML/CSS just to build a dashboard. Discover how to create professional data analytics apps with Python and Streamlit in just 15 minutes.
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Network tutorial - IT technology blog
Posted inNetwork

Tshark: The ‘Secret Weapon’ for CLI Network Analysis for SysAdmins

Posted by By admin May 13, 2026
Tshark is the command-line version of Wireshark, allowing SysAdmins to perform deep packet analysis via SSH. Learn how to use display filters and extract real-world data to resolve network issues.
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Docker tutorial - IT technology blog
Posted inDocker

Docker Socket Security: Don’t Let ‘/var/run/docker.sock’ Become a Backdoor for Hackers

Posted by By admin May 13, 2026
Don't let /var/run/docker.sock be a fatal vulnerability on your VPS. Discover how to use Tecnativa Proxy for Docker API permissions—high security for only 15MB RAM.
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Fedora tutorial - IT technology blog
Posted inFedora

Configuring VDO on Fedora: How I “Squeezed” 500GB of Data into a 100GB Drive

Posted by By admin May 13, 2026
Running out of server disk space? Discover how to configure VDO on Fedora for data compression and deduplication, multiplying your virtual storage capacity.
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Network tutorial - IT technology blog
Posted inNetwork

Configuring LACP (802.3ad) on Linux: Practical Solutions for Bandwidth Aggregation and Redundancy

Posted by By admin May 13, 2026
A detailed guide on configuring LACP (802.3ad) on Linux for bandwidth aggregation and increased redundancy. This article shares real-world experiences in troubleshooting packet loss and optimizing performance for large systems.
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Database tutorial - IT technology blog
Posted inDatabase

Horizontal MySQL Sharding with Vitess: Scaling Billions of Records with Zero Downtime

Posted by By admin May 13, 2026
Learn how to shard MySQL with Vitess to scale your system to billions of records with zero downtime. Practical insights on Vindex, resharding, and performance optimization for DevOps.
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Docker tutorial - IT technology blog
Posted inDocker

Skopeo: Lightning-Fast Docker Image Copying Between Registries Without ‘Pulling’

Posted by By admin May 13, 2026
Forget manual Pull-Tag-Push. Skopeo lets you copy, inspect, and sync Docker images directly between registries instantly without wasting disk space.
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