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Docker Secrets: Don’t Expose Passwords via a Clumsy ‘inspect’ Command

By admin April 17, 2026

Learn how to use Docker Secrets to protect passwords and API keys instead of exposing them via environment variables. A practical guide for Swarm and Compose v2.

Git

Gitea Installation: Build Your Own High-Performance, Low-Cost Git Server

By admin April 17, 2026

Gitea is the perfect high-performance, low-cost Git Server alternative to GitLab for low-spec VPS. This guide provides step-by-step instructions for Docker installation, Nginx configuration, and real-world tips for stable operation.

Security

Unmasking Rootkits on Linux: How to Use the Chkrootkit and Rkhunter Duo

By admin April 17, 2026

Don't let Rootkits silently take control of your server. Learn how to use Rkhunter and Chkrootkit to detect hidden malware and effectively secure your Linux server.

Network

DNS Configuration on Linux: Permanently Fix Settings Being Lost After Reboot

By admin April 15, 2026

Tired of losing DNS settings in /etc/resolv.conf after every reboot? This guide shows you how to properly configure DNS on Linux using Netplan, nmcli, and systemd-resolved for long-term stability.

Monitoring

Mastering Network Infrastructure with LibreNMS: From Bandwidth Monitoring to Automated Telegram Alerts

By admin April 15, 2026

A detailed guide on installing LibreNMS using Docker for network monitoring. Track bandwidth, CPU, RAM, and configure automated Telegram alerts for SysAdmins.

Docker

Implementing Zero-Downtime Blue-Green Deployment with Docker Compose & Nginx

By admin April 15, 2026

Don't let customers see 502 errors every time you update code. Discover the secret to simple Blue-Green Deployment with Docker Compose and Nginx for true Zero-Downtime.

Centos

Live Patching Kernel Vulnerabilities on CentOS Stream 9 with kpatch: Security Updates Without Reboots

By admin April 15, 2026

Install and use kpatch on CentOS Stream 9 for 'hot' kernel security patching. Live Patching ensures 100% uptime by fixing vulnerabilities without restarting your server.

MySQL

MySQL Performance Tuning: Boosting Speed with Buffer Pool and Thread Pool in Practice

By admin April 15, 2026

Expert secrets for practical MySQL optimization: Configuring Buffer Pool, Thread Pool, and Redo Log to speed up queries, reduce Disk I/O, and stabilize systems during high traffic.

Development

RabbitMQ + Python: The ‘Lifesaver’ Solution to Eliminate Application Lag for Background Tasks

By admin April 15, 2026

Learn how to use RabbitMQ and Python for professional background task processing. An optimal solution to reduce latency, increase scalability, and ensure data safety for backend applications.

Ubuntu

Installing ZFS on Ubuntu: The ‘Lifesaver’ for Peace of Mind and Data Security

By admin April 15, 2026

ZFS is a top-tier storage solution offering absolute data protection through Snapshots and RAID-Z. Learn how to install and optimize ZFS on Ubuntu for professional-grade storage.

Netdisco: Effortless Network Topology Automation and Switch Port Management

Snapshot Testing with Pytest-snapshot: Stop Struggling with Manual Assertions

Say Goodbye to Passwords: Implementing Magic Links with Node.js and Nodemailer

Securing Python Source Code with PyArmor: Effectively Preventing Reverse Engineering and Protecting Intellectual Property

Feature-Sliced Design (FSD): A ‘Divide and Conquer’ Solution for Large-Scale React Projects

Building Professional CLIs with Node.js and Oclif: From Fragmented Scripts to Standardized Tools

Implementing Circuit Breaker in Python: Don’t Let a Faulty API Crash Your Entire System

Deploying FastNetMon: A Lightweight DDoS Detection Solution via NetFlow/sFlow

3 Pro GraphQL Security Tips: Don’t Hand Hackers the Keys to Your Kingdom

Securing Sudo with 2FA: The Final Defense Against Root Hijacking

Docker Secrets: Don’t Expose Passwords via a Clumsy ‘inspect’ Command

Gitea Installation: Build Your Own High-Performance, Low-Cost Git Server

Unmasking Rootkits on Linux: How to Use the Chkrootkit and Rkhunter Duo

DNS Configuration on Linux: Permanently Fix Settings Being Lost After Reboot

Mastering Network Infrastructure with LibreNMS: From Bandwidth Monitoring to Automated Telegram Alerts

Implementing Zero-Downtime Blue-Green Deployment with Docker Compose & Nginx

Live Patching Kernel Vulnerabilities on CentOS Stream 9 with kpatch: Security Updates Without Reboots

MySQL Performance Tuning: Boosting Speed with Buffer Pool and Thread Pool in Practice

RabbitMQ + Python: The ‘Lifesaver’ Solution to Eliminate Application Lag for Background Tasks

Installing ZFS on Ubuntu: The ‘Lifesaver’ for Peace of Mind and Data Security