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A Guide to Configuring AppArmor on Ubuntu: Restricting Process Permissions to Secure Your Server

By admin March 9, 2026

Many admins focus only on firewalls and SSH, forgetting the danger posed by the running applications themselves. This article shares real-world experience on how to use AppArmor on Ubuntu to 'jail' processes, limit their permissions, and prevent privilege escalation during an attack.

Virtualization

How to Remotely Manage KVM Virtual Machines with the virt-manager GUI

By admin March 9, 2026

Fixing bugs on a KVM server late at night using only the virsh command line? There's a better way! This guide shows how to use virt-manager to remotely manage KVM VMs via SSH, providing an intuitive GUI to handle incidents faster and more effectively.

Docker

Practical Docker Networking: When to Use Bridge, Host, or Overlay?

By admin March 9, 2026

From the frustrating 'Connection Refused' error when containers can't find each other, to mastering different Docker network types. This article is my hands-on experience with Bridge, Host, and Overlay networks, helping you choose the right tool for each specific problem.

Security

Enhancing SSH Security: A Guide to Setting Up 2FA with Google Authenticator

By admin March 9, 2026

Don't let your server be compromised by a password alone. This guide will show you how to set up a second layer of 'armor' for SSH using your phone with Google Authenticator.

Ubuntu

How to Install Node.js and npm on Ubuntu (2024 Guide)

By admin March 9, 2026

Looking for a professional way to install Node.js and npm on Ubuntu? This article provides a detailed guide on 3 methods: NVM, NodeSource PPA, and the default repository, and also shows you how to use PM2 to manage your applications.

Development

A Beginner’s Guide to CI/CD with GitHub Actions: Automation for Happier Devs

By admin March 9, 2026

Tired of manual deployments and unexpected bugs? This article provides a step-by-step guide to setting up a CI/CD pipeline with GitHub Actions, automating everything from testing to deployment to boost productivity and minimize errors.

Development

Complete Guide to Installing and Configuring Apache2 on Ubuntu 22.04

By admin March 8, 2026

Installing Apache2 on Ubuntu 22.04: virtual hosts, UFW, and SSL with Let's Encrypt. This is the workflow I actually run in production — not a copy from the docs.

Python

Python Automation for Daily Tasks: File Cleanup, Backups, and Automated Notifications

By admin March 8, 2026

Learn how to write Python scripts to automate 3 real-world daily tasks: organizing folders by file type, backing up MySQL with automatic rotation, and monitoring a directory with Telegram notifications. Includes practical lessons on performance when handling large files.

Security

Linux Server Security Audit with Lynis: From Installation to a Hardening Index of 80+

By admin March 8, 2026

Lynis runs directly inside your server and checks over 200 configuration points that remote scanners simply can't see. This guide walks through installation, interpreting results, and fixing real-world warnings — from SSH to kernel hardening — to push your hardening index from 55 up to 80+.

Docker

Docker Volumes: Persistent Data Storage That Survives Container Restarts

By admin March 8, 2026

Lost an entire database at 2 AM because I forgot to use Docker volumes — here's the hard-won lesson and a guide to configuring volumes correctly for production, including backup and monitoring.

Repository Rescue: Mastering git fsck to Recover Code and Fix Data Errors

Optimize Windows Virtual Machines to Run ‘Silky Smooth’ with VMware OS Optimization Tool (OSOT)

Installing Pyrra: Managing SLOs and Alerts the Google SRE Way

Installing Woodpecker CI on Fedora Server: A Lightweight CI/CD Solution for Gitea

Configuring Docker daemon.json: Prevent Disk Full Errors and Production Server Crashes

Python lxml: The ‘Heavy Weapon’ for Processing XML/HTML in Legacy Systems

Mastering NetworkManager Dispatcher: Automate ‘Everything’ When Changing Networks on Linux

Configuring DNS Split-Horizon with BIND9: The IP “Splitting” Trick for LAN and Internet

Building Background Jobs for Next.js: Say Goodbye to Redis, Welcome Inngest

mysqlslap: How I “Torture” MySQL to Find Real-World Load Limits

A Guide to Configuring AppArmor on Ubuntu: Restricting Process Permissions to Secure Your Server

How to Remotely Manage KVM Virtual Machines with the virt-manager GUI

Practical Docker Networking: When to Use Bridge, Host, or Overlay?

Enhancing SSH Security: A Guide to Setting Up 2FA with Google Authenticator

How to Install Node.js and npm on Ubuntu (2024 Guide)

A Beginner’s Guide to CI/CD with GitHub Actions: Automation for Happier Devs

Complete Guide to Installing and Configuring Apache2 on Ubuntu 22.04

Python Automation for Daily Tasks: File Cleanup, Backups, and Automated Notifications

Linux Server Security Audit with Lynis: From Installation to a Hardening Index of 80+

Docker Volumes: Persistent Data Storage That Survives Container Restarts