admin – Page 13 – ITFROMZERO

Install and Configure Nginx on Ubuntu 22.04: A Complete Web Server Guide from A to Z

By admin March 2, 2026

A step-by-step guide to installing and configuring Nginx on Ubuntu 22.04 with a quick-start structure — from the first command to virtual hosts, reverse proxy, and HTTPS. Includes practical tips on performance tuning, rate limiting, and zero-downtime reloads in production.

Centos

Installing and Configuring AlmaLinux as a CentOS Replacement: Real-World Experience

By admin March 2, 2026

A guide to installing AlmaLinux and migrating in-place from CentOS 7/8 to AlmaLinux without rebuilding servers. Compares AlmaLinux vs Rocky Linux vs Oracle Linux from a practical DevOps perspective, with basic post-install security configuration included.

Database

SQL vs NoSQL: When to Choose Each for Your Project

By admin March 2, 2026

SQL and NoSQL aren't competitors — each solves a different problem. This article breaks down when to choose SQL, when to use NoSQL, and how to combine both in real-world systems.

Artificial Intelligence tutorial - IT technology blog

What is Prompt Injection and How to Protect Your AI Application from Attacks

By admin March 2, 2026

Prompt injection is an attack that embeds malicious instructions into user input to override an AI model's behavior. This post shares hands-on experience and 5 layers of defense: input sanitization, role separation, output validation, least privilege, and monitoring.

Git

Git Hooks: Automate Your Workflow So You Never Commit Broken Code Again

By admin March 2, 2026

Git hooks let you automatically run linting, tests, and commit message validation before code enters the repo — no manual reminders needed. This article compares client-side vs server-side hooks, manual hooks vs Husky, and walks through the 3 most practical hooks to implement for your team.

Linux

Installing and Configuring NTP Server on Linux: Fixing Time Sync Issues in Production

By admin March 2, 2026

A guide to installing chrony and configuring internal NTP server/client on Linux, drawn from real production operations experience. Covers cluster configuration, firewall setup, offset verification, and a basic monitoring script.

Fine-tuning AI Models with Your Own Data: A Practical Guide from A to Z

By admin March 2, 2026

A hands-on guide to fine-tuning AI models with your own data using LoRA and QLoRA. From dataset preparation and LoRA adapter configuration to training with SFTTrainer, merging, and deploying a custom model for real-world use.

Network

Configuring IPv6 on Linux Servers: Static Addresses, Dual-Stack, and Real-World ip6tables

By admin March 2, 2026

Step-by-step guide to configuring IPv6 on Linux servers: enabling IPv6, assigning static addresses on Ubuntu/Debian and CentOS/Rocky, setting up dual-stack, ip6tables firewall, and troubleshooting real-world issues.

Most Useful MCP Servers for Developers: A Complete Guide with Installation Instructions

By admin March 2, 2026

MCP (Model Context Protocol) lets AI connect directly to your file system, database, and development tools instead of being completely isolated. This post covers the 7 most useful MCP servers with detailed installation guides to integrate them into Claude Desktop right away.

Ubuntu

Installing and Configuring Samba on Ubuntu: File Sharing with Windows

By admin March 1, 2026

A practical guide to installing and configuring Samba on Ubuntu 22.04 for sharing files with Windows machines on a local network. Covers smb.conf configuration, user creation, directory permissions, firewall setup, and connection monitoring.