admin, Author at ITNotes

Predicting CPU and RAM Load with Python and Scikit-learn: ML for System Resource Monitoring

March 29, 2026

A practical guide to building a machine learning model that predicts CPU and RAM load before spikes happen — using Python, psutil, and Scikit-learn. Born from a real 2 AM production incident, this tutorial covers data collection, feature engineering, model training with TimeSeriesSplit, and automated Slack alerting.

Security

Centralized Authentication on Linux with FreeIPA: A Production Guide to User and Group Management

March 29, 2026

FreeIPA gives you centralized Kerberos SSO, LDAP-backed user management, HBAC policies, and sudo rules — all in one stack built for Linux. This guide compares auth approaches, covers the real trade-offs, and walks through a production-ready FreeIPA deployment step by step.

HomeLab

Set Up AdGuard Home on Your HomeLab: Block Ads, Malware, and Boost Network DNS Security

March 29, 2026

Boost your HomeLab's network security and privacy with AdGuard Home. This tutorial guides you through setting up AdGuard Home with Docker to block ads, malware, and customize DNS filtering for your entire network. Learn practical tips for advanced usage and troubleshooting.

Programming

Rust for System Programming — Why You Should Learn It

March 29, 2026

Tired of 2 AM pager calls due to memory leaks and segmentation faults in critical system services? This article explores why Rust is the solution for robust, high-performance system programming, addressing the root causes of instability. Learn how Rust's unique features like ownership, borrowing, and fearless concurrency prevent common bugs at compile time, leading to unparalleled reliability.

Security

Installing & Configuring ModSecurity WAF for Apache/Nginx Web App Protection

March 29, 2026

Learn how to install and configure ModSecurity WAF for both Apache and Nginx web servers. This guide covers core concepts, detailed setup instructions, and essential best practices to protect your web applications from common cyber threats like SQL injection and XSS.

DevOps

Cloud Cost Optimization in DevOps: A Practical Guide with AWS Cost Explorer and Savings Strategies

March 28, 2026

Facing escalating cloud bills is a common nightmare. This guide walks you through practical strategies and using AWS Cost Explorer to identify and implement significant cost savings in your DevOps environment.

Database

Mastering Database Security: User Permissions, SQL Injection, and Data Protection

March 28, 2026

Securing your database is non-negotiable. This tutorial guides you through essential practices, from implementing the principle of least privilege with user permissions to robustly preventing SQL injection attacks. Discover how to encrypt data, manage user roles, and monitor your database effectively to safeguard your critical information.

Linux

Network Bonding and Teaming on Linux: Boost Speed and Ensure Redundancy

March 28, 2026

After six months of continuous operation, I'm sharing my experience with network bonding and teaming on Linux. Learn how to combine multiple network cards to boost speed, ensure failover redundancy, and significantly improve network performance on your servers.

Building AI Recommendation Systems: From Basics to Production Deployment

March 28, 2026

Learn to build AI recommendation systems from the ground up. This tutorial covers core algorithms like collaborative filtering and content-based methods, then dives into advanced usage with hybrid models and deep learning. Finally, it provides practical tips for deploying and maintaining recommendation systems in production environments.

Understanding AI Regulations: A Developer’s Guide to the EU AI Act and Beyond

March 28, 2026

Understanding AI regulations like the EU AI Act is crucial for junior developers building AI systems today. This guide walks you through integrating compliance into your development process, from understanding risk to implementing practical code examples for data privacy and explainability, ensuring your AI systems are responsible and legally sound.