admin – Page 63 – ITFROMZERO

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.

Docker

Using Dive to Inspect Docker Image Layers: How I Slimmed Down an Image from 1.5GB to 120MB

By admin April 15, 2026

Learn how to use Dive to dissect Docker image layers, identify junk files, and optimize image size from 1.5GB to 120MB through a real-world example.

Security

Gitleaks Installation Guide: The “Shield” to Prevent Secret and API Key Leaks in Git

By admin April 15, 2026

Don't let API key leaks ruin your career. A detailed guide on installing Gitleaks to automatically detect and prevent secret exposure in Git repositories.