linux server Archives - Page 2 of 8 - ITFROMZERO

Virtualization tutorial - IT technology blog

Migrating a Linux Server to KVM: Using virt-p2v Instead of VMware Converter

By IT From Zero August 19, 2026

A detailed guide on using virt-p2v to migrate physical Linux servers to KVM. A stable, free, and production-ready P2V solution that's a perfect replacement for VMware Converter.

Network

Enabling HTTP/3 (QUIC) for Nginx: Speeding Up Websites in Poor Network Conditions

By IT From Zero August 17, 2026

Guide to upgrading Nginx to HTTP/3 (QUIC) to optimize website speed. This article shares how to fix HoL blocking, configure 0-RTT, and handle real-world firewall issues.

Fedora

Speed Up Fedora Updates: Building a Local DNF Mirror to Save Bandwidth and Time

By IT From Zero August 10, 2026

A detailed guide on building a Local DNF Mirror for Fedora to speed up package updates and save international bandwidth. The perfect solution for multi-server Lab systems.

Monitoring

Beszel Installation Guide: Monitor Dozens of Servers with Just 15MB of RAM

By IT From Zero August 9, 2026

Install Beszel - a lightweight multi-server monitoring solution with Docker Stats support. A perfect replacement for Netdata and Zabbix with minimal RAM usage.

Artificial Intelligence tutorial - IT technology blog

LocalAI: Building Your Own “Official” OpenAI API Server on Linux

By IT From Zero July 28, 2026

Build your own AI server with LocalAI on Linux. A detailed guide on running LLMs, image generation, and TTS with 100% OpenAI API compatibility, fully offline.

Security

SSH Bastion Host (Jump Server) Configuration Guide: A Secure Gateway for Linux Systems

By IT From Zero July 24, 2026

Stop exposing internal servers to the Internet. Learn how to configure a professional SSH Bastion Host (Jump Server) to manage access and securely log Linux system activity.

Ubuntu

Installing Virtualmin on Ubuntu 22.04: A ‘$0’ Multi-Domain Hosting Management Solution

By IT From Zero July 24, 2026

Forget expensive cPanel licenses. This guide helps you install Virtualmin on Ubuntu 22.04 to manage dozens of websites professionally and for free.

Centos

Installing OpenVPN on CentOS Stream 9: Enterprise-Grade Security with SELinux

By IT From Zero July 20, 2026

A production-ready guide to installing OpenVPN on CentOS Stream 9. Optimize security with AES-256-GCM, configure Firewalld, and manage SELinux without disabling it.

Centos

Installing GitLab CE on CentOS Stream 9: Building Your Own Internal Code and CI/CD Forge

By IT From Zero July 16, 2026

Properly install GitLab CE on CentOS Stream 9. Detailed instructions from hardware configuration and SELinux security to free Let's Encrypt SSL setup.

Linux

How to Enable and Configure TCP BBR on Linux Server: Optimize Network Speed and Reduce Latency

By IT From Zero July 14, 2026

TCP BBR is Google's congestion control algorithm, built into Linux since kernel 4.9, offering better throughput and lower latency than the default CUBIC. Activation takes just a few sysctl commands — no reboot required, no application code changes.