ubuntu server Archives - ITFROMZERO

Installing ModSecurity v3 and OWASP CRS on Nginx Ubuntu: Building a Production-Ready Web Server WAF

By IT From Zero October 22, 2026

UFW and Fail2ban cannot inspect malicious payloads inside HTTP requests. Here is a step-by-step guide to deploying ModSecurity v3 with OWASP CRS on Nginx in Ubuntu to build a Layer 7 WAF that blocks SQLi, XSS, and RCE.

Ubuntu

Configuring Keepalived on Ubuntu Server: Setting Up Virtual IP and High Availability for Web Server Clusters

By IT From Zero October 11, 2026

Set up High Availability for web server clusters on Ubuntu using Keepalived and Virtual IP (VIP). Eliminate single points of failure with sub-second failover.

Ubuntu

Btrfs + Snapper on Ubuntu: Configure Automatic Snapshots and Instant Rollback When Your System Breaks

By IT From Zero October 8, 2026

Btrfs snapshots combined with Snapper are the most effective way to protect your Ubuntu Server — automatically snapshotting before every apt run and rolling back from GRUB even when the system won't boot. This article compares it against rsync and Timeshift, walks through a step-by-step installation, and covers real-world recovery scenarios.

Ubuntu

How to Build a Multi-Node Kubernetes Cluster on Ubuntu Server with K3s: Installation, Traefik Ingress, and Load Balancing

By IT From Zero October 3, 2026

A practical guide to building a multi-node Kubernetes cluster with K3s on Ubuntu Server. Optimize resources for budget VPS, join worker nodes in 5 minutes, and configure Traefik Ingress for smooth load balancing.

Ubuntu

Deploying GlusterFS on Ubuntu: A Cost-Effective Distributed Storage Solution

By IT From Zero September 16, 2026

Eliminate the fear of data loss from server crashes. This detailed guide on building a GlusterFS distributed storage cluster on Ubuntu Server ensures 24/7 availability.

Ubuntu

Fixing Broken Packages and PPA Conflicts on Ubuntu: Deep Debugging with aptitude and ppa-purge

By IT From Zero September 14, 2026

Debugging broken packages on Ubuntu requires more than just running apt --fix-broken install. This guide walks through using aptitude to analyze dependency conflicts in detail and ppa-purge to resolve PPA conflicts, drawn from hands-on experience managing over 20 Ubuntu servers.

Ubuntu

Building Your Own S3-Compatible Object Storage with MinIO on Ubuntu Server

By IT From Zero July 18, 2026

A detailed guide on installing MinIO Object Storage on Ubuntu Server. The perfect AWS S3 alternative to optimize storage costs and boost application performance.

Ubuntu

Installing Ubuntu Server on Raspberry Pi 5: Headless Setup, Static IP, and Real-World Home Server

By IT From Zero July 2, 2026

A guide to installing Ubuntu Server 24.04 LTS on a Raspberry Pi 5 in headless mode — no monitor required — configuring a static IP with Netplan, and deploying lightweight services like Pi-hole, Uptime Kuma, and Vaultwarden for an energy-efficient home server.

Ubuntu

Using cloud-init on Ubuntu Server: Automate System Configuration on First Boot

By IT From Zero July 1, 2026

cloud-init lets Ubuntu Server configure itself automatically on first boot via user-data YAML — no manual SSH required, no steps missed. This post compares cloud-init with bash scripts, breaks down the pros and cons, and walks through a practical deployment with a complete web server user-data example.

Network

Kea DHCP: The Modern ISC DHCP Replacement for Network Administrators

By IT From Zero July 1, 2026

It's time to leave the aging ISC DHCP behind. A detailed walkthrough of installing Kea DHCP Server on Linux, configuring it with JSON, and leveraging the REST API for efficient IP management.