ubuntu Archives

Nix on Ubuntu and Debian: Multi-Version Software and Atomic Rollbacks

May 30, 2026

Ditch dependency conflicts on Ubuntu and Debian. Learn how to use the Nix Package Manager for side-by-side software versions, non-root installs, and instant rollbacks.

Linux

Stop Hardcoding SMTP: Set Up a Postfix Mail Relay for Linux Alerts

May 25, 2026

Learn how to configure Postfix as a send-only mail relay on Linux. This guide covers installation, security hardening, and address rewriting to ensure your system alerts and Cron jobs deliver emails reliably.

Networking

Ubuntu Dual WAN Load Balancing and Failover with IPRoute2 and Netplan

May 21, 2026

Learn how to configure Dual WAN Load Balancing and Failover on Ubuntu Server using IPRoute2 and Netplan. This guide covers policy-based routing and automated health checks for high-availability networking.

Linux

Ditch the Mouse: A Practical Guide to i3wm on Ubuntu

May 21, 2026

Tired of overlapping windows? This guide shows you how to install i3wm on Ubuntu, configure Vim-style shortcuts, and slash your RAM usage for a faster workflow.

HomeLab

How to Install Canonical MaaS in Your HomeLab: Automate Bare-Metal OS Provisioning Over the Network

May 19, 2026

Canonical MaaS transforms your HomeLab into a proper bare-metal provisioning system — PXE boot, automated OS install, and cloud-init configuration without touching a USB drive. This guide walks through installation, network setup, machine commissioning, and advanced automation using the MaaS CLI and Ansible integration.

Networking

6 Months with Zabbix: A Real-World Guide to Proactive Network Monitoring

May 13, 2026

A production-hardened guide to Zabbix 7.0. From installing on Ubuntu 24.04 to configuring SNMP and stopping alert storms, this is everything I learned in my first 6 months of usage.

Linux

Kernel Live Patching: Fix Linux Vulnerabilities Without the Reboot Nightmare

May 12, 2026

Reboots cause downtime and stress. Learn how to use ftrace and Canonical Livepatch to secure your Linux kernels in real-time without dropping a single connection.

HomeLab

How to Install CasaOS on Ubuntu: Give Your Old PC a Second Life as a Personal Cloud

May 10, 2026

Give your old PC a second life. Learn how to install and configure CasaOS on Ubuntu for a stable, user-friendly home server based on 6 months of testing.

Linux

Breathe New Life into Old Hardware: Building a Linux Print Server with CUPS

May 6, 2026

Don't let old computers go to waste. This guide shows you how to build a rock-solid Linux print server with CUPS, featuring AirPrint support and user quotas.

Networking

GNS3 on Ubuntu: Build a Pro-Grade Network Lab Without the Hardware Cost

April 30, 2026

Ditch the expensive hardware. This guide shows you how to install GNS3 on Ubuntu, tune it for peak performance using KVM, and bridge your virtual labs to the physical world.