ubuntu Archives

Mastering Linux Time Synchronization with Chrony: NTP, NTS Security, and Production Troubleshooting

October 10, 2026

Learn how to build a resilient Linux time synchronization architecture using Chrony. This guide walks through configuring NTP client and server roles, hardening time traffic with Network Time Security (NTS), and debugging production clock drift.

Linux

Managing Linux Kernel Modules with DKMS and modprobe: Automatic Driver Rebuilds

October 9, 2026

Upgrading your Linux kernel often breaks third-party drivers like custom NICs, Wi-Fi adapters, or proprietary controllers. Discover how to pair DKMS with modprobe for automated driver recompilation and bulletproof kernel maintenance.

Linux

Mastering Linux Capabilities: Fine-Grained Process Permissions with getcap and setcap as a SUID Alternative

October 8, 2026

Linux Capabilities let you replace SUID with fine-grained privilege control — giving binaries only the specific permissions they need, nothing more. This guide covers getcap and setcap with practical examples for DevOps engineers managing production Linux servers.

Linux

Automated Linux Log Rotation with Logrotate: Compression, Permissions, and Disk Space Prevention

October 7, 2026

Uncontrolled log growth can fill your drives and crash production services. Learn how to set up automated log rotation with Logrotate, configure gzip compression, preserve user permissions, and prevent disk outages.

Linux

Securing Linux Servers with AppArmor: Custom Profiles and Sandboxing Guide

October 2, 2026

A practical field guide to sandboxing production Linux services with AppArmor. Compare MAC architectures, build custom profiles with aa-genprof, and stop privilege escalation attacks cold.

Linux

Stop Digging Through Logs: Use Logwatch for Daily Linux Health Reports

September 21, 2026

Stop wasting time manually searching through system logs. This guide shows you how to use Logwatch to automate log analysis and send daily summaries to your inbox, helping you catch server issues before they become disasters.

Linux

Build and Distribute Custom .deb Packages: A Practical Guide

September 20, 2026

Ditch the messy scripts. Learn how to create professional .deb packages to streamline software distribution and dependency management on Debian and Ubuntu.

Networking

Installing and Configuring OpenNMS Horizon on Linux: Enterprise Network Monitoring with SNMP Auto-Discovery and Threshold Alerting

August 27, 2026

A six-month production review of OpenNMS Horizon on Ubuntu Linux, covering SNMP auto-discovery across 180+ network devices, threshold alerting with hysteresis, and performance collection setup. Includes complete installation steps and real configuration examples.

Linux

Build Your Own Custom Ubuntu ISO: A Practical Guide to Cubic

August 12, 2026

Ditch the repetitive setup scripts. This guide shows you how to use Cubic to create a custom Ubuntu ISO with pre-installed tools, specific kernels, and tailored configurations.

DevOps

Stop Overpaying for Hosting: Build Your Own PaaS with Dokku on Ubuntu

August 8, 2026

Tired of manual server configurations? Learn how to build your own personal PaaS using Dokku on Ubuntu. Deploy apps with a single git push and automate your SSL and databases.