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Docker Security: Blocking Malicious Images with Docker Content Trust (DCT)

By admin September 15, 2026

Don't let your server become a cryptomining farm by pulling suspicious images. Learn to configure Docker Content Trust (DCT) to only run signed containers.

VMware

Backing Up VMware ESXi VMs to Synology NAS with Active Backup for Business: A 3-2-1 Data Protection Strategy

By admin September 14, 2026

A guide to configuring Active Backup for Business on Synology NAS to back up VMware ESXi virtual machines, drawing from six months of real-world production experience. Implement a complete 3-2-1 data protection strategy without expensive backup software.

Ubuntu

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

By admin 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.

Development

API Testing and Monitoring with Hurl: A Lightweight Alternative to Postman

By admin September 14, 2026

Forget Postman's bloat. Hurl lets you test APIs using plain text files, consumes minimal RAM, and integrates seamlessly into your CI/CD pipeline.

Fedora

Mastering OpenSCAP on Fedora: Vulnerability Scanning and PCI-DSS/STIG Security Auditing

By admin September 13, 2026

A guide to using OpenSCAP on Fedora to automate vulnerability scanning and PCI-DSS/STIG compliance. A solution that saves SysAdmins 90% of security audit time.

Linux

Pool “Surplus” Hard Drives into a Massive NAS with mergerfs on Linux

By admin September 13, 2026

Stop struggling with scattered hard drives. Learn how to pool drives of different sizes using mergerfs on Linux to create a flexible Home Server storage system.

Fedora

Customizing GNOME on Fedora: Building a High-Productivity Coding Environment

By admin September 13, 2026

Discover how to optimize Fedora Workstation for developers. A detailed guide on using GNOME Tweaks, Extension Manager, and specialized fonts to boost coding productivity.

Network

Microsecond Time Synchronization on Linux with PTP: When NTP is Not Enough

By admin September 13, 2026

NTP is no longer enough for 5G or HFT systems. Learn how to configure PTP (IEEE 1588) on Linux to achieve microsecond accuracy using linuxptp.

Virtualization

Guide to Deploying Red Hat OpenShift Local (CRC) on Linux: Bringing Enterprise Kubernetes to Your Local Machine

By admin September 13, 2026

A detailed guide on installing Red Hat OpenShift Local (CRC) on Linux. This article shares experience in resource configuration, KVM optimization, and practical tips for running an Enterprise Kubernetes cluster on your personal machine.

Database

Unit Testing for PostgreSQL with pgTAP: Don’t Let the Database Be a ‘Blind Spot’ During Deployment

By admin September 13, 2026

Don't let database errors ruin your project. Learn how to use pgTAP to professionally automate schema, function, and trigger testing for PostgreSQL.