system administration – ITFROMZERO

User Management on Fedora: Time to Say Goodbye to /etc/passwd for systemd-homed

By admin July 15, 2026

Manage Fedora users more professionally with systemd-homed. A detailed guide on creating LUKS-encrypted users, limiting resources, and ultra-fast data migration.

Linux

Speed Up Linux: Optimize I/O by Moving ‘Hot’ Data to RAM with tmpfs

By admin June 29, 2026

No matter how fast your disk is, RAM is hundreds of times faster. This guide walks you through using tmpfs to move temporary data into RAM, cut I/O Wait, and instantly speed up your Linux server.

Fedora

Handling Crashes on Fedora: Automating Debug and Bug Reporting with ABRT

By admin June 25, 2026

Fedora apps crashing with no explanation? Learn how to use ABRT to automatically catch errors, analyze coredumps, and report bugs like a seasoned engineer.

Python

Mastering psutil: The Ultimate ‘Weapon’ for System Monitoring with Python

By admin June 22, 2026

Server crashing due to memory leaks? Discover how to use psutil in Python to build automated monitoring systems and manage CPU, RAM, and Disk like a pro.

Linux

Mastering OverlayFS: How to Create an ‘Undo Button’ for Your Linux System

By admin June 22, 2026

Learn how to use OverlayFS on Linux to protect system data. This article provides a detailed guide on the Copy-on-Write mechanism and how to create a secure sandbox environment.

Virtualization

UrBackup Guide: Professional Centralized Image and File Backup Solution

By admin June 8, 2026

A detailed guide on deploying UrBackup for centralized Windows and Linux VM backups. An open-source solution featuring powerful data deduplication and fast image backups.

VMware

Guide to Joining VMware ESXi to Active Directory: Centralized Management and Professional Permissions

By admin June 7, 2026

Managing local users on individual ESXi servers is manual and poses security risks. This guide helps you join ESXi to Active Directory for centralized management and professional authorization.

Network

Configuring VRF on Linux: A ‘Divide and Conquer’ Solution for Routing Tables

By admin June 5, 2026

Manage multi-tenant networks more effectively with VRF on Linux. Learn how to isolate routing tables, handle IP conflicts, and run isolated applications.

Linux

Mastering Core Dumps on Linux: Pro Tips for Troubleshooting Segmentation Faults

By admin June 1, 2026

No more guessing when apps crash! A detailed guide on configuring Core Dumps on Linux to catch Segmentation Faults and using gdb to find the exact line of code causing the error.

Network

Deploying Multicast on Linux: A Bandwidth-Saving Solution for Large-Scale Transmission Systems

By admin May 31, 2026

Optimize internal network bandwidth by configuring Multicast on Linux. Detailed guide on setting up PIM-SM, IGMP, and troubleshooting TTL and RPF check errors.