system administration – Page 2 – ITFROMZERO

Mastering Nginx Stream Module: TCP/UDP Load Balancing for Databases, Redis, and MQTT

By admin May 27, 2026

A practical guide to using Nginx Stream Module for TCP/UDP load balancing for MySQL, Redis, and MQTT. Learn Layer 4 configuration, security optimization, and real-world troubleshooting tips.

Database

Barman: Professional PostgreSQL Production Backup Solution – From WAL Archive to PITR

By admin May 27, 2026

Don't let pg_dump keep you up at night. Detailed guide on using Barman for professional PostgreSQL backup management with second-precision data recovery (PITR).

VMware

VMware Storage DRS (SDRS) Mastery: No More ‘Night Shifts’ for Datastore Cleanup

By admin May 24, 2026

Forget staying up all night cleaning up VM storage. Here is a detailed guide on configuring VMware Storage DRS (SDRS) to automate load balancing and optimize Datastore Clusters based on real-world experience.

Ubuntu

Turn Ubuntu into a Print Server with CUPS: A Stable Printing Solution for Small Offices

By admin May 23, 2026

Learn how to set up a Print Server on Ubuntu using CUPS to share USB printers over a local network. A stable, energy-efficient solution that supports Windows, Linux, and macOS.

Ubuntu

Building Your Own Internal DNS Server with BIND9 on Ubuntu: A Solution to Replace Bulky Hosts Files

By admin May 23, 2026

Forget manual hosts file updates! This guide to installing BIND9 on Ubuntu Server helps you manage internal domains professionally, with practical tips to avoid system errors.

Fedora

Mastering Authselect on Fedora: Professional and Secure PAM Configuration Management

By admin May 19, 2026

Stop manual PAM editing! Learn how to use authselect on Fedora to securely manage system authentication, from SSSD configuration to handling faillock account lockouts.

VMware

Fixing the ‘The virtual machine is in use’ Error: How to Handle .lck Files to Rescue VMware VMs

By admin May 18, 2026

Is your VMware VM showing 'The virtual machine is in use' and causing stress? Check out this guide on safely deleting .lck files to unlock your VM on Workstation and ESXi.

Linux

Recover Linux Partitions and Data: A Practical Guide to TestDisk and PhotoRec

By admin May 16, 2026

Lost data or accidentally deleted a Linux partition? A practical guide on using TestDisk and PhotoRec to recover data quickly and safely from an expert.

Network

Monitor Linux Networks with ntopng: No More ‘Looking for a Needle in a Haystack’ During Lag

By admin May 15, 2026

Forget dry netstat commands. This guide helps you install ntopng on Linux for visual network monitoring, catching every IP causing bandwidth congestion.