system administration – Page 2 – ITFROMZERO

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.

Linux

Linux Kiosk Mode with Openbox: Turn Old Computers into ‘Indestructible’ Information Stations

By admin May 15, 2026

Learn how to set up a professional Linux Kiosk Mode with Openbox. A solution to transform low-spec computers into stable, secure, and ultra-lightweight information stations.

Fedora

DNF History: The ‘Time Machine’ for Risk-Free Fedora System Tweaking

By admin May 14, 2026

Fedora system issues after an update? Don't worry, dnf history lets you rollback, undo, and manage your software installation history safely and quickly.

Linux

Mastering lsof on Linux: Pro Tips for Finding Processes Occupying Ports and Fixing ‘Too Many Open Files’ Errors

By admin May 14, 2026

Linux users shouldn't miss out on lsof for monitoring file descriptors and fixing 'Too many open files' errors. Check out 5 real-world troubleshooting tips from a system expert.

Monitoring

Configuring Monit: The “Lifesaver” that Automatically Restarts Linux Services at 3 AM

By admin May 12, 2026

Don't let server crashes ruin your sleep. Learn how to configure Monit to automatically monitor and restart Nginx and MySQL when issues occur.

MySQL

MySQL 5.7 to 8.0: A Safe Upgrade Path and Pitfalls to Avoid

By admin May 12, 2026

A practical guide to safely upgrading MySQL 5.7 to 8.0. Learn how to handle authentication errors, reserved keywords, and optimize performance post-upgrade.