sysadmin – Page 6 – ITFROMZERO

Monitoring tutorial - IT technology blog

Mastering Linux Server Temperature with lm-sensors: Don’t Wait for Your CPU to Overheat

By admin May 8, 2026

Installing lm-sensors is an essential step to protect your Linux server. This guide helps you monitor CPU temperature and fan speed with just a few simple commands.

Linux

Mastering Linux Kernel Modules: Pro Tips for Handling Drivers

By admin May 8, 2026

Don't let driver errors interrupt your workflow. Learn how to use modprobe, lsmod, and driver blacklisting techniques to optimize and troubleshoot Linux hardware like a pro.

Linux

Mastering GNU Screen: How to Keep Your Terminal Sessions Alive During SSH Disconnects

By admin May 7, 2026

Forget about connection drops ruining your server processes. A detailed guide on using GNU Screen to keep terminal sessions running in the background, manage multiple windows, and share screens for debugging.

Virtualization

VBoxManage: Master VirtualBox via CLI – Essential Pro-Tips for Sysadmins

By admin May 6, 2026

Learn how to use VBoxManage for professional VirtualBox management via CLI. This guide covers headless booting, hardware configuration, and automated backup scripts.

Ubuntu

Upgrading to Ubuntu Server 24.04 LTS: A Practical Guide to a Safe Finish

By admin May 6, 2026

A practical guide to upgrading Ubuntu Server 22.04 to 24.04 LTS. A safe 5-step process using Screen to prevent network drops and handle package conflicts for Sysadmins.

VMware

VMDK Shrinking Masterclass: Reclaim Hundreds of GBs for VMware ESXi and Workstation

By admin May 5, 2026

Detailed guide on how to shrink VMDK files in VMware Workstation and ESXi using SDelete, vmkfstools, and dd to reclaim hundreds of gigabytes of disk space.

VMware

Mastering OVF Tool: A Faster and More Stable VMware VM Migration Solution than GUI

By admin May 4, 2026

Say goodbye to browser-based VM upload errors. Discover how to use OVF Tool for fast, stable VMware VM exports and imports, including expert automation scripts.

Linux

Slow Linux Boot? Use systemd-analyze to Trace and Optimize Immediately

By admin May 3, 2026

Don't let your Linux server boot slowly. Learn how to use systemd-analyze to track down bottlenecks and effectively optimize boot time in just a few steps.

Ubuntu

Joining Ubuntu Server to Windows AD with SSSD: Centralized Management for Hundreds of Users

By admin May 3, 2026

Manually managing users on dozens of Ubuntu servers is a nightmare. This guide shows how to use SSSD to join Ubuntu Server to Windows AD for centralized management, automated home directories, and enhanced security.

Network

Implementing Dynamic Routing on Linux with FRRouting (FRR): From OSPF to BGP

By admin May 2, 2026

Instead of manual static route configuration, use FRRouting (FRR) to automate your Linux network. A detailed guide on practical OSPF and BGP setup.