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Virtualization tutorial - IT technology blog

Optimize Proxmox VE in 5 Minutes with Helper Scripts: Remove Subscription Nag and Configure Standard Repos

By admin June 4, 2026

Forget tedious manual configurations. This guide shows you how to use Helper Scripts to remove the Subscription nag and optimize Proxmox VE in just minutes.

Virtualization

Mount and Edit qcow2, vmdk Files Directly on Linux Using NBD: Fast, Simple, No VM Boot Required

By admin June 4, 2026

Forget booting rescue ISOs! This guide shows you how to mount qcow2 and vmdk files directly to a Linux host using NBD to fix configs and recover VM data in minutes.

Linux

Mastering /proc and /sys: Inspecting Linux Internals Without Third-Party Tools

By admin June 3, 2026

Explore the power of /proc and /sys on Linux. Learn how to read process info, configure the kernel, and monitor hardware directly from the command line without installing extra software.

Security

Mastering Linux PAM: Hardening Passwords and Stopping Brute-force Attacks for Your Server

By admin June 2, 2026

A guide to upgrading Linux PAM security: Enforcing strong passwords, auto-locking accounts during brute-force attacks, and integrating Multi-Factor Authentication (MFA).

Virtualization

Proxmox + InfluxDB + Grafana: The Secret to Enterprise-Grade VM Monitoring

By admin June 1, 2026

A guide to integrating Proxmox VE with InfluxDB and Grafana for professional monitoring. Solve metric storage issues and overcome default dashboard limitations.

Linux

Linux Optimization: Using nice and ionice to Prevent Server Freezes During Heavy Tasks

By admin May 31, 2026

Effectively control CPU and I/O usage with nice and ionice. A detailed guide on Linux server optimization for running heavy tasks like backups and file compression without impacting web or database performance.

Fedora

Speed Up Fedora with DNF5: The Ultra-Fast and Lightweight C++ Package Manager

By admin May 31, 2026

DNF5 is a significant speed boost for Fedora, offering faster package management and substantial RAM savings thanks to its C++ rewrite. This article shares real-world experiences and optimized commands for developers after six months of use.

Linux

Pinning Processes to CPU Cores: How to Use taskset and numactl to Maximize Linux Performance

By admin May 28, 2026

A guide on using taskset and numactl to pin processes to CPU cores on Linux. Reduce latency, optimize cache locality, and boost performance for heavy applications.

Linux

Mastering systemd-run: ‘Instant’ CPU and RAM Limits for Linux Scripts

By admin May 24, 2026

Don't let backup or crawling scripts crash your server. Learn how to use systemd-run to limit RAM, CPU, and I/O instantly—a must-have tool for SysAdmins.

Linux

Saving RAM on Linux Servers with systemd Socket Activation

By admin May 24, 2026

Learn how to optimize Linux server RAM using systemd Socket Activation. This technique ensures services only start on demand, reducing resource usage and speeding up boot times.