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Proxmox HA: The Ultimate System Rescue at 2 AM Without Leaving Your Bed

By IT From Zero April 10, 2026

A hands-on guide to configuring Proxmox VE Cluster and High Availability (HA). This solution enables automatic VM recovery during physical server failures, ensuring maximum uptime for businesses.

VMware

Mastering VMware Backup and Restore: Better Safe Than Sorry

By IT From Zero April 10, 2026

Learn how to build a robust 3-2-1 VMware backup strategy. This guide clarifies the difference between Snapshots and Backups, and covers using Veeam and GhettoVCB for total data protection.

Linux

Escape ‘Dependency Hell’ on Linux with Nix: The Package Manager That Saved Me at 2 AM

By IT From Zero April 10, 2026

Nix Package Manager is a lifesaver for isolating software, supporting instant rollbacks, and completely eliminating library conflict errors on Linux. This guide provides practical installation and usage tips for DevOps and Sysadmins.

Docker

Docker Compose Watch: A Game-Changer for a Seamless Docker Development Experience

By IT From Zero April 10, 2026

Docker Compose Watch automatically syncs code to containers the moment you save. Learn how to skip manual image builds and make Docker development as smooth as running locally.

Fedora

Managing Multiple Node.js, PHP, and MariaDB Versions: Fedora’s DNF Modularity “Secret Weapon”

By IT From Zero April 10, 2026

Forget nvm or unofficial repos. With DNF Modularity on Fedora, switching between Node.js 18, 20 or PHP 7.4, 8.2 is simpler and safer than ever.

Fedora

Building Personal Fedora Repos with Copr: No More Manual ‘make install’!

By IT From Zero April 10, 2026

Learn how to use Copr to build and manage your personal Fedora Repository. A detailed guide from RPM packaging to automatic updates via DNF for developers.

MySQL

MySQL Stored Procedures and Functions: Optimizing Business Logic and Boosting Performance

By IT From Zero April 9, 2026

A practical guide to using Stored Procedures and Functions in MySQL, drawn from real-world experience. Learn how to optimize business logic, reduce latency, and improve the security of your database-backed systems.

Ubuntu

Installing NVIDIA Drivers on Ubuntu: Don’t Let Your High-End GPU Perform Like a Snail

By IT From Zero April 9, 2026

Installing NVIDIA drivers on Ubuntu is easy if you know how to use PPA and ubuntu-drivers. This article shares experiences on avoiding black screen errors and optimizing performance for AI/Gaming.

Monitoring

Monitoring Windows Server with Prometheus and Windows Exporter: Tracking CPU, RAM, and Services in Detail

By IT From Zero April 9, 2026

A guide to installing Windows Exporter, configuring Prometheus scrape targets, and setting up Grafana dashboards to monitor CPU, RAM, disk, and Windows Services on Windows Server — including practical alert rules and tips for avoiding alert fatigue.

Virtualization

Optimizing KVM/Proxmox Resources: Stop VMs from Draining Your Hardware

By IT From Zero April 9, 2026

Managing KVM/Proxmox resources effectively is easy when you know how. Guide on optimizing CPU Type, configuring VirtIO SCSI, and RAM Ballooning tips to prevent bottlenecks.

Optimizing Redis RAM with HyperLogLog and Bloom Filter: Counting and Deduplicating at Scale

Building an Event-Driven Microservices System with Apache Kafka and NestJS: From Producer and Consumer to Dead Letter Queue (DLQ)

Installing and Configuring Rootless Docker: Run Docker Without Root to Protect Your Host

Configuring a PPPoE Server on Linux Using rp-pppoe for ISP Labs

A Guide to DiskCache in Python: Safe Multi-Process Disk Caching Without Redis

How to Configure Host sFlow on Linux: Real-Time Network Traffic and KVM Monitoring

Diagnosing and Resolving Deadlocks in PostgreSQL: Inspecting Lock Trees and Configuring Proper Timeouts

ESXi Host Configuration Backup and Restore with PowerCLI and ESXCLI: Saving Your Virtualization Cluster During Outages

Guide to VFIO PCIe Passthrough on Linux KVM: GPU Passthrough for Windows VMs

Integrating OpenTelemetry into Python: Practical Microservices Monitoring Strategies

Proxmox HA: The Ultimate System Rescue at 2 AM Without Leaving Your Bed

Mastering VMware Backup and Restore: Better Safe Than Sorry

Escape ‘Dependency Hell’ on Linux with Nix: The Package Manager That Saved Me at 2 AM

Docker Compose Watch: A Game-Changer for a Seamless Docker Development Experience

Managing Multiple Node.js, PHP, and MariaDB Versions: Fedora’s DNF Modularity “Secret Weapon”

Building Personal Fedora Repos with Copr: No More Manual ‘make install’!

MySQL Stored Procedures and Functions: Optimizing Business Logic and Boosting Performance

Installing NVIDIA Drivers on Ubuntu: Don’t Let Your High-End GPU Perform Like a Snail

Monitoring Windows Server with Prometheus and Windows Exporter: Tracking CPU, RAM, and Services in Detail

Optimizing KVM/Proxmox Resources: Stop VMs from Draining Your Hardware