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Virtualization tutorial - IT technology blog

KVM/Proxmox Snapshot Management: Don’t Let the ‘Undo’ Button Become a Data Loss Disaster

By admin June 15, 2026

Managing KVM and Proxmox snapshots is more than just clicking a button. Learn how to use QEMU Guest Agent, handle snapshot chains, and optimize disk performance for 100% data safety.

Centos

Installing Node.js and PM2 on CentOS Stream 9: Secrets to Keeping Your App Alive at 2 AM

By admin June 14, 2026

Learn how to install Node.js LTS and configure PM2 professionally on CentOS Stream 9. This guide helps your application auto-start, manage logs effectively, and optimize server performance.

Monitoring

Grafana Mimir: An ‘Infinite’ Prometheus Metrics Storage Solution on Object Storage

By admin June 14, 2026

Running out of disk space due to Prometheus? Discover how to install Grafana Mimir for long-term metrics storage on Object Storage. A cost-effective, high-performance solution for DevOps.

Linux

Boost HDD Speed by 10x with bcache: Use an Old SSD as Cache on Linux

By admin June 14, 2026

Don't let slow HDDs bottleneck your system. Here is a detailed guide on using bcache to turn an SSD into a cache for your HDD, multiplying IOPS at a minimal cost.

Virtualization

Deploy KVM ‘Lightning Fast’ with virt-install: Forget the GUI, CLI is King

By admin June 14, 2026

Learn how to use virt-install to deploy KVM virtual machines via the command line. A detailed guide from basic setup to automation with Cloud-init for Linux admins.

Docker

Running GUI Applications in Docker: An A-Z Guide to X11 Forwarding

By admin June 14, 2026

Learn how to run graphical applications (GUI) like Firefox and GIMP in Docker on Linux. Detailed guide on X11 Forwarding, GPU optimization, and container security.

Fedora

Deploying PostgreSQL on Fedora Server: Securing with SELinux and Firewalld

By admin June 14, 2026

A guide to installing production-ready PostgreSQL on Fedora Server. Focuses on SELinux security, Firewalld configuration, and performance optimization tips from real-world experience.

Artificial Intelligence tutorial - IT technology blog

Installing Continue on VS Code: Build Your Own Premium AI Assistant to Replace GitHub Copilot

By admin June 14, 2026

Install Continue on VS Code for a free, secure AI assistant. Detailed guide on connecting Ollama, Claude 3.5, and using Context for more efficient programming.

Network

NetBox: Retiring Excel and Building a Network Infrastructure Source of Truth

By admin June 14, 2026

Managing IPs via Excel is every IT engineer's nightmare. This guide helps you deploy NetBox on Docker to build a centralized, professional IPAM/DCIM system.

Security

Secure Internal Dashboards with OAuth2 Proxy: Block Unauthorized Access in a 15-Minute Setup

By admin June 14, 2026

Don't leave your internal dashboards passwordless! Detailed guide on using OAuth2 Proxy to add a Google/GitHub authentication layer in just 15 minutes.

Deploying MySQL 8 on Fedora Server: Production Configuration Guide and SELinux Troubleshooting

Vagrant + KVM/Libvirt: How to Double Your VM Speed on Linux

Gitolite: Ultra-lightweight Git Server Management for 1GB RAM VPS

MongoDB + Python: From Basic CRUD to Advanced Aggregation with PyMongo

Guide to Using git-sizer: “Rescuing” Bloated and Sluggish Git Repositories

Process Python Data Like a Pro with Counter, defaultdict, and deque

VMware vSphere NIOC Configuration Guide: Eliminating Noisy Neighbors and Optimizing Bandwidth

Deploying Metabase with Docker: A Self-Service BI Solution to Replace Manual Data Extraction

Packaging Linux Applications: A Complete Guide to flatpak-builder on Fedora

MySQL 9.0 and VECTOR: Embedding Storage Solution for AI Apps Without a Secondary DB

KVM/Proxmox Snapshot Management: Don’t Let the ‘Undo’ Button Become a Data Loss Disaster

Installing Node.js and PM2 on CentOS Stream 9: Secrets to Keeping Your App Alive at 2 AM

Grafana Mimir: An ‘Infinite’ Prometheus Metrics Storage Solution on Object Storage

Boost HDD Speed by 10x with bcache: Use an Old SSD as Cache on Linux

Deploy KVM ‘Lightning Fast’ with virt-install: Forget the GUI, CLI is King

Running GUI Applications in Docker: An A-Z Guide to X11 Forwarding

Deploying PostgreSQL on Fedora Server: Securing with SELinux and Firewalld

Installing Continue on VS Code: Build Your Own Premium AI Assistant to Replace GitHub Copilot

NetBox: Retiring Excel and Building a Network Infrastructure Source of Truth

Secure Internal Dashboards with OAuth2 Proxy: Block Unauthorized Access in a 15-Minute Setup