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Monitoring tutorial - IT technology blog

How to Install and Configure Thanos to Scale Prometheus: Long-Term Metrics Storage and Global View Across Multiple Clusters

By admin May 29, 2026

Thanos extends Prometheus with long-term metrics storage on S3/MinIO and a global view across multiple clusters in a single dashboard. A step-by-step setup guide using Docker Compose and Kubernetes, with practical operational tips.

Virtualization

QEMU ARM64 Emulation on Linux: Running Raspberry Pi OS and Android for IoT Development

By admin May 29, 2026

A practical guide to installing QEMU and emulating ARM64 on Linux to run Raspberry Pi OS and Android without real hardware. Covers real-world IoT development workflows: cross-compilation, Docker buildx for ARM64, snapshots, and shared folders.

Git

Git Maintenance: Boosting Performance for Repositories with Thousands of Commits

By admin May 29, 2026

Is your Git repository slowing down? Use git maintenance to automatically optimize, reducing git status and fetch times for large projects effectively.

Database

Turning PostgreSQL into a Graph Database with Apache AGE: When SQL and Cypher Converge

By admin May 29, 2026

Learn how to turn PostgreSQL into a powerful Graph Database with Apache AGE. Detailed guide from installation to Cypher queries for social networks and recommendation systems.

Network

Layer 4 Load Balancing at Hardware Limits: Deploying IPVS and ipvsadm on Linux

By admin May 29, 2026

Facing Load Balancer bottlenecks under high traffic? Learn to deploy IPVS (IP Virtual Server) on Linux for high-performance Layer 4 load balancing handling millions of packets per second.

Centos

Installing Fail2ban on CentOS Stream 9: Battle-Tested Brute-Force Protection

By admin May 29, 2026

Install Fail2ban on CentOS Stream 9 to effectively block SSH Brute-force attacks. Detailed guide on jail.local configuration, SELinux fixes, and Firewalld rich-rules integration.

Python

Ditch print()! Debug Python Like a Pro with the Icecream Library

By admin May 29, 2026

Don't let print() clutter your code. Discover how to use the Icecream library for professional Python debugging, with automatic variable and line logging that can be disabled with a single command.

Virtualization

How to Install and Use gVisor to Secure Containers: Running Docker with an Isolated Kernel

By admin May 28, 2026

gVisor is a sandbox runtime for Docker that places a virtual kernel layer (Sentry) between the container and the host kernel to prevent container escape. This guide covers installing runsc, configuring Docker, and verifying the sandbox with practical command examples.

Artificial Intelligence tutorial - IT technology blog

Using Vision LLMs (Moondream, LLaVA) for Automated UI Error Screenshot Analysis — A Practical Guide

By admin May 28, 2026

A practical guide to using Vision LLMs (Moondream, LLaVA) to automatically analyze UI error screenshots and extract structured information with Python. Compares OCR, Cloud API, and Vision LLM approaches — then walks through a real implementation with working code samples.

Database

Percona Monitoring and Management (PMM) Setup Guide: Advanced MySQL and PostgreSQL Monitoring

By admin May 28, 2026

PMM is a tool that gives you deep visibility into MySQL and PostgreSQL performance. This guide covers quick setup and real-world Query Analytics optimization tips.

Installing and Managing Fedora Onyx: Experience the “Immutable” OS with Budgie Desktop

Fedora AI Lab Setup Guide: Building a Professional Machine Learning Environment Without CUDA Errors

Modular Monolith with Node.js: A Lifesaver for Projects Before Considering Microservices

Design APIs Effortlessly with TypeSpec: Say Goodbye to Maintaining Thousand-Line OpenAPI Files

Stop ‘Snail-Paced’ Code with Lighthouse CI and GitHub Actions

Defeating SQL Injection in MySQL Production using ProxySQL Firewall

Automating PostgreSQL Partitioning with pg_partman: A Lifesaver for Terabyte-Scale Tables

Netdisco: Effortless Network Topology Automation and Switch Port Management

Snapshot Testing with Pytest-snapshot: Stop Struggling with Manual Assertions

Say Goodbye to Passwords: Implementing Magic Links with Node.js and Nodemailer

How to Install and Configure Thanos to Scale Prometheus: Long-Term Metrics Storage and Global View Across Multiple Clusters

QEMU ARM64 Emulation on Linux: Running Raspberry Pi OS and Android for IoT Development

Git Maintenance: Boosting Performance for Repositories with Thousands of Commits

Turning PostgreSQL into a Graph Database with Apache AGE: When SQL and Cypher Converge

Layer 4 Load Balancing at Hardware Limits: Deploying IPVS and ipvsadm on Linux

Installing Fail2ban on CentOS Stream 9: Battle-Tested Brute-Force Protection

Ditch print()! Debug Python Like a Pro with the Icecream Library

How to Install and Use gVisor to Secure Containers: Running Docker with an Isolated Kernel

Using Vision LLMs (Moondream, LLaVA) for Automated UI Error Screenshot Analysis — A Practical Guide

Percona Monitoring and Management (PMM) Setup Guide: Advanced MySQL and PostgreSQL Monitoring