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Docker-in-Docker (DinD) vs Docker-out-of-Docker (DooD): A Practical CI/CD Runner Setup Guide

By admin June 3, 2026

A practical guide to configuring Docker-in-Docker (DinD) and Docker-out-of-Docker (DooD) for building Docker images in CI/CD pipelines. Covers trade-off comparisons, real-world examples with GitLab Runner and GitHub Actions, plus optimization tips from production.

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.

Artificial Intelligence tutorial - IT technology blog

Mastering DeepSeek-R1 on Linux: Optimizing “Home-Grown” Reasoning AI for Peak Performance

By admin June 3, 2026

A guide to installing DeepSeek-R1 on Linux: How to choose the right version for your VRAM, optimize Ollama environment variables, and tips for faster offline AI reasoning.

Docker

Dockerize WordPress: Accelerate Your MariaDB and Redis Cache Stack for Production

By admin June 3, 2026

A professional guide to Dockerizing WordPress with MariaDB and Redis Cache. Optimize performance, security, and container management using Docker Compose v2.

Python

Automating File Monitoring with Python Watchdog: Stop Polling and Start Listening

By admin June 3, 2026

Instead of using resource-heavy polling loops, use Python Watchdog for real-time file monitoring. A detailed guide on installation and practical applications.

Monitoring

Grafana Pyroscope: Hunting Down CPU and RAM “Hogs” Directly on Production

By admin June 3, 2026

A detailed guide on using Grafana Pyroscope for Continuous Profiling. Find the exact lines of code causing high CPU usage and memory leaks on production with minimal overhead.

VMware

Mastering VMware Host Profiles: The Ultimate Way to Standardize ESXi Cluster Configurations

By admin June 3, 2026

A detailed guide on using VMware Host Profiles to standardize ESXi Cluster configurations. Learn how automation eliminates manual errors and improves vSphere infrastructure management.

Ubuntu

Varnish + Nginx: The Ultimate Lifesaver for High-Traffic Websites on Ubuntu

By admin June 3, 2026

Varnish Cache is a leading solution for boosting website speed and reducing server load. Learn how to configure Varnish with Nginx on Ubuntu based on real-world expert experience.

Ubuntu

Installing and Using Nala on Ubuntu: A Package Manager with a Clean Interface, Parallel Downloads, and Better Performance Than APT

By admin June 2, 2026

Nala is a modern APT front-end for Ubuntu that provides a clean interface, parallel package downloads, and install history rollback. This guide covers installation, fetching the fastest mirrors, and integrating Nala into your daily server administration workflow.

Monitoring

Integrating Nginx VTS Module with Prometheus and Grafana: Per-Domain Traffic Monitoring

By admin June 2, 2026

When hosting multiple domains on a single Nginx server, standard system metrics aren't enough to pinpoint which domain is causing an issue. This guide covers compiling the Nginx VTS Module, configuring Prometheus to scrape per-virtual-host metrics, and importing a Grafana dashboard to monitor per-domain traffic in real time.

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

Docker-in-Docker (DinD) vs Docker-out-of-Docker (DooD): A Practical CI/CD Runner Setup Guide

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

Mastering DeepSeek-R1 on Linux: Optimizing “Home-Grown” Reasoning AI for Peak Performance

Dockerize WordPress: Accelerate Your MariaDB and Redis Cache Stack for Production

Automating File Monitoring with Python Watchdog: Stop Polling and Start Listening

Grafana Pyroscope: Hunting Down CPU and RAM “Hogs” Directly on Production

Mastering VMware Host Profiles: The Ultimate Way to Standardize ESXi Cluster Configurations

Varnish + Nginx: The Ultimate Lifesaver for High-Traffic Websites on Ubuntu

Installing and Using Nala on Ubuntu: A Package Manager with a Clean Interface, Parallel Downloads, and Better Performance Than APT

Integrating Nginx VTS Module with Prometheus and Grafana: Per-Domain Traffic Monitoring