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Monitoring tutorial - IT technology blog

Healthchecks.io: The Pro Secret to Monitoring Silent Cron Job Failures

By admin April 3, 2026

A backup script suddenly stopping is a disaster for any SysAdmin. Discover how to use Healthchecks.io to monitor Cron Jobs effectively using the 'Dead Man's Snitch' mechanism.

Artificial Intelligence tutorial - IT technology blog

Building AI Agents with LangGraph: Solving Complex Workflows and Self-Correction

By admin April 2, 2026

A detailed guide on building advanced AI Agents using LangGraph and Python. This article focuses on state management, loop handling, and practical experience in optimizing API costs.

Ubuntu

Upgrading Ubuntu Terminal with Zsh & Oh My Zsh: Don’t Let Bash Slow You Down

By admin April 2, 2026

Installing Zsh and Oh My Zsh on Ubuntu is the fastest way to turn your Terminal into a powerful assistant. This guide details the installation and plugin configuration to supercharge your typing speed.

Docker

Docker Hogging All Your Disk Space? Pro Tips to Clean Up Images, Containers, and Volumes to Save Your Server

By admin April 2, 2026

Docker hogging disk space is a DevOps nightmare. This article shares how to use prune commands effectively and configure log rotation to rescue your server from storage issues.

MySQL

MySQL Point-in-Time Recovery (PITR): Restore Your Database to Any Second with Binary Log

By admin April 2, 2026

A hands-on guide to MySQL Point-in-Time Recovery (PITR) using Binary Log — restore your database to the exact second before an accidental DELETE or corruption event. Covers locating the binlog position, restoring from backup, replaying transactions, and skipping bad statements.

VMware

How to Install VMware ESXi 8 for Free on a Physical Server and Create Your First VM

By admin April 2, 2026

A step-by-step guide to installing VMware ESXi 8 for free on a physical server: hardware prep, creating a bootable USB, BIOS configuration, and creating your first VM through the web UI — with practical tips from real-world experience.

Fedora

Fedora Server: Professional Python Deployment with Gunicorn and Nginx

By admin April 1, 2026

Don't let 502 Bad Gateway errors stop you. A guide to deploying Python on Fedora with Gunicorn, Nginx, and precise SELinux configuration based on real-world experience.

Centos

Configuring GlusterFS on CentOS Stream 9: Building a Fault-Tolerant Data Storage ‘Fortress’

By admin April 1, 2026

A detailed guide on installing GlusterFS on CentOS Stream 9. This article shares practical experience in configuring Replicated Volumes, optimizing Firewall settings, and handling split-brain issues to ensure data safety.

Network

Configuring VPN Clients on Linux: Battle-Tested Experience with WireGuard, OpenVPN, and IPsec

By admin April 1, 2026

A hands-on guide to configuring WireGuard, OpenVPN, and IPsec on Linux. Learn how to troubleshoot routing, DNS, and MTU issues from a system administrator's perspective.

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

Securing Python Source Code with PyArmor: Effectively Preventing Reverse Engineering and Protecting Intellectual Property

Feature-Sliced Design (FSD): A ‘Divide and Conquer’ Solution for Large-Scale React Projects

Building Professional CLIs with Node.js and Oclif: From Fragmented Scripts to Standardized Tools

Implementing Circuit Breaker in Python: Don’t Let a Faulty API Crash Your Entire System

Deploying FastNetMon: A Lightweight DDoS Detection Solution via NetFlow/sFlow

3 Pro GraphQL Security Tips: Don’t Hand Hackers the Keys to Your Kingdom

Securing Sudo with 2FA: The Final Defense Against Root Hijacking

Healthchecks.io: The Pro Secret to Monitoring Silent Cron Job Failures

Building AI Agents with LangGraph: Solving Complex Workflows and Self-Correction

Upgrading Ubuntu Terminal with Zsh & Oh My Zsh: Don’t Let Bash Slow You Down

Docker Hogging All Your Disk Space? Pro Tips to Clean Up Images, Containers, and Volumes to Save Your Server

MySQL Point-in-Time Recovery (PITR): Restore Your Database to Any Second with Binary Log

How to Install VMware ESXi 8 for Free on a Physical Server and Create Your First VM

Fedora Server: Professional Python Deployment with Gunicorn and Nginx

Configuring GlusterFS on CentOS Stream 9: Building a Fault-Tolerant Data Storage ‘Fortress’

Configuring VPN Clients on Linux: Battle-Tested Experience with WireGuard, OpenVPN, and IPsec