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Ubuntu Server 22.04 Management with Cockpit: Say Goodbye to CLI Fatigue

By IT From Zero July 19, 2026

Managing Ubuntu Server 22.04 is no longer a command-line nightmare. With Cockpit, you can monitor CPU, RAM, logs, and update your system directly in your web browser.

Artificial Intelligence tutorial - IT technology blog

Flowise: Install and Build Chatbots and RAG Pipelines with a No-Code Drag-and-Drop Interface

By IT From Zero July 18, 2026

Flowise is an open-source tool that lets you build chatbots, RAG pipelines, and AI workflows through a drag-and-drop interface — no coding required. This guide covers installation via Docker/npm and walks through building a chatbot with Ollama and a RAG pipeline for PDF document Q&A, step by step.

Development

Secure Webhooks in Node.js: HMAC-SHA256 Verification and Proper Retry Handling

By IT From Zero July 18, 2026

An unauthenticated webhook is an easy target for forged requests — this article covers how to protect a Node.js endpoint with HMAC-SHA256, handle idempotency to prevent duplicate processing on retries, and implement exponential backoff when calling downstream services. Includes complete working code and curl commands to test immediately.

Python

Automating Docker with Python: From Bash Scripts to a Professional SDK

By IT From Zero July 18, 2026

No more typing Docker commands by hand. Learn to use the Docker SDK for Python to automate Container, Image, and Network management — with real-world error handling experience included.

Docker

Docker Scout: A ‘Magnifying Glass’ for Security Vulnerabilities and How to Patch Images from CLI to CI/CD

By IT From Zero July 18, 2026

Learn how to use Docker Scout to scan for security vulnerabilities, patch critical CVEs, and automate testing with GitHub Actions to protect your images.

Ubuntu

Building Your Own S3-Compatible Object Storage with MinIO on Ubuntu Server

By IT From Zero July 18, 2026

A detailed guide on installing MinIO Object Storage on Ubuntu Server. The perfect AWS S3 alternative to optimize storage costs and boost application performance.

Teaching AI Agents Long-Term Memory with Mem0: A Solution for Python Developers

By IT From Zero July 18, 2026

Is your AI forgetting user preferences? Learn how to integrate Mem0 into Python to build long-term memory, making your AI Agents smarter and more personalized.

Mastering MergeKit: The Ultimate Trick to ‘Mix’ LLM Models Without Heavy GPUs

By IT From Zero July 18, 2026

A detailed guide on using MergeKit to merge LLM models on Linux. Save on GPU costs and optimize AI performance using SLERP, TIES, and DARE algorithms.

Ubuntu

Centralized Server Management with Apache Guacamole on Ubuntu: RDP and SSH Directly in Your Browser

By IT From Zero July 18, 2026

A guide to installing Apache Guacamole on Ubuntu for accessing RDP, SSH, and VNC via the browser. A centralized, secure, and clientless management solution.

Python

Python JSON Serialization: 10x Speed Boost with orjson and msgspec

By IT From Zero July 18, 2026

Is Python's default json library too slow? Explore orjson and msgspec—the duo that boosts data processing by 10x with native support for datetime, UUID, and high-speed validation.

Configuring BFD with FRRouting on Linux: Sub-Second Link Failure Detection for OSPF and BGP

Clean Up Stale Remote-Tracking Branches with git remote prune and git fetch –prune

Implementing Single Sign-On (SSO) with Keycloak and Next.js: A Complete OpenID Connect (OIDC) Guide

Enable MySQL Slow Query Log and Use pt-query-digest to Find Database Bottlenecks

MetaGPT with Python Guide: Automate Software Development with Multi-Agent Systems

Configuring SR-IOV on KVM/Proxmox: Share 10GbE NICs with Near Bare-Metal Performance

Docker Autoheal Guide: Automatically Restart Unhealthy Containers

APScheduler in Python: Production-Ready Background Job Scheduling for Backend

How to Reclaim Storage Space (Space Reclamation / UNMAP) on VMware ESXi

How to Use Bitnami Sealed Secrets on Kubernetes: Secure GitOps Secrets Management

Ubuntu Server 22.04 Management with Cockpit: Say Goodbye to CLI Fatigue

Flowise: Install and Build Chatbots and RAG Pipelines with a No-Code Drag-and-Drop Interface

Secure Webhooks in Node.js: HMAC-SHA256 Verification and Proper Retry Handling

Automating Docker with Python: From Bash Scripts to a Professional SDK

Docker Scout: A ‘Magnifying Glass’ for Security Vulnerabilities and How to Patch Images from CLI to CI/CD

Building Your Own S3-Compatible Object Storage with MinIO on Ubuntu Server

Teaching AI Agents Long-Term Memory with Mem0: A Solution for Python Developers

Mastering MergeKit: The Ultimate Trick to ‘Mix’ LLM Models Without Heavy GPUs

Centralized Server Management with Apache Guacamole on Ubuntu: RDP and SSH Directly in Your Browser

Python JSON Serialization: 10x Speed Boost with orjson and msgspec