admin, Author at ITNotes

Local Kubernetes: Why You Should Swap Minikube for kind or k3d

April 29, 2026

Ditch expensive cloud testing. Learn how to use kind and k3d to spin up local Kubernetes clusters in seconds, compare their performance, and automate your testing with GitHub Actions.

HomeLab

Stop Wasting Food: Self-Hosting Grocy on Docker for Smart Inventory

April 29, 2026

Tired of spoiled food and duplicate purchases? This guide shows you how to deploy Grocy on Docker, automate inventory with barcodes, and integrate it with Home Assistant.

Programming

Stop Breaking Your APIs: A Practical Guide to Consumer-Driven Contract Testing with Pact

April 29, 2026

Eliminate 'Integration Hell' and prevent API breaking changes. This guide shows you how to master Consumer-Driven Contract Testing using Pact and Node.js.

Security

Stop Trusting Tags: Secure Your Container Supply Chain with Cosign

April 29, 2026

Container tags are easily spoofed. Learn how to use Cosign and Sigstore to sign your images and protect your Kubernetes clusters from supply chain attacks.

Linux

Mastering Software RAID with mdadm: A Practical Guide to Linux Disk Redundancy

April 29, 2026

Don't let a drive failure take down your server. This guide shows you how to configure mdadm on Linux to create RAID 0, 1, 5, and 6 arrays for maximum uptime.

Linux

How to Migrate CentOS 7 to Rocky or AlmaLinux Using ELevate

April 29, 2026

CentOS 7 is officially EOL. This guide shows you how to use ELevate to perform a safe, in-place upgrade to Rocky Linux or AlmaLinux 8 without reinstalling from scratch.

Linux

Linux IPC: A Practical Guide to Pipes, Queues, Shared Memory, and Sockets

April 29, 2026

A deep dive into Linux IPC mechanisms. Learn when to use Pipes, Sockets, and Shared Memory, featuring performance tips and resource management strategies.

Security

Stop Shipping Vulnerabilities: Automating SAST with Semgrep

April 29, 2026

Catch vulnerabilities before they hit production. This guide shows you how to use Semgrep to automate security scans in your CI/CD pipeline, reducing manual review time and preventing costly leaks.

HomeLab

Installing Node-RED on Docker: A 6-Month Production Review for HomeLab Automation

April 29, 2026

Based on 6 months of 24/7 usage, this guide shows you how to deploy Node-RED on Docker, secure your flows, and integrate MQTT and Home Assistant for a professional HomeLab.