Posted inSecurity
Stop Trusting Tags: Secure Your Container Supply Chain with Cosign
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.
Posted inLinux
Mastering Software RAID with mdadm: A Practical Guide to Linux Disk Redundancy
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.
Posted inLinux
How to Migrate CentOS 7 to Rocky or AlmaLinux Using ELevate
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.
Posted inLinux
Linux IPC: A Practical Guide to Pipes, Queues, Shared Memory, and Sockets
A deep dive into Linux IPC mechanisms. Learn when to use Pipes, Sockets, and Shared Memory, featuring performance tips and resource management strategies.
Posted inSecurity
Stop Shipping Vulnerabilities: Automating SAST with Semgrep
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.
Posted inHomeLab
Installing Node-RED on Docker: A 6-Month Production Review for HomeLab Automation
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.
Posted inProgramming
Build a Type-Safe Full-Stack API with tRPC and TypeScript in Next.js — No Separate Schema Needed
tRPC lets you share TypeScript types between your Next.js backend and frontend with no code generation or separate schema files. This tutorial walks through setting up a type-safe full-stack API from scratch, so a renamed field on the server immediately breaks the client at compile time — not in production.
Posted inSecurity
OAuth 2.0 and OpenID Connect Security: Common Vulnerabilities and How to Implement Them Correctly
OAuth 2.0 and OpenID Connect are the backbone of modern authentication, but misconfiguration is common and costly. This guide covers the most frequent vulnerabilities — missing state parameters, open redirects, improper token validation — and shows you how to implement each step correctly with practical Python examples.
Posted inHomeLab
Self-Hosted Bookmark Manager with Hoarder on Docker: AI Summaries and Full-Text Search
Hoarder is a self-hosted bookmark manager that runs on Docker and adds AI-powered summaries and full-text search to every link you save. This guide walks through a complete Docker Compose setup, Ollama integration for local AI, and practical tips for daily use as a Pocket replacement.
Posted inNetworking
Linux Network Performance Monitoring with Prometheus and Grafana: A to Z Guide
Learn how to monitor Linux network performance using Prometheus, node_exporter, and Grafana. This guide covers installation, key PromQL queries for TCP retransmits and packet drops, Grafana dashboard setup, and production alerting rules — based on real-world experience tracking down silent network saturation issues.