ITNotes - Page 42 of 84 - From Terminal to Cloud

Kubernetes RBAC Complete Guide: Configuring Role, ClusterRole, and ServiceAccount for Least Privilege Access

April 25, 2026

Kubernetes RBAC is your first line of defense against lateral movement inside a cluster. This guide walks through creating custom Roles, ClusterRoles, and ServiceAccounts with least privilege — including verification steps and common pitfalls to avoid.

HomeLab

Self-Hosted E-Book Library with Calibre-Web on Docker: Manage, Read, and Sync Books Anywhere

April 25, 2026

Learn how to deploy Calibre-Web on Docker to create a self-hosted e-book library accessible from any browser or e-reader app. This step-by-step guide covers Docker Compose setup, OPDS catalog configuration, and tips for keeping your library in sync across all devices.

Linux

Linux /proc and /sys: Talking Directly to the Kernel and Hardware

April 25, 2026

Ditch the wrappers. Learn how to interact directly with the Linux kernel and hardware using the /proc and /sys virtual filesystems for faster, lighter monitoring.

Programming

Ditch the Bloat: Building Lean Desktop Apps with Tauri and Rust

April 25, 2026

Tired of bloated Electron apps? Learn how to build high-performance desktop software with Tauri and Rust. We cover everything from environment setup to automated distribution.

HomeLab

Ditch Discord: Self-Hosting Matrix Synapse and Element with Docker

April 25, 2026

Take back your digital sovereignty. This guide shows you how to deploy a private, end-to-end encrypted Matrix chat server using Docker, PostgreSQL, and Element for a professional-grade HomeLab setup.

HomeLab

Deploy FreshRSS on Docker: Self-Host Your Own RSS Reader and Take Back Control of Your News Feed

April 24, 2026

Deploy FreshRSS on Docker to self-host your own RSS reader — no cloud dependency, no algorithm, just the feeds you chose. This guide walks through quick setup, PostgreSQL config, reverse proxy, mobile sync via the Google Reader API, and practical tips from daily use.

Database

PostgreSQL Point-in-Time Recovery (PITR): Restore Your Database to Any Exact Second

April 24, 2026

PostgreSQL Point-in-Time Recovery (PITR) lets you restore your database to any exact second — not just to the last backup. This guide walks through WAL archiving setup, base backup configuration, and step-by-step recovery from real incidents like accidental deletes or corruption.

Build a Local Voice Assistant with Whisper and Ollama: Fully Offline Speech Recognition and LLM Response

April 24, 2026

A practical guide to building a fully offline voice assistant using Whisper for speech recognition and Ollama for local LLM responses — no cloud APIs, no latency overhead, complete privacy. Based on six months of production experience with measurable performance data.

DevOps

Building an Internal Developer Portal with Backstage: Centralize Docs, Tools, and DevOps Workflows

April 24, 2026

Backstage is an open-source Internal Developer Portal that centralizes your team's service catalog, documentation, and DevOps workflows in one place. This step-by-step guide walks you through installing Backstage locally, registering services in the catalog, enabling TechDocs, and setting up basic health monitoring so your portal stays reliable.

Building a Production-Ready REST API with Spring Boot, Spring Security, JPA, and Docker

Building a Laravel REST API with Docker: From Zero to Production in 2024

Mastering Prometheus Alertmanager: Routing, Grouping, Inhibition, and Smart Alert Delivery to Telegram and PagerDuty

Securing IoT Devices at Home and in Your HomeLab: VLAN Segmentation, Firmware Monitoring, and Blocking Suspicious Connections

Mastering Protocol Buffers: Schema-first API Design for Multi-language Projects

Deploy FerretDB on Docker: MongoDB-Compatible Open Source Database Built on PostgreSQL

Practical Web Security: Hunting XSS, SQLi, and IDOR with Burp Suite Community

Deploy OpenCTI on Docker: Build Your Own Threat Intelligence Lab

Beyond Boolean Soup: Architecting Robust React Logic with XState

Why Is My Linux Load Average High Despite Low CPU Usage?

Kubernetes RBAC Complete Guide: Configuring Role, ClusterRole, and ServiceAccount for Least Privilege Access

Self-Hosted E-Book Library with Calibre-Web on Docker: Manage, Read, and Sync Books Anywhere

Linux /proc and /sys: Talking Directly to the Kernel and Hardware

Ditch the Bloat: Building Lean Desktop Apps with Tauri and Rust

Ditch Discord: Self-Hosting Matrix Synapse and Element with Docker

Deploy FreshRSS on Docker: Self-Host Your Own RSS Reader and Take Back Control of Your News Feed

PostgreSQL Point-in-Time Recovery (PITR): Restore Your Database to Any Exact Second

Build a Local Voice Assistant with Whisper and Ollama: Fully Offline Speech Recognition and LLM Response

Building an Internal Developer Portal with Backstage: Centralize Docs, Tools, and DevOps Workflows