ITNotes - Page 25 of 119 - From Terminal to Cloud

Networking tutorial - IT technology blog

Self-Hosted VoIP PBX with FreePBX and Asterisk on Linux: From Zero to Working SIP Trunk

June 30, 2026

Running your own VoIP PBX with FreePBX and Asterisk cuts costs sharply and puts you in full control of your phone system. This guide covers installation on Linux, connecting a SIP trunk to the outside world, setting up internal extensions, and fixing the one-way audio problem that catches almost every first-time build.

Networking

High-Speed Packet Processing with DPDK on Linux: Installation and Building Your First Network App

June 29, 2026

DPDK bypasses the Linux kernel network stack entirely, letting userspace applications process packets at line rate using poll mode drivers. This guide covers installation, hugepage configuration, NIC binding, building the l2fwd example, and production tuning tips for CPU isolation and NUMA awareness.

Deploy MLflow on Docker: Track ML Experiments, Manage Model Registry in Real MLOps Pipelines

June 29, 2026

A hands-on guide to deploying MLflow on Docker Compose with PostgreSQL and MinIO, covering experiment tracking, model versioning, and Model Registry stage management for real MLOps pipelines. Built from the experience of a 2 AM production incident caused by missing model lineage.

Networking

Build a Virtual Network Lab with EVE-NG on Ubuntu: Simulate Cisco, Juniper, and MikroTik for CCNA/CCNP

June 29, 2026

After six months of daily use, EVE-NG on Ubuntu has replaced my entire physical network lab for CCNA and CCNP study. This guide covers installation, adding Cisco IOS and MikroTik RouterOS images, and building your first multi-vendor topology — all from a browser, on hardware that costs under $300.

Linux

Mastering ssh-agent and SSH Key Forwarding on Linux: Manage Multiple Keys and Chain Servers Securely

June 29, 2026

Managing multiple SSH keys across servers gets messy fast. This guide lays out four approaches — from a single shared key to ssh-agent with forwarding — with honest trade-offs for each, then walks through the full setup for chaining server connections securely while keeping private keys on your local machine.

Linux

Linux Disk Partition Management with parted, gdisk, and fdisk: GPT/MBR Guide

June 29, 2026

Compare fdisk, gdisk, and parted for Linux disk partitioning — learn when to use each tool, how to create and resize GPT/MBR partitions, and how to recover from a corrupted partition table with practical commands.

Local AI Video Generation with CogVideoX and Wan2.1: Text-to-Video on Linux Without Cloud APIs

June 29, 2026

Running text-to-video AI locally eliminates cloud API costs and rate limits. This guide covers deploying CogVideoX and Wan2.1 on Linux with practical Python scripts for automated video batch production — no cloud API required.

HomeLab

Deploy Tdarr on Docker: Automated Distributed Video Transcoding for HomeLab Storage Optimization

June 28, 2026

Tdarr is a distributed video transcoding system that automatically converts your media library to H.265/AV1 to reclaim storage space. This guide covers deploying Tdarr on Docker, setting up remote worker nodes across your HomeLab, enabling GPU transcoding with NVENC, and practical tips from running it in production.

Database

pg_cron: Schedule PostgreSQL Tasks Inside the Database Without OS Cron

June 28, 2026

pg_cron is a PostgreSQL extension that schedules SQL jobs — VACUUM, data archiving, threshold notifications — directly inside the database as a background worker. No external cron, no credential sprawl, no silent failures. This guide covers installation, three real-world use cases, and the practices that keep pg_cron solid in production.

Building a Multi-Agent AI System with Microsoft AutoGen v0.4: Orchestrate Specialized Agents for Data Analysis and Code Generation

June 28, 2026

Learn how to build a multi-agent AI system with Microsoft AutoGen v0.4 by creating a Planner, Data Analyst, and Code Reviewer agent that collaborate to automate data analysis workflows. This step-by-step guide covers installation, agent configuration, team setup, and monitoring — everything a junior developer needs to get started.

Speed Up Python with Numba JIT: Make Heavy Data Processing 100x Faster

CDK for Terraform (CDKTF) with Python: Deploy Cloud Resources Without Writing HCL

Clean Up Your Java Code: A Practical Guide to Vavr

Stop Deploying Broken Docker Images: A Guide to Container Structure Tests

Mastering Golang Memory Profiling: A Practical Guide with pprof

Stop Storing Secrets in Git: A Guide to 1Password Connect on Kubernetes

Building a Network Performance Testbed: High-Speed Testing with TRex on Linux

Stop Writing Boilerplate: A Guide to Python Dataclasses, Attrs, and Pydantic

Build Your Own Private 5G Network: A Hands-On Guide with Open5GS and srsRAN

Mastering Socket.IO in Node.js: Building Secure, Production-Ready Real-Time Apps

Self-Hosted VoIP PBX with FreePBX and Asterisk on Linux: From Zero to Working SIP Trunk

High-Speed Packet Processing with DPDK on Linux: Installation and Building Your First Network App

Deploy MLflow on Docker: Track ML Experiments, Manage Model Registry in Real MLOps Pipelines

Build a Virtual Network Lab with EVE-NG on Ubuntu: Simulate Cisco, Juniper, and MikroTik for CCNA/CCNP

Mastering ssh-agent and SSH Key Forwarding on Linux: Manage Multiple Keys and Chain Servers Securely

Linux Disk Partition Management with parted, gdisk, and fdisk: GPT/MBR Guide

Local AI Video Generation with CogVideoX and Wan2.1: Text-to-Video on Linux Without Cloud APIs

Deploy Tdarr on Docker: Automated Distributed Video Transcoding for HomeLab Storage Optimization

pg_cron: Schedule PostgreSQL Tasks Inside the Database Without OS Cron

Building a Multi-Agent AI System with Microsoft AutoGen v0.4: Orchestrate Specialized Agents for Data Analysis and Code Generation