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Networking tutorial - IT technology blog

Stop Configuring Switches One by One: Master Network Automation with Python and Netmiko

April 10, 2026

Ditch manual SSH logins. Learn how to use Python and Netmiko to automate Cisco and Juniper batch configurations, error handling, and multi-vendor management.

Linux

Boost Linux Performance with zRAM: The Memory Compression Guide

April 10, 2026

Turn your RAM into a high-speed compressed storage device. This guide shows you how to set up zRAM on Linux to boost performance, save SSD life, and effectively double your usable memory.

Security

Deploy Keycloak on Docker: Build a Centralized IAM and SSO System for Your Apps

April 9, 2026

Running auth logic in every application separately creates security gaps, duplicated code, and user frustration. This guide walks through deploying Keycloak on Docker with PostgreSQL to build a centralized IAM and SSO system — one login, consistent security policies, and MFA across all your apps.

DevOps

Testing Infrastructure as Code with Terratest: A Production-Ready Guide

April 9, 2026

Stop relying on 'terraform plan'. Learn how to use Terratest to provision real resources, verify their state, and automate your IaC testing in production pipelines.

DevOps

Managing Git Secrets Safely with Mozilla SOPS and Age: A Lightweight HashiCorp Vault Alternative

April 9, 2026

Mozilla SOPS combined with Age lets you store encrypted secrets directly in Git — version-controlled and diff-able — without running a secrets management server. This guide covers installation, team setup, CI/CD integration, and key rotation for a lightweight alternative to HashiCorp Vault.

Networking

Keepalived & VRRP: Build a Floating IP for High Availability on Linux

April 9, 2026

Keepalived implements VRRP on Linux to give your servers a shared floating IP address. When the primary node fails, the standby automatically claims the VIP in seconds. This step-by-step guide covers installation, configuration, health check scripts, and failover testing on Ubuntu/Debian.

Programming

Beyond REST: Building High-Performance gRPC APIs with Go and Python

April 8, 2026

Is JSON parsing slowing down your microservices? Learn how to implement high-performance gRPC APIs using Go and Python to slash latency and CPU usage.

From Chatbots to Agents: A Practical Guide to Function Calling with OpenAI and Claude

April 8, 2026

Bridge the knowledge gap between LLMs and the real world. This guide covers how to implement Function Calling in OpenAI and Claude using Python to build reliable AI agents.

HomeLab

Deploy Immich on Docker: Self-Hosted Photo and Video Backup for Your HomeLab

April 8, 2026

Tired of paying for Google Photos storage or worrying about your memories sitting on someone else's server? Immich is a self-hosted photo and video backup solution that runs on Docker and gives you full control. This guide walks through the complete setup from docker-compose deployment to mobile auto-backup and Google Photos migration.

Networking

Setting Up a Squid Proxy Server on Linux: Access Control, Content Filtering, and Bandwidth Caching

April 8, 2026

Squid proxy server gives you fine-grained control over your network's outbound traffic — access control by IP or user, content filtering via domain blocklists, and HTTP caching to reduce bandwidth costs. This guide walks through a complete production-ready setup on Linux.