ITNotes - Page 92 of 119 - From Terminal to Cloud

CrowdSec on Linux: Moving Beyond Fail2Ban to Community-Powered Security

April 10, 2026

Move beyond Fail2Ban. Learn how to deploy CrowdSec on Linux to leverage community-driven threat intelligence and block automated attacks in real-time.

HomeLab

Turn Your HomeLab into a Powerhouse Remote Dev Station: A 6-Month Review of code-server on Docker

April 10, 2026

Host your own VS Code Server on Docker and turn any browser into a professional IDE. A 6-month production review of setup, security, and performance for HomeLab enthusiasts.

Networking

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.

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

CrowdSec on Linux: Moving Beyond Fail2Ban to Community-Powered Security

Turn Your HomeLab into a Powerhouse Remote Dev Station: A 6-Month Review of code-server on Docker

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

Boost Linux Performance with zRAM: The Memory Compression Guide

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

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

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

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