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When Automation Becomes the Enemy: Lessons from AWS's October 2025 DynamoDB Outage
Last week, AWS published their post-mortem for the massive October 19-20 service disruption that brought down DynamoDB and cascaded through dozens of services in us-east-1. Having spent the weekend digesting this remarkably transparent report, I wanted to share some thoughts on what this incident teaches us about modern infrastructure operations. The Irony of Sophisticated Automation What…
Introducing the Preview Release of AI Toolkit for VS Code with MCP Server Integration
Visual Studio Code (VS Code) has just released a Preview version of its AI Toolkit, introducing a game-changing feature: MCP (Model Context Protocol) Server integration. This update is designed to empower developers, data scientists, and AI engineers to build more intelligent, connected AI applications seamlessly within the VS Code environment. Whether you’re just starting with generative AI or…
Optimize LLM Performance on Mac and Ubuntu
When working with large language models (LLMs) on a MacBook Pro with Apple’s M1 or M2 chips, or on Ubuntu with dual NVIDIA 2080 Ti GPUs, it’s essential to optimize performance and utilize GPU acceleration effectively. This blog post will explore how to install and use Ollama with GPU support, as well as other similar tools that provide OpenAI API compatibility. 1. Ollama on macOS with GPU…
From Idea to Deployment: A Complete Guide to Full-Stack Development with Cursor
Discover how to leverage Cursor AI’s powerful capabilities to streamline the entire development lifecycle for modern Go and Next.js applications. Introduction In today’s fast-paced development environment, having the right tools can make all the difference between meeting deadlines and falling behind. One tool that’s been gaining significant traction among developers is Cursor AI – an…
Cloud vs Open-Source: Comparing AWS, Azure, GCP Services
Modern enterprises face a pivotal choice between using cloud-native services from providers like AWS, Azure, and Google Cloud, versus deploying open-source or self-hosted tools that offer greater control. This comprehensive guide compares major cloud products to their open-source equivalents across key domains: Machine Learning platforms, Data Engineering & Analytics, DevOps CI/CD pipelines,…
Ansible Command Cheat Sheet
📦 Core Commands CommandDescriptionExampleansibleRun ad-hoc commands with modulesansible all -i inventory.yaml -m pingansible-playbookExecute a playbookansible-playbook -i inventory.yaml site.yamlansible-docView module or plugin documentationansible-doc copyansible-configDisplay current configurationansible-config listansible-inventoryInspect or validate your inventoryansible-inventory -i…
Chrome on macOS Cannot Access Router — Full Analysis and Fix
📌 Problem Overview When trying to access a local router via Chrome on macOS using the address http://192.168.3.1, Chrome displays an error like: “This site can’t be reached” “ERR_ADDRESS_UNREACHABLE” However: ✅ Safari can access the router without issue ✅ The network is fully functional ✅ Ping to the IP works perfectly via Terminal This strongly suggests Chrome-specific behavior is at…
The Rare Satisfaction of Finishing a Technical Book
I recently closed the last page of Real-World Next.js by Michele Riva, and something unusual struck me—I had actually finished a technical book from beginning to end. That doesn’t happen often. Like many developers, my usual approach to technical books is highly utilitarian. I read what I need, when I need it. The beginning of the book? Always carefully read. I can probably recite the structure…
A Fast Start with Ansible: Managing Your Servers Like a Pro
Ansible offers a streamlined, agentless way to manage your infrastructure — whether you’re operating in a cloud datacenter or orchestrating a smart homelab. In this guide, we’ll walk through setting up your Ansible project, securing secrets with Vault, verifying connection health, and executing your first playbooks across multiple inventories. Project Overview: idc35manager This setup is…
How to Fix SSH "Client_loop: send disconnect: Broken pipe" Error
Have you ever encountered the dreaded Client_loop: send disconnect: Broken pipe error while using SSH? It’s a frustrating issue, especially when you’re managing remote systems and lose your connection due to inactivity. Fortunately, it’s easy to fix with a few adjustments. What Causes This Error? This error typically appears when your SSH session remains idle for too long. After a certain period…
Practical Guide: Debugging Kubernetes Nodes and Managing Docker in Custom Setups
1. Diagnosing Kubernetes Node NotReady Issues Problem: Worker nodes node0 and node1 were stuck in NotReady status. Cause: CNI (Container Network Interface) plugin not initialized. Invalid subnet declaration in 10-bridge.conf (e.g., included hostname/IP instead of CIDR). Fix: Install CNI plugins: wget…
Running Local Docker Images in Minikube: A Quick Guide
Minikube allows you to run a single-node Kubernetes cluster locally, making it ideal for testing and development. However, Kubernetes typically pulls images from remote registries, which can be cumbersome when working with local Docker images. This guide explores two efficient methods to use your local Docker images within a Minikube cluster. Method 1: Load Local Docker Images into Minikube If…
Comprehensive Guide for Developers Working with C#, Python, TypeScript, and Go: Best Practices, Solutions, and Quick References
In today’s software development landscape, developers (I for example) often need to work with multiple programming languages to meet the diverse needs of different projects. This comprehensive guide offers a complete solution for developers who must use C# for Windows platform applications, Python for data science and machine learning, TypeScript for web development with React and Node.js, and Go…
Updating Deprecated Commands in "Kubernetes in Action"
Introduction: The book “Kubernetes in Action” by Marko Luksa is a valuable resource for learning Kubernetes. However, as Kubernetes evolves, some commands in the book have become deprecated. This post provides updated commands to ensure compatibility with the latest Kubernetes version. Original and Updated Commands: kubectl get rc Original Command: kubectl get rc Updated Command: kubectl get…
Troubleshooting Kubernetes Service Exposure with Minikube
Introduction In the world of Kubernetes, managing and exposing services can sometimes be a challenging task, especially when dealing with deprecated commands and network configurations. Recently, I encountered an issue while following instructions from the book Kubernetes in Action. The command kubectl run kubia --image=luksa/kubia --port=8080 --generator=run/v1 did not work due to its…
A Comprehensive Guide to Kubernetes Toolchains for Microservices
Kubernetes has become the de facto standard for managing containerized applications, particularly in the world of microservices. With Kubernetes, developers can seamlessly scale, manage, and automate deployments. However, managing a Kubernetes environment efficiently requires a robust set of tools to enhance the workflow, ensure smooth deployment, and monitor performance. In this detailed guide,…
How to Setup and Enable SSH on WSL and Access from Other Computers
In this guide, we’ll walk you through setting up SSH on Windows Subsystem for Linux (WSL) so that you can access your WSL instance from other computers, either on your local network or over the internet. We’ll cover everything from installing and configuring the SSH service to dealing with common errors like ssh.socket failures, port mapping, and IP address issues. Prerequisites: WSL 2 installed…