Latest Posts

• When Let's Encrypt Broke Our HL7 mTLS: A Certificate Incident Post-Mortem

  A public CA silently dropped the clientAuth EKU from renewed certificates, breaking our healthcare HL7 mTLS integration. Here's what happened, what we learned, and why self-managed CAs are the right choice for healthcare interoperability.

• EKS AL2023 Migration + Upgrade to 1.34 — Lessons Learned

  Lessons learned from upgrading EKS clusters from 1.32 to 1.34 with AL2023 migration, including the reasoning behind VPC-CNI version pinning at v1.19.2 and add-on compatibility assessment

• Kubernetes Architecture Deep Dive: Understanding Every Component

  Complete guide to Kubernetes control plane, worker nodes, and add-ons with real-world examples and troubleshooting

• Prometheus and Grafana: A Practical Monitoring Guide

  Learn how to set up Prometheus and Grafana for monitoring your infrastructure. From basic concepts to production-ready configurations for Docker, Kubernetes, and EC2 environments.

• Docker and Containers - From Fundamentals to Production

  Comprehensive guide to containers, Docker architecture, networking, volumes, multi-stage builds, security hardening, and production troubleshooting for mid-level engineers

• Add Automatic Watermarks to Your Photo Gallery (No Manual Editing Required)

  Client-side watermarking with Canvas API for permanent photo protection

• Migrating a Photo Gallery from GitHub to Cloudflare R2

  migrating using serverlsess workers

• Migrating to Cloudflare Pages Build Image v3 (Without Breaking Your Site)

  Upgrading Cloudflare build image

• Building an Instagram-Style Like Button with Cloudflare D1 (No Backend Required)

  Photo Gallery with like button

• Terraform AWS Multi-VPC Architecture Guide

  Building a production-ready multi-tier architecture with VPC peering, Auto Scaling, RDS, and ECS Fargate for log aggregation

• Kubernetes Real-World Troubleshooting Guide

  Production debugging scenarios with container crashes, config issues, and systematic troubleshooting workflows

• Kubernetes Network Troubleshooting Guide

  Real-world network debugging techniques for production Kubernetes

• AWS ECS Fargate Complete Guide - From Zero to Production

  Hands-on guide to deploying containerized applications with ECS Fargate, including ECR, IAM, secrets management, auto-scaling, and troubleshooting

• Day to Day Usage of GIT

  GIT usage

• Intro to Git: Version Control Basics

• Python Basics

  Python Crash Course basics

• Boot

  How linux OS boots

• Operating Systems 101: Linux Internals and Process Management

• Hello World

  This is my first ever post, hello world in different language