DevOps
How to Create Users in Linux with useradd command?
The useradd command is one of the most fundamental tools for user management in Linux systems. It allows system administrators to create new user accounts, …
Tutorials & Guides
Hands-on DevOps, Cloud, and Kubernetes tutorials — from setup to production.
eBPF
What Is eBPF, and Why Is It Important?
eBPF This blog breaks down "Learning eBPF" in simple terms, assuming you're completely new to programming and Linux concepts. Don't worry if you don't know …
Journal
How to Build Nginx Smart Proxy Image with Multi-Domain Support
Prologue: The VisionIn the vast digital landscape where countless applications struggle to find their voice, where developers battle with manual configurations, and where SSL certificates …
Journal
How to Fix Cloudflare DNS Authentication Error 6003
The Great Migration: From Global API Keys to Secure TokensIn the early days of our infrastructure automation, we built a custom Nginx container image. This …
Journal
When Upgrades Expose Hidden Problems: The Traefik Deployment Journey
The Discovery An Ancient Version in a Modern StackIt started with a routine check of our infrastructure. We were reviewing our Traefik configuration.A quick check …
Journal
DevOps Story: How We Fixed 92 Blocked Migrations in One Day
Date: November 03, 2025Journey: From Legacy System to Updated VersionDuration: 730 Days Without Updates Prologue: The WakeUp CallIt was early morning when the first alert …
DevOps
How to Deploy website on AWS Amplify
Prerequisites 📋Before starting, make sure you have: Your AWS account Your website files About 45 minutes ⏰ GitHub account 🐙 Step 1: Understanding Git and …
Day -1: Kick Off Cloud Security with AWS Registration
Starting with AWS can seem daunting, but the registration process is straightforward. Below, each image you provided is used to explain every step in detail …
How to Automate Incident Response : How Q Developer Helped Me Automate a Daily Pain Point
AIPowered Incident Reporter: https://mrcloudbook.com/wpcontent/uploads/2025/07/challenge1.gif IntroductionAs a DevOps engineer, I spend countless hours documenting incidents. Every time something goes wrong, I have to manually extract information …