posts~/posts
Every published post on one page: the long-form field guides and the original LinkedIn write-ups.
81 of 81 posts
How DeploySentinel AI turns a failed ECS deployment into evidence-backed root-cause analysis with Amazon Bedrock and a human-approved rollback via Step Functions.
DevOps Doctor is an open-source Codex plugin that gathers evidence from your own CLIs and repository to explain failed GitLab pipelines and plan safe rollbacks.
Build a production-ready CI/CD pipeline with GitHub Actions and Docker, including secure image promotion, caching, rollout gates, and rollback strategy.
Understand Kubernetes auto scaling with a practical example covering HP VP Cluster Autoscaler, metrics, and the common tuning mistakes teams make.
Learn how to secure Docker containers in production with hardened images, non-root users, runtime controls, secret handling, and supply-chain checks.
A practical ECS vs EKS deep dive for production teams comparing operations, cost, scaling, security, deployment patterns, and when each platform wins.
A step-by-step GitOps guide with ArgoCD covering repository structure, application definitions, sync policy, promotion flow, and production guardrails.
Design better Terraform modules with stable interfaces, versioning, validation, composition rules, and practical patterns for reusable infrastructure.
Set up centralized logging with Elasticsearch, Logstash, and Kibana using a production-minded ELK design, parsing strategy, retention plan, and alerting workflow.
Build a solid Prometheus and Grafana monitoring setup with exporters, scrape configs, alert rules, dashboards, and practical production guidance.
A practical blue-green deployment guide covering routing, database safety, rollback timing, health checks, and where the strategy works best.
Use canary deployments safely with staged traffic shifts, success criteria, observability, and rollback rules for real production services.
A practical FinOps guide to optimizing AWS costs with tagging, rightsizing, storage policy, compute commitments, and engineering habits that last.
Compare core DevSecOps tool categories across code, containers, dependencies, IaC, and secrets so you can build a practical security pipeline.
Design self-healing infrastructure with health checks, automated remediation, event-driven response, and safe control limits that prevent repeated failure.
Improve infrastructure monitoring with practical signal design, alert strategy, dependency context, and dashboards that help operators act faster.
Build an effective CI/CD pipeline for microservices with shared build standards, contract testing, image promotion, and service-specific deploy control.
Reduce Docker image size and speed up builds with practical optimization techniques that also improve security and deployment consistency.
Learn Kubernetes networking fundamentals including pod IPs, Services, DNS, Ingress, and how traffic actually moves through a cluster.
Manage secrets safely in DevOps pipelines and production systems with practical patterns for storage, injection, rotation, access control, and auditing.
See how to scale an application on AWS with a real architecture example covering stateless compute, data bottlenecks, caching, queues, and rollout safety.
Review common production issues in DevOps and the practical fixes that reduce outage time, from DNS and certificates to capacity, queues, and bad deploys.
I recently tackled a common but expensive challenge in AWS: the hidden cost of public IPv4 addresses. In a setup with dozens of ECS Fargate tasks, my "In-use Public IP" charges...
Most "DevOps problems" aren't tech problems. They're just organizational chaos wearing a YAML hoodie. We love to buy tools to fix culture. It never works. If you want to actuall...
Take your professional growth to the next level. Get one full year of LinkedIn Premium at no cost through eligible Microsoft 365 bundles. The perfect way to level up your profes...
We're hiring a UI/UX Designer We're looking for a creative UI/UX Designer to help shape meaningful digital experiences. Location: Jalandhar, Punjab (On-site) Interested? Apply d...
$ git commit -m "New portfolio live." I wanted a portfolio that actually reflects my day-to-day work, so I built a CLI-themed portfolio to showcase my DevOps projects. It was bu...
In today's AI world, almost everyone is using AI to write code. The feature runs. The API responds. The UI looks fine. So we assume the code is good. But here's the uncomfortabl...
Excited to share that I've successfully completed Semester-1 of my M.Tech in Cloud Computing from BITS Pilani. This semester helped me build a strong foundation across several c...
If DevOps stops, the business feels it immediately. Because DevOps isn't just tools — it's the crew keeping systems afloat. In a world where uptime, scale, and security are non-...
Stop treating your AI models like standard microservices. They're not. And they deserve better. I did what most of us do at first. I took a production-ready model, wrapped it in...
AWS goes down. Azure follows. Cloudflare joins the party. At this point I'm not even troubleshooting… I'm just sitting here thinking, if the clouds keep crashing, what's the pla...
As a DevOps engineer, I've basically accepted that AWS ECS Mumbai has mood swings. Once or twice a month, it just… decides it's done with life. Deploy? Maybe. Pull images? If it...
Every dev's new daily ritual: - Buy tokens. - Hit "Generate." - Pray the AI gods are in a good mood today. Sometimes it delivers pure poetry — clean code, perfect logic, not a b...
Remember the AWS outage on October 20th? Six hours down. Over 100+ services affected. Millions of users impacted. Everyone's talked about the RC multi-region setups, and resilie...
Earned my Gemini for DevOps Engineers credential from Google Cloud Skills Boost. Excited to keep exploring how AI is transforming DevOps!
"Lost PEM? No SSH? SSM dead? Don't panic — AWS always leaves a backdoor for those who know where to look." Yesterday I ran into one of those heart-sinking moments: an EC2 instan...
GitLab's 2017 "oops" moment One command. Wrong server. 6 hours of production data… gone. What went wrong? - A spam attack overloaded their DB → replication lag. - An engineer tr...
Being a DevOps Engineer is simple. You just… - Write code like a developer - Manage infra like a sysadmin - Debug pipelines like Sherlock Holmes - Secure everything like a hacke...
DevOps + MLOps = The Future of Engineering As DevOps engineers, we've mastered CI/CD, automation, observability, and security. But here's the thing: AI is everywhere, and deploy...
It's an IP Geolocation & Health Analyzer that lets you: - Pinpoint any IP's city, region, and country - Run Fraud Risk Analysis with detailed scoring - Check overall IP security...
Honored to receive the Director's Award - Behind the Scenes Hero. In DevOps, you don't usually get noticed for things not breaking. You build systems that recover before anyone...
Excited to share that I attended the AWS Summit India Online 2025 on June 26! Key Points from the Sessions - Focus on Generative AI: Learned how AWS services like Amazon Bedrock...
I'm happy to share that I've started my Master's degree at Birla Institute of Technology and Science, Pilani!
Running Containers on Graviton with ECS: Faster, Cheaper, and Worth It. Alright, let's talk shop. If you're deploying containerized workloads in AWS and not paying attention to...
Outdated Tools in Modern DevOps It's time we acknowledge that some tools just haven't kept up - Jenkins? Still waiting for the build to finish. - Maven? XML PTSD is real. - Pupp...
Are Your APIs Secure? Probably Not. Introducing Vulnerability Finder With AI API security is often overlooked — until something breaks or is breached. With my new Chrome Extensi...
What 2.5 Years of DevOps Incidents Taught Me (The Hard Way): The simplest explanation is usually right… Unless you're trying to explain it to management, then good luck. Logs li...
Upcoming Change in AWS: Default AMI Shifting to AL2023 AWS is transitioning the default Amazon Machine Image to Amazon Linux 2023. This is an important change that DevOps engine...
DevOps without Shell is like cat without /etc/passwd — technically possible, but you're missing the point. Shell scripting remains one of the most fundamental skills for any Dev...
DevOps is a Piece of Cake? Think Again! Hold my coffee... Ah, DevOps. The magical land where code deploys itself, pipelines never fail, and production is always stable. Right? W...
66.9+ crore views — truly staggering! As a DevOps Engineer, I deeply admire the incredible scalability, traffic management, and real-time optimizations that made this possible....
My Journey to Passing the AWS Certified Developer Associate (DVA-C02) AWS certifications have become a powerful way to validate cloud expertise and stand out in the tech industr...
Another Milestone Unlocked! I'm thrilled to share that I've officially earned my second AWS certification – the AWS Certified Developer – Associate! This journey has been both c...
How Does AWS Know Which Account Launched an EC2 Instance? Ever wondered what happens behind the scenes when you launch an EC2 instance? How does AWS track which account is reque...
Apache vs Nginx: The Battle of Web Servers! Ever wondered which web server is right for your project? Let me break it down in a way that won't put you to sleep! The Quick Story:...
AWS ECS vs. EKS: Which Container Service Fits Your Needs? Choosing between Amazon Elastic Container Service (ECS) and Amazon Elastic Kubernetes Service (EKS) depends on your spe...
Excited to share this milestone! I'm honoured to be recognized as the Star of the Month at Masters' Union. This achievement is a reminder of the incredible journey of growth, te...
Mastering Server Access with Termius – The Ultimate SSH Client! Managing servers on the go? Tired of clunky SSH clients? Termius might just be your new best friend! I've been us...
Docker Best Practices: From 1.2GB to Just 10MB! If you're using bloated Docker images, you're wasting time, money, and resources. Let's fix that. Here's how I shrank a 1.2GB ima...
AI Showdown: DeepSeek-V3 vs. ChatGPT-o1 The AI world is buzzing with excitement! DeepSeek-V3 is taking on the industry heavyweight ChatGPT-o1, and here's why you should care.
Time for a Server Upgrade? Let's Talk About Why It's Worth It! Let's have a quick real talk about something every IT professional has debated: Should we replace our instance ser...
Why the World's Biggest Companies Host Their Servers in Ireland? Ever wondered why Ireland has become the go-to destination for global companies to set up their servers? It's no...
DevOps Engineer: The Most Misunderstood Role in Tech Ever wondered why the role of a DevOps Engineer even exists? I got triggered today, and I'm here to clear some misconception...
Serverless Computing: A Game-Changer or Just Hype? Imagine building applications without worrying about servers, scaling, or maintenance. Sounds like a dream, right? Well, serve...
Why AWS Should Be Your First Cloud Provider to Learn as a DevOps Engineer, SRE, or Platform Engineer. Are you starting your journey into the world of cloud computing and wonderi...
How Microsoft Azure is Transforming the Middle East: A Strategic Expansion The Middle East is undergoing a digital revolution, and Microsoft Azure is at the forefront of this tr...
Old School DevOps vs. New School DevOps: How Far Have We Come? DevOps has come a LONG way — from humble beginnings to driving innovation at the speed of light. But how do "old s...
Container Image Bloat Large container images can become a hidden productivity and cost killer, affecting deployment speed, storage expenses, and overall performance. Challenges:...
Attention Linux Admins & DevOps! Linux is a powerhouse for servers and development, but with great power comes great responsibility. Here are some common mistakes that can trip...
Redis OSS vs. ElastiCache for Valkey: A Comprehensive Comparison Both Redis OSS and ElastiCache for Valkey have their merits. Your choice should align with your team's operation...
AWS has announced Amazon EKS Auto Mode, a groundbreaking feature for Amazon Elastic Kubernetes Service (EKS) that takes the complexity out of running Kubernetes clusters. With E...
Supercharge Your Server Security with Real-Time SSH Monitoring! Server security is crucial in today's world. I've developed a Bash script to automate SSH login monitoring, keepi...
One Feature of AWS S3 That No One Asked For Amazon S3 now supports up to 1 million buckets per AWS account! If you ever thought 100 buckets weren't enough, this update is for yo...
Simplifying Process Monitoring with Bash Scripting Tired of manually monitoring CPU usage? This simple Bash script can: - Check if a process is using too much CPU - Kill it if i...
Mastering Blue-Green Deployments: Strategies for Zero-Downtime Success Blue-Green deployment is a strategy that often comes up, but many struggle to explain it clearly. Here's t...
Docker Best Practices for Node.js Applications: Avoiding Common Mistakes Docker streamlines app development and deployment across environments. Yet, common mistakes can lead to...
Using Cloudflare Workers for SEO and Subdomain Integration The Problem: My main domain (mojahidulhaque.in) needed to integrate blog content hosted separately on a subdomain (blo...
Automating GitHub Deployments with a Webhook and Secure Node.js Script Today, I wanted to share a quick look behind the scenes at a script I recently implemented to streamline d...
Automating Server Setup with a Bash Script Hey everyone! I wanted to share a bash script I wrote to streamline the initial setup of a new server. Setting up servers can be repet...
I am thrilled to announce that I have successfully completed my AWS Solutions Architect Associate certification! Special thanks to Tarun Gupta and Prince Joal — your guidance an...