Manufacturing SMB server room showing failed backup infrastructure timeline and ₹3 crore data recovery disaster in Raipur India

Manufacturing Backup Disaster: ₹3 Crore Lost, OSS Solution

A real wake-up call for every SMB: How Shakthi Auto Components in Raipur lost 5 years of production data in one power surge, the ₹3 crore impact, and the complete open source backup solution DevOps Den built for ₹1.5 lakhs/year

January 23, 2026 · Uttam Jaiswal
ArgoCD backup and disaster recovery architecture diagram showing etcd backup, GitOps state persistence, and high availability setup

ArgoCD Backup and Disaster Recovery: Never Lose GitOps State

From understanding where ArgoCD stores its configuration to implementing automated backups and high availability—a practitioner’s guide to making your GitOps control plane bulletproof

January 20, 2026 · Uttam Jaiswal
Sun's path showing Winter Solstice and Makara Sankranti with sidereal zodiac

Does Uttarayana Really Begin on Makara Sankranti?

The Winter Solstice happens in December, but Makara Sankranti falls in January. This explores the fascinating astronomy, calendar systems, and tradition that explain why both are correct—and why they continue to drift apart.

January 17, 2026 · Uttam Jaiswal
GitLab migration journey from SaaS cloud to secure self-hosted infrastructure with OIDC/SAML authentication

GitLab Migration Guide: SaaS to Self-Hosted in 5 Weeks

How Team Mavericks at DevOps Den migrated 100+ GitLab projects behind the corporate firewall—complete with the challenges faced, lessons learned, and production-ready automation scripts that got them across the finish line

January 17, 2026 · Uttam Jaiswal
ArgoCD orchestrating multi-cluster GitOps deployments across E2E, DigitalOcean, and AWS

ArgoCD Multi-Cluster GitOps: From Install to Production

A practitioner’s guide to production-grade GitOps, automation, and Kubernetes migrations—from first install to managing 50+ applications across E2E, DigitalOcean, and AWS EKS clusters

January 15, 2026 · Uttam Jaiswal
HashiCorp Vault securing Kubernetes secrets with multi-cluster architecture

Vault Kubernetes Secrets: HA Raft Multi-Cluster Journey

A real-world journey with HashiCorp Vault, HA Raft, and multi-cluster secret injection, built from production lessons, not lab demos.

January 14, 2026 · Uttam Jaiswal
Form submission flowing through a pipeline to email notifications

Email Notifications for Cloudflare D1 Forms

You built a comments system. Users are submitting feedback. But you only find out when you remember to check the D1 console. By then, someone has been waiting days for a response. This post covers three approaches to getting notified when form submissions arrive: instant emails, daily digests, and webhook-based notifications. Each has trade-offs in complexity, cost, and flexibility. The Problem The comments system from my previous post stores submissions in Cloudflare D1. Moderation happens manually via SQL queries in the D1 console. This works, but it requires actively checking for new submissions. ...

January 11, 2026 · Uttam Jaiswal
Three converging pathways representing technology choices leading to a glowing center symbolizing the power of choice

Open Source for Enterprises: The Power of Choice

A pragmatic introduction to open source for enterprises, focusing on choice, governance, and real-world decision making rather than ideology or cost alone.

January 3, 2026 · Uttam Jaiswal
Isometric illustration showing a static site document connected to a cloud database and security shield - representing the D1 and Turnstile architecture

Build Comments System: Cloudflare D1 + Pages Functions

Static sites are fast, secure, and simple to deploy. But they lack one thing out of the box: interactivity. Comments, likes, and other dynamic features traditionally require a backend. This tutorial walks through how I built a comments and likes system for this site using Cloudflare’s serverless stack: D1 (SQLite database), Pages Functions (serverless API), and Turnstile (spam protection). No external services. No third-party tracking. Everything runs on Cloudflare’s edge network. ...

January 1, 2026 · Uttam Jaiswal
From traditional mustard oil to modern data centers - a visual metaphor for institutional risk perception

From Mustard Oil to Open Source: The Quiet Hypocrisy of "Accepted Risk"

What a traditional cooking oil taught me about how institutions think about risk, familiarity, and trust, and why the same flawed logic shapes enterprise attitudes toward open source software.

December 25, 2025 · Uttam Jaiswal