Series

Ops Migration Playbooks

Real production migration and incident playbooks focused on safe execution, root cause analysis, and rollback-first DevOps practices. Each post documents how real production issues were handled and fixed without downtime.

Deploying Apache Superset on Kubernetes (Helm): From Chaos to Production
Real-world failure analysis, custom image build, and secure production deployment with flexible DB architecture.
Feb 17, 20266 min read96
Migrating from Amazon Linux 2 to Amazon Linux 2023
A Practical Production Playbook (200 Instance Scenario) Amazon Linux 2 (AL2) will reach end-of-support on June 30, 2026. After that date, AWS will no longer provide security updates, patches, or new packages. Although AL2 continues to receive mainten...
Feb 26, 20265 min read416
Migrating Redis OSS Across AWS Accounts — Real Issues Faced and the Production-Safe Solution
A practical, real-world walkthrough of Redis OSS snapshot export, cross-account restore failures, and the production-safe migration pattern.
Mar 4, 20265 min read24
Production-Grade GCS to S3 Migration: Secure, Private, and Zero-Egress Architecture
Migrating object storage across cloud providers is not a copy task.It is a cost, network, and security boundary problem. We migrated 10+ TB of object data from Google Cloud Storage to Amazon S3 under
Mar 10, 20265 min read36
Cross-Cloud VM Migration: GCP → AWS Using AWS Application Migration Service (MGN)
Cross-cloud VM migration is not a disk copy task. It is: An access model transformation A replication lifecycle management exercise A downtime control operation A cost boundary decision We execu
Mar 17, 20266 min read226
Cost Optimization with Planned Downtime Migrating an EBS-Backed StatefulSet from Multi-AZ to Single-AZ in Amazon EKS (Production Pattern)
This migration was performed on a production workload where cost reduction was prioritized over zone-level high availability.
Mar 31, 20268 min read58

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