10/1/2025
EKS In‑Place Upgrades with Zero Downtime: A Senior Engineer’s Playbook
kuberneteseksdevops
5 min readTechnical deep-dives with real POCs and measurable outcomes.
A slow CI/CD pipeline is a tax on every developer. See the multi-layered caching strategy we used with Docker BuildKit and sccache to cut our monorepo build times by 62%, saving 28 engineer-hours every week.
A single missing CPU limit can crash a node. A ':latest' image tag can break production. Learn how we use Kyverno's Policy-as-Code to build a safety net that catches misconfigurations before they cause havoc.
Our data lake costs were spiraling, but most of the data was rarely touched. Learn how we used S3 Lifecycle Policies to automatically move cold data to cheaper storage tiers like Glacier, cutting our bill by 40% with zero code changes.
Managing dozens of microservices across multiple environments is a recipe for configuration drift. Learn how we use Argo CD's 'App of Apps' pattern and Kustomize to create a single source of truth for our entire cluster.
Stop waiting for a free staging environment. Learn how we built a fully automated system to spin up a complete, isolated preview environment for every pull request—and destroy it automatically.
Stop jumping between dashboards. Discover how we cut our Mean Time to Resolution (MTTR) by 35% by correlating logs, metrics, and traces into a single, unified view using OpenTelemetry and Grafana.
How do you know the container image running in production is the exact one your CI pipeline built? Learn how we implemented a modern, verifiable supply chain using SBOMs for transparency, Cosign for signing, and Kyverno for enforcement.
Tired of flaky tests and cryptic pipeline failures? Learn how we cut manual triage by 20% and accelerated recovery times by integrating an LLM-powered assistant directly into our ChatOps workflow.
A single RabbitMQ queue is a single point of contention. When our throughput flatlined and p99 latencies soared, we scaled out by sharding our queues and using Quorum Queues for HA, achieving 2x performance.
A comprehensive, step-by-step tutorial on mastering Blue-Green and Canary deployments on EKS using Argo Rollouts. This deep dive covers everything from traffic management and automated analysis to hands-on CLI commands, complete with detailed diagrams and production-grade YAML examples.