Blog
A focused list of articles for this topic.
12 min read · switch production traffic atomically with instant rollback
Rolling updates mix old and new versions under live traffic. Blue-green keeps two full stacks, validates the idle color through a preview Service, then switches the production selector in one step—with instant rollback by patching back.
14 min read · replace VMs by rebaking images instead of patching in place
SSH patches and config drift make mutable VMs unreliable. Bake application and OS state into images with Packer, provision with Terraform, and replace instances through Auto Scaling rolling refresh—without treating servers as pets.
14 min read · unify secrets across clouds without sprawl or stale credentials
When AWS, GCP, Azure, and on-prem Vault all hold credentials, sprawl and stale rotations multiply blast radius. A central secrets plane with External Secrets Operator and short-lived dynamic credentials keeps access auditable and contained.
14 min read · enforce compliance rules on every Kubernetes API request
Wiki pages do not block a deployment. Policy as Code turns security and compliance rules into version-controlled admission checks that run on every create and update—before workloads reach production.
13 min read · keep live infrastructure aligned with Terraform desired state
Manual console edits and stale state silently diverge from Terraform code. This guide runs scheduled drift scans, classifies low-risk changes for auto-remediation, and adds backend locking, lifecycle rules, and policy guardrails.
11 min read · ship faster PR feedback without shared staging contention
Shared staging clusters turn into queues and config drift. This guide shows how to provision one namespace per pull request with Helm and GitHub Actions, enforce quotas, route preview traffic, and delete resources when the PR closes.
14 min read · automate database schema changes through CI/CD and GitOps
When app deploys and schema changes run on different tracks, production breaks fast. This guide turns migrations into first-class delivery artifacts with Flyway or Liquibase, forward-safe expand-contract rollouts, and GitOps-aware execution order.
10 min read · reduce multi-cloud spend with measurable engineering guardrails
Surprise cloud bills usually trace to visibility gaps, idle capacity, and data movement—not a single misconfigured instance. This playbook maps cost levers across AWS, GCP, and Azure, with tagging, commitments, guardrails, and a weekly review loop teams can run without freezing delivery.
14 min read · Kubernetes security hardening for production clusters
Default clusters are easy targets for RBAC sprawl, open APIs, and plaintext etcd. This guide walks through control plane flags, Pod Security Standards, default-deny networking, node sysctl hardening, and Vault-style secrets—with a phased rollout plan.
12 min read · GitOps delivery with Argo CD or Flux on Kubernetes
Git as the contract of record stops silent drift across clusters. Compare Argo CD and Flux patterns—from install snippets to policy hooks—and adopt guardrails for secrets, observability, and audit-ready rollouts.
11 min read · secrets, credentials, and certificates in DevOps CI/CD pipelines
CI/CD needs secrets, yet sprawl and logs multiply risk. This guide covers a centralized pattern, Vault with GitLab, Kubernetes CSI mounts, and guardrails for rotation, access, and audit.
9 min read · Infrastructure as Code testing with Terraform, Test Kitchen, and InSpec
Faulty IaC still causes outages and cost spikes. This article lays out a layered test strategy, a Kitchen-Terraform plus InSpec walkthrough for an AWS S3 module, and practices that keep infra tests honest in CI.
10 min read · resilience engineering and controlled failure testing in DevOps
Most outages are not caused by unknown bugs but by untested failure behavior. This guide explains how to run hypothesis-driven chaos experiments safely, measure impact, and turn findings into repeatable resilience improvements.
7 min read · delivery speed and CI/CD bottleneck diagnosis
A practical framework to identify delivery constraints and improve lead time without overhauling your stack.
