DevOps Blog Archive

Native Kubernetes rolling updates scale pods but give you no control over blast radius or automatic rollback. A practical Argo Rollouts guide to canary and blue-green strategies, traffic shaping, and metric-driven analysis for safe progressive delivery.

Most cloud migrations fail because every workload gets forced through the same path. The 6Rs — rehost, replatform, repurchase, refactor, retire, and retain — give you a per-workload vocabulary for choosing the cheapest strategy that still meets your goals.

Kubernetes upgrades are a leading cause of self-inflicted incidents: deprecated APIs break workloads, node evictions drop in-flight requests, and version skew causes silent failures. This guide covers zero-downtime node pool strategies, disruption budgets, and rollback planning.

Over-provisioning burns cloud budget. Under-provisioning causes production incidents. Kubernetes has multiple built-in and add-on autoscaling mechanisms, and picking the right combination for your workload is the difference between a stable, cost-efficient cluster and a constant firefight. This guide covers HPA, VPA, KEDA, and the cluster autoscaler with practical examples.

PodSecurityPolicy was removed in Kubernetes 1.25, but many teams still run without a replacement. Pod Security Admission is built into the API server and requires no extra controllers. Here is a practical step-by-step migration plan covering audit, warn, and enforce modes, plus how to handle privileged workloads.