In-depth guides on Docker, Kubernetes, AWS, CI/CD, AI/ML, and modern infrastructure — written by engineers, for engineers.
Showing 19–27 of 371 articles
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IAM is how AWS decides who can do what. Here's a plain-English explanation of users, groups, roles, and policies — with real examples of how they're used together.
ArgoCD Image Updater detects a new image tag but doesn't update the Application. Here's how to diagnose and fix annotation errors, registry auth issues, write-back problems, and sync failures.
AWS Cost Anomaly Detection catches spikes but gives no context. Build a system that detects anomalies, uses Claude to explain what caused them, and posts actionable Slack alerts with a fix recommendation.
Three tools for managing Kubernetes clusters, but they're solving very different problems. Rancher manages multiple clusters, OpenShift is an enterprise K8s platform, Lens is a desktop UI. Full comparison.
After hundreds of DevOps interviews, here's what hiring managers actually care about — and why most candidates fail even when they know the tools.
Rolling update keeps your app running during deploys. Recreate kills everything then starts fresh. Here's when to use each, plus Blue-Green and Canary explained simply.
Stop hand-writing Kubernetes manifests from scratch. Build a tool that takes natural language descriptions and generates production-ready K8s YAML — Deployments, Services, HPA, NetworkPolicies, and more.
Datadog dashboards show no data, hosts appear offline, or custom metrics aren't showing up. Here's how to systematically diagnose and fix Datadog agent issues on Kubernetes and VMs.
Three tools for running Kubernetes on your laptop. They're not all equal — kind is fastest for CI, k3d is lightest for dev, minikube has the best feature set. Here's the full comparison.