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Every platform team eventually asks: should we build an Internal Developer Platform? The answer is probably yes. The question is how. I’ve seen platforms that cost millions and never got adopted. I’ve also seen scrappy internal tools that transformed developer productivity overnight. The difference isn’t budget or technology — it’s approach. What Is an Internal Developer Platform? An Internal Developer Platform (IDP) is a self-service layer that abstracts infrastructure complexity from developers. Instead of writing Kubernetes YAML, developers describe what they need. The platform handles how. ...

Your cluster looks healthy. Pods are running. Metrics are green. Everything works. Until a node fails during peak traffic. Or the database connection pool exhausts. Or that one service nobody remembers deploying starts consuming all available memory. You can wait for these things to happen in production at 3 AM. Or you can break things intentionally, on your terms, and fix the weaknesses before they become outages. This is chaos engineering. ...

Every Kubernetes cluster eventually needs persistent storage. The question is: which solution? For self-hosted clusters without cloud provider storage classes, two options dominate: Longhorn and Rook-Ceph. Both are CNCF projects. Both provide replicated block storage. Both work well. But they’re very different in philosophy, complexity, and use cases. I’ve run both in production. Let me share what I’ve learned. The Fundamental Difference Longhorn: Simple distributed block storage built for Kubernetes. Each volume is replicated across nodes using standard Linux storage primitives. ...

Your phone buzzes at 3 AM. You groggily check: “High CPU usage on node-worker-3.” You look at the graph, see it’s been at 75% for 10 minutes, and go back to sleep. Tomorrow, same alert. Next week, you stop checking altogether. This is alert fatigue, and it’s dangerous. When everything alerts, nothing does. Real incidents get lost in the noise. I’ve been on both sides — drowning in alerts, and running systems where pages are rare and always actionable. The difference isn’t better tools. It’s better thinking about what deserves attention. ...

Kubernetes networking is notoriously complex. CNI plugins, kube-proxy, iptables chains, service meshes — layers upon layers of abstraction that eventually break in ways nobody understands. Cilium changes this. It uses eBPF to move networking logic into the Linux kernel, bypassing iptables entirely. The result: better performance, more visibility, and network policies that actually make sense. This is what I run in my clusters. Let me show you why. What is eBPF? eBPF (extended Berkeley Packet Filter) lets you run sandboxed programs in the Linux kernel without changing kernel source code or loading kernel modules. ...