08/05/2026
6 layers. One request. 🚀
Every time app.example.com loads, your request travels through six distinct layers of Kubernetes networking — and most engineers can't name all of them under interview pressure.
This is the full path: Browser → DNS → Load Balancer → Gateway → Service → Pod.
A few things worth knowing in 2026:
🔸Gateway API is the new default - GA since Oct 2023, now at v1.5 (Feb 2026). If you're building new clusters, skip Ingress. Built-in traffic splitting, header matching, gRPC, TCP, TLS - no annotation soup.
🔸Ingress-NGINX retires March 2026 - No more bug fixes, no more CVE patches. The ingress2gateway CLI exists for exactly this migration. Don't wait.
🔸Service ≠ a server - It's a virtual IP. kube-proxy (or Cilium's eBPF) rewrites traffic destined for the ClusterIP into real pod IPs using the EndpointSlice. No hop, just a rule.
🔸CNI vs Service Mesh - CNI (Cilium, Calico, Flannel) makes pod networking exist at L3/L4. Service mesh makes it smart at L7 — mTLS, retries, observability. One is required, the other is optional.
🔸NetworkPolicy defaults to allow-all - Until you write your first policy, every pod can reach every other pod. Most production breaches start here.
Save it. Bookmark it. Share it.
But here's the truth: You won't actually understand Kubernetes networking by looking at diagrams. You learn it by deploying a Gateway, watching a pod fail readiness, and tracing why traffic isn't reaching your Service. That's exactly what our Kubernetes Networking Deep Dive course gives you:
✔️Hands-on labs - Gateway API, Services, Ingress migration
✔️ Real cluster troubleshooting - Not slides
✔️ CNI internals (Cilium, Calico) and NetworkPolicy walkthroughs
✔️ Browser-based - No setup, no cluster bills
Stop memorizing. Start debugging.
👉 Start the K8s Networking Deep Dive free: https://kode.wiki/48KkTsj
