Back to Kubernetes
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Phase 3
Networking & Traffic Management
How pods find each other and how external traffic gets in — including the part of the ecosystem that changed most recently.
1
Services, Endpoints and Cluster DNS
Pod IPs are disposable, so Services give a stable address. The four types, and why an empty endpoint list silently blackholes traffic.
kubernetesservicesclusterip
2
External Traffic: Gateway API and Where Ingress Stands
The Ingress API is frozen but alive; the ingress-nginx controller is archived and unpatched. Untangling the two, and learning Gateway API.
kubernetesgateway-apiingress
3
NetworkPolicies and Pod-to-Pod Isolation
Every pod can reach every other by default. The additive allow-only model, a default-deny baseline, and the CNI gotcha that makes policies inert.
kubernetesnetworkpolicydefault-deny