Networking Model

Kubernetes assigns each pod its own IP and expects flat, routable connectivity between pods across nodes.

Traffic Entry and Discovery

  • ClusterIP for internal services
  • NodePort and LoadBalancer for external access
  • Ingress for HTTP routing and TLS termination
  • CoreDNS for service discovery

Network Policy Example

apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: allow-api-only
spec:
podSelector: {}
ingress:
- from:
- podSelector:
matchLabels:
role: api

Level Up Kubernetes Networking

Design secure, observable traffic paths in production clusters.

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