EKS Networking

Comprehensive guide for configuring Amazon EKS networking including VPC CNI plugin, load balancers, network policies, and security.

Overview

EKS networking involves several key components working together:

1. VPC CNI Plugin - Assigns real VPC IP addresses to pods
2. Load Balancers - ALB for Layer 7, NLB for Layer 4 traffic
3. Network Policies - Control pod-to-pod and pod-to-external traffic
4. Security Groups for Pods - AWS-level network security
5. DNS - CoreDNS for in-cluster, ExternalDNS for external records
6. Service Discovery - AWS Cloud Map for multi-cluster

Quick Start

1. Enable VPC CNI with Prefix Mode