Core2Cloud | AI Cloud Mentor

smart_toy

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person

Can you explain how a LoadBalancer service differs from NodePort in a production AWS EKS environment? Use a code example if possible.

smart_toy

Excellent question. In a production AWS EKS environment, the distinction is critical for security and scalability.

apiVersion: v1
kind: Service
metadata:
  name: my-eks-service
  annotations:
    service.beta.kubernetes.io/aws-load-balancer-type: nlb
spec:
  selector:
    app: MyApp
  ports:
    - protocol: TCP
      port: 80
      targetPort: 9376
  type: LoadBalancer

NodePort

Exposes the service on each Node's IP at a static port. Not recommended for direct production traffic.

LoadBalancer

Provisioning an external AWS NLB/ALB. Automatically routes traffic to your pods across all nodes.