Expose Services

目录

• Overview
• Comparison
• Ingress

Overview

Kubernetes NodePort, LoadBalancer, and Ingress. They are all different ways to route traffic from the internet to your services inside the Kubernetes cluster.

Comparison

NodePort	each service needs to be assigned a IP Hard to maintain default range 30000 - 32767
LoadBalancer	each service needs to be assigned a IP Hard to maintain
Ingress	multiple services share the same ingress

Ingress

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: ingress
  annotations:
    nginx.ingress.kubernetes.io/rewrite-target: /
spec:
  rules:
    - host: my.home.com
      http:
        paths:
          - path: /api/v1/user
            backend:
              serviceName: user-service
              servicePort: 80
          - path: /api/v1/order
            backend:
              serviceName: order-service
              servicePort: 80
    - host: my.work.org
      http:
        paths:
          - path: /api/v1/product
            backend:
              serviceName: product-service
              servicePort: 80