K8s 服务暴露

Service类型说明

类型	说明	使用场景
ClusterIP	集群内部访问	微服务间通信
NodePort	通过节点端口暴露	开发测试
LoadBalancer	云厂商负载均衡	生产环境
ExternalName	映射外部域名	访问外部服务

Service配置示例

apiVersion: v1
kind: Service
metadata:
  name: nginx-service
spec:
  selector:
    app: nginx
  ports:
    - protocol: TCP
      port: 80
      targetPort: 80
  type: ClusterIP

---
apiVersion: v1
kind: Service
metadata:
  name: nginx-nodeport
spec:
  selector:
    app: nginx
  ports:
    - protocol: TCP
      port: 80
      targetPort: 80
      nodePort: 30080
  type: NodePort

Ingress配置示例

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: example-ingress
  annotations:
    nginx.ingress.kubernetes.io/rewrite-target: /
spec:
  rules:
  - host: app.example.com
    http:
      paths:
      - path: /
        pathType: Prefix
        backend:
          service:
            name: app-service
            port:
              number: 80
  - host: api.example.com
    http:
      paths:
      - path: /
        pathType: Prefix
        backend:
          service:
            name: api-service
            port:
              number: 8080
  tls:
  - hosts:
    - app.example.com
    - api.example.com
    secretName: tls-secret