k8s ingress转发策略配置-Go服务器开发

Kubernetes Ingress资源可以使用不同的策略来实现请求转发。这里列出一些常见的Ingress转发策略：

Path-Based Routing：根据请求URL路径进行路由，可使用nginx ingress或traefik ingress实现

apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
  name: example-ingress
spec:
  rules:
  - host: example.com
    http:
      paths:
      - path: /v1
        backend:
          serviceName: service-v1
          servicePort: 80
      - path: /v2
        backend:
          serviceName: service-v2
          servicePort: 80

Host-Based Routing：根据请求的主机名（host）进行路由，可使用nginx ingress或traefik ingress实现

apiVersion: networking.k8s.io/v1beta1 
kind: Ingress 
metadata:
  name: my-ingress 
spec:
  rules:
    - host: foo.bar.com 
      http:
        paths:
        - path: /path/to/service 
          backend:
            serviceName: my-service 
            servicePort : my-service-port

TCP/UDP routing：将TCP/UDP流量路由到特定服务的端口，通过MetalLB等负载均衡器实现

apiVersion : v1 
kind : Service 
metadata :
   name : mysql-svc 
   labels :
     app : mysql-db   
spec :
   ports :
     - port : 3306    
       targetPort : mysql    
   selector :
     app : mysql-db  

---

apiVersion : networking.k8s.io/v1beta1 
kind : Ingress 
metadata :
   name : mysql-ingress 
spec :
   rules:
    - host: mysql.example.com
      http:
        paths:
        - path: /
          backend:
            serviceName: mysql-svc
            servicePort: 3306

Fanout：将请求路由到多个服务，可使用traefik ingress实现

apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
  name: fanout-ingress
spec:
  rules:
    - host: example.com
      http:
        paths:
          - path: /serviceA/*
            backend:
              serviceName: service-a
              servicePort: 80
          - path: /serviceB/*
            backend:
              serviceName: service-b
              servicePort: 80

需要根据实际需求选择合适的Ingress转发策略。