Ingress跨域配置

对于网站访问跨域问题比较常见，在使用Kubernetes时，配置Ingress规则也会遇到同样的问题。以下配置解决Kubernetes集群站点的跨域问题：

    nginx.ingress.kubernetes.io/Access-Control-Allow-Origin: '*'
    nginx.ingress.kubernetes.io/cors-allow-headers: "DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Authorization,token"
    nginx.ingress.kubernetes.io/cors-allow-methods: 'PUT, GET, POST, OPTIONS'
    nginx.ingress.kubernetes.io/cors-allow-origin: '*'
    nginx.ingress.kubernetes.io/service-weight: ''

以下完整的Ingress 配置：

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  annotations:
    kubernetes.io/ingress.class: kubernetes-controller
    nginx.ingress.kubernetes.io/proxy-body-size: "50m"
    nginx.ingress.kubernetes.io/Access-Control-Allow-Origin: '*'
    nginx.ingress.kubernetes.io/cors-allow-headers: "DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Authorization,token"
    nginx.ingress.kubernetes.io/cors-allow-methods: 'PUT, GET, POST, OPTIONS'
    nginx.ingress.kubernetes.io/cors-allow-origin: '*'
    nginx.ingress.kubernetes.io/service-weight: ''

  name: dam-test.sllme.com
spec:
  rules:
  - host: dam-test.sllme.com
    http:
      paths:
      - path: /test-api
        pathType: Prefix
        backend:
          service:
            name: dam-test
            port:
             number: 8080
  tls:
  - hosts:
    - dam-test.sllme.com
    secretName: dam-test.sllme.com
status:
  loadBalancer: {}