Kubernetes 入口路径

Question

我使用下面的 yaml 文件为前端和后端设置了 nginx-ingress。

apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
  name: polls-ingress
  annotations:
    kubernetes.io/ingress.class: "nginx"
    nginx.ingress.kubernetes.io/rewrite-target: /$1
    nginx.ingress.kubernetes.io/service-upstream: "true"
    cert-manager.io/cluster-issuer: "letsencrypt-prod"
spec:
  tls:
  - hosts:
    - example.com
    secretName: polls-tls
  rules:
  - host: example.com
    http:
      paths:
      - path: /(.*)
        backend:
          serviceName: frontend
          servicePort: 3000
      - path: /graphql/(.*)
        backend:
          serviceName: polls
          servicePort: 8000

目前，我的重写目标重新路由如下

example.com  => / of frontend app
example.com/ => / of frontend app
example.com/graphql => / of frontend app
example.com/graphql/post => / of frontend app

example.com/graphql/ => / of backend app
example.com/graphql/post/ => /post of backend app

但我希望后端应用同时用于 graphql/post 和 graphql/post/，如下所示。

example.com => / of frontend app
example.com/ => / of frontend app
example.com/hello => /hello of frontend app
example.com/test => /test of frontend app

example.com/graphql => / of backend app
example.com/graphql/ => / of backend app
example.com/grpahql/post => /post of backend app
example.com/graphql/post/ => /post of backend app

谁能告诉我如何实现它？

Answer 1

您需要更改 graphql 路径的正则表达式，如下所示：

apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
  name: polls-ingress
  annotations:
    kubernetes.io/ingress.class: "nginx"
    nginx.ingress.kubernetes.io/rewrite-target: /$1
    nginx.ingress.kubernetes.io/service-upstream: "true"
    cert-manager.io/cluster-issuer: "letsencrypt-prod"
spec:
  tls:
  - hosts:
    - example.com
    secretName: polls-tls
  rules:
  - host: example.com
    http:
      paths:
      - path: /(.*)
        backend:
          serviceName: frontend
          servicePort: 3000
      - path: /graphql/?(.*)   # <- HERE add "?"
        backend:
          serviceName: polls
          servicePort: 8000

---

来自正则表达式的文档：

问号表示前面的元素出现零次或一次。例如，colou?r 同时匹配“color”和“color”。