ingress无法获取默认的http后端

Question

我配置的入口与控制器 ingress-nginx 一起运行。

apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
  name: app-ingress
  annotations:
    nginx.ingress.kubernetes.io/rewrite-target: /$2
spec:
  tls:
  - hosts:
    - XXX.XX.com
    secretName: app-tls
  rules:
  - host: XXX.XX.com
    http:
      paths:
      - path: /my-api(/|$)(.*)
        backend:
          serviceName: app
          servicePort: 80
---
apiVersion: v1
kind: Service
metadata:
  name: my-api
spec:
  selector:
    app: my-api
  ports:
  - name: app
    port: 3000
    targetPort: 3000

我可以在本地运行 api curl localIP:3000/testapi，但它不能远程运行。

# kubectl describe ingress app-ingress
Name:             app-ingress
Namespace:        default
Address:          XX.XX.XX.XX
Default backend:  default-http-backend:80 (<error: endpoints "default-http-backend" not found>)
TLS:
  app-tls terminates www.daichenchen.cn
Rules:
  Host                Path  Backends
  ----                ----  --------
  XXX.XX.com
                      /my-api(/|$)(.*)   app:80 (<error: endpoints "app" not found>)

我已经成功安装了 ingress-nginx 并且所有的 pod 都没有错误地工作。

Answer 1

您serviceName在Ingress规则中定义并且Service应该相同。

像这样 ：

...
  rules:
  - host: XXX.XX.com
    http:
      paths:
      - path: /my-api(/|$)(.*)
        backend:
          serviceName: app
          servicePort: 80

apiVersion: v1
kind: Service
metadata:
  name: app
spec:
  selector:
    app: my-api
  ports:
  - name: app
    port: 3000
    targetPort: 3000

如果Ingress和Service位于不同的命名空间，您还可以将服务名称添加到入口规则中。在这种情况下，您需要为 service 使用 dns 名称<service-name>.<namespace>。

例如：

  rules:
  - host: example.com
    http:
      paths:
      - path: /my-api
        backend:
          serviceName: test-service.test-namespace
          servicePort: 80

apiVersion: v1
kind: Service
metadata:
  name: test-service
  namespace: test-namespace