Kubernetes Ingress - 服务路由的入口不起作用

Question

我有一个像下面这样的入口。

kubectl get ing test-ingress -o yaml

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  annotations:
    kubectl.kubernetes.io/last-applied-configuration: |
      {"apiVersion":"extensions/v1beta1","kind":"Ingress","metadata":{"annotations":{"kubernetes.io/ingress.class":"tectonic"},"name":"test-ingress","namespace":"nstest"},"spec":{"rules":[{"host":"test.nstest.k8s.privatecloud.com","http":{"paths":[{"backend":{"serviceName":"test","servicePort":8080},"path":"/"}]}}]}}
    kubernetes.io/ingress.class: tectonic
  creationTimestamp: 2018-03-27T17:57:02Z
  generation: 1
  name: test-ingress
  namespace: "nstest"
  resourceVersion: "19985087"
  selfLink: /apis/extensions/v1beta1/namespaces/nstest/ingresses/test-ingress
  uid: 4100bd04-31e8-11e8-8f7b-5cb9018ebebc
spec:
  rules:
  - host: test.nstest.k8s.privatecloud.com
    http:
      paths:
      - backend:
          serviceName: test
          servicePort: 8080
        path: /
status:
  loadBalancer: {}

我的服务如下，

kubectl get svc test -o yaml

apiVersion: v1
kind: Service
metadata:
  annotations:
    kubectl.kubernetes.io/last-applied-configuration: |
      {"apiVersion":"v1","kind":"Service","metadata":{"annotations":{},"labels":{"app":"test"},"name":"test","namespace":"nstest"},"spec":{"ports":[{"port":8080,"protocol":"TCP","targetPort":8080}],"selector":{"app":"test"}}}
  creationTimestamp: 2018-03-27T17:57:02Z
  labels:
    app: test
  name: test
  namespace: "nstest"
  resourceVersion: "19985067"
  selfLink: /api/v1/namespaces/nstest/services/test
  uid: 40f975f3-31e8-11e8-8f7b-5cb9018ebebc
spec:
  clusterIP: 172.158.50.20
  ports:
  - port: 8080
    protocol: TCP
    targetPort: 8080
  selector:
    app: test
  sessionAffinity: None
  type: ClusterIP
status:
  loadBalancer: {}

pod 运行良好。这有什么问题？为什么从入口到服务的路由不起作用。

访问入口端点时出错，

Ingress Error
No healthy backends could be found.
Check pod liveness probes for more details.

谢谢，

Answer 1

你应该在你的服务规范中给端口一个“名称”，并在你的 Ingress 中引用它:

---
apiVersion: v1
kind: Service
metadata:
  name: myApp
spec:
  selector:
    app: myApp
  ports:
  - name: http
    port: 80
    targetPort: 80

---
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: myApp
spec:
  rules:
  - host: myapp.domain.com
    http:
      paths:
      - path: /
        backend:
          serviceName: myApp
          servicePort: http