<p>I have a ingress like the below one.</p>

<blockquote>
  <p>kubectl get ing test-ingress -o yaml</p>
</blockquote>

<pre><code>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: {}
</code></pre>

<p>My service is as follows,</p>

<blockquote>
  <p>kubectl get svc test -o yaml</p>
</blockquote>

<pre><code>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: {}
</code></pre>

<p>The pods are running fine. What is wrong with this? Why the routing from ingress to service not working.</p>

<p>Error on accessing ingress endpoint,</p>

<blockquote>
<pre><code>Ingress Error
No healthy backends could be found.
Check pod liveness probes for more details.
</code></pre>
</blockquote>

<p>Thanks,</p>

<p>You should give the port in your Service spec a "name", and refer to that in your Ingress:</p>

<pre><code>---
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
</code></pre>
