Kubernetes Ingress non-root path 404 Not Found

Question

I have the following that config that works when I try <NodeIP>:30080

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: app-deployment
spec:
  replicas: 3
  template:
    metadata:
      labels:
        name: app-node
    spec:
      containers:
        - name: app
          image: myregistry.net/repo/app:latest
          imagePullPolicy: Always
          ports:
            - containerPort: 8080
          env:
            - name: NODE_ENV
              value: production
---
apiVersion: v1
kind: Service
metadata:
  name: app-service
spec:
  selector:
    name: app-node
  ports:
    - protocol: TCP
      port: 80
      targetPort: 8080
      nodePort: 30080
  type: NodePort

I am trying to use an Ingress:

 apiVersion: extensions/v1beta1
 kind: Ingress
 metadata:
   name: nginx-ingress
 spec:
   rules:
   - host: myhost.com
     http:
       paths:
       - path: /app
         backend:
           serviceName: app-service
           servicePort: 80

myhost.com works with the nginx intro screen, but myhost.com/app gives 404 Not Found. Where is the issue in my setup?

---

UPDATE:

   - path: /
     backend:
       serviceName: app-service
       servicePort: 80

If I do root path it works, but how come /app doesn't?

Answer 1

Your ingress definition creates rules that proxy traffic from the {path} to the {backend.serviceName}{path}. In your case, I believe the reason it's not working is that /app is proxied to app-service:80/app but you're intending on serving traffic at the / root. Try adding this annotation to your ingress resource: nginx.ingress.kubernetes.io/rewrite-target: /

Source: https://github.com/kubernetes/ingress-nginx/tree/master/docs/examples/rewrite