kubernetes: Undefined backend 'X/' for frontend X/"

[abh]

What version of Traefik are you using (traefik version)?

1.1.2

What is your environment & configuration (arguments, toml...)?

--web --kubernetes --kubernetes.namespaces=perlweb,xyz

What did you do?

traffic is running in the ingress namespace, the following ingress definition is setup in the perlweb namespace.

apiVersion: v1
items:
- apiVersion: extensions/v1beta1
  kind: Ingress
  metadata:
    creationTimestamp: 2017-01-09T09:52:31Z
    generation: 1
    name: perlweb-ingress
    namespace: perlweb
    resourceVersion: "414600"
    selfLink: /apis/extensions/v1beta1/namespaces/perlweb/ingresses/perlweb-ingress
    uid: 56c378f0-d651-11e6-86f0-525400f93bbc
  spec:
    rules:
    - host: www.perl.org
      http:
        paths:
        - backend:
            serviceName: web
            servicePort: 8235
          path: /
    - host: noc.perl.org
      http:
        paths:
        - backend:
            serviceName: web
            servicePort: 8235
          path: /
  status:
    loadBalancer: {}
kind: List
metadata: {}
resourceVersion: ""
selfLink: ""

What did you expect to see?

Working routes.

What did you see instead?

time="2017-01-09T09:52:31Z" level=debug msg="Received event from kubernetes map[type:ADDED object:map[kind:Ingress apiVersion:extensions/v1beta1 metadata:map[generation:1 creationTimestamp:2017-01-09T09:52:31Z name:perlweb-ingress namespace:perlweb selfLink:/apis/extensions/v1beta1/namespaces/perlweb/ingresses/perlweb-ingress uid:56c378f0-d651-11e6-86f0-525400f93bbc resourceVersion:414600] spec:map[rules:[map[host:www.perl.org http:map[paths:[map[backend:map[serviceName:web servicePort:8235] path:/]]]] map[host:noc.perl.org http:map[paths:[map[path:/ backend:map[serviceName:web servicePort:8235]]]]]]] status:map[loadBalancer:map[]]]]"
time="2017-01-09T09:52:31Z" level=debug msg="Configuration received from provider kubernetes: {\"frontends\":{\"noc.perl.org/\":{\"entryPoints\":[\"http\"],\"backend\":\"noc.perl.org/\",\"routes\":{\"/\":{\"rule\":\"PathPrefix:/\"},\"noc.perl.org\":{\"rule\":\"Host:noc.perl.org\"}},\"passHostHeader\":true,\"priority\":1},\"www.perl.org/\":{\"entryPoints\":[\"http\"],\"backend\":\"www.perl.org/\",\"routes\":{\"/\":{\"rule\":\"PathPrefix:/\"},\"www.perl.org\":{\"rule\":\"Host:www.perl.org\"}},\"passHostHeader\":true,\"priority\":1}}}"
time="2017-01-09T09:52:31Z" level=debug msg="Creating frontend noc.perl.org/"
time="2017-01-09T09:52:31Z" level=debug msg="Wiring frontend noc.perl.org/ to entryPoint http"
time="2017-01-09T09:52:31Z" level=debug msg="Creating route noc.perl.org Host:noc.perl.org"
time="2017-01-09T09:52:31Z" level=debug msg="Creating backend noc.perl.org/"
time="2017-01-09T09:52:31Z" level=error msg="Undefined backend 'noc.perl.org/' for frontend noc.perl.org/"
time="2017-01-09T09:52:31Z" level=error msg="Skipping frontend noc.perl.org/..."

A request with Host: noc.perl.org just gets a 404 page.

If I add another Ingress that doesn't match on Host then that works correctly (but I still get a 404 when requesting Host: noc.perl.org).

[abh]

Aha - my mistake was that the port number in my ingress didn't match the service one. The error message could have been better, maybe?

Thank you for træfik. Closing the issue.