Issue with externalname

[whitakersp-fineos]

Hey. there, i'm trying to setup an ingress for an external url and I'm following the very light instructions here, https://github.com/nginxinc/kubernetes-ingress/tree/v2.2.2/examples/externalname-services.

Here's my setup.

kind: Service
apiVersion: v1
metadata:
  name: test-external-url
spec:
  type: ExternalName
  externalName: static.wikia.nocookie.net
---
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: external-ingress
spec:
  rules:
  - host: $(INGRESS_HOST)  
    http:
      paths:
      - path: /wikia
        pathType: Prefix
        backend:
          service:
            name: test-external-url
            port:
              number: 80

I added the resolver-address to my configmap and set that to the cluster-ip of kube-dns.

Problem is when I look at the /etc/nginx/conf.d/generetedfile.conf I see my location route and the upstream it created, but the up stream is missing any kind of server information for what i'm proxying, and i get a 502 error and the logs of course say no live upstreams found.

Here's what is generated

upstream eng-dev-sandbox-external-eip-eng-dev-sandbox.testsite-eng.com-test-external-url-80 {
        zone eng-dev-sandbox-external-eip-eng-dev-sandbox.testsite-eng.com-test-external-url-80 512k;
        random two least_conn;
}

Any idea what i'm doing wrong here?

[jasonwilliams14]

@whitakersp-fineos Hello there.
Are you using NGINX Open source Ingress or NGINX Plus Ingress?

[whitakersp-fineos]

Oh yeah that'd help wouldn't it? We're using plus.

[jasonwilliams14]

@whitakersp-fineos great.
is it possible to provide your deployment file (manifest, helm or operator) as well as your configmap settings?
can you also provide the output of:

kubectl get ing -A

[whitakersp-fineos]

Let me see if i can share that

[brianehlert]

I noticed that you mentioned you are setting KubeDNS as the resolver.
I am assuming that in your cluster KubeDNS is resolving the external hostnames.

I bring this up as it is common in public clouds that KubeDNS is integrated with external DNS resolution, but in other cases it is not.

[whitakersp-fineos]

Any idea how to check that?