[nginx] UDP load balancing don't work

[r0bj]

I've migrated nginx-ingress-controller from 0.8.3 to 0.9.0-beta.1 with my UDP load balancing setup:
https://gist.github.com/r0bj/690e0ccdec46a070b2b54e1925c754c9

There are pods under service logs-ingress:

# kubectl describe svc logs-ingress -n logs-ingress
Name:			logs-ingress
Namespace:		logs-ingress
Labels:			name=logs-ingress
Selector:		tier=logs-ingress
Type:			ClusterIP
IP:			10.222.74.126
Port:			<unset>	514/UDP
Endpoints:		10.202.116.138:1514,10.202.116.140:1514,10.202.145.10:1514 + 9 more...
Session Affinity:	None
No events.

But there is no UDP backend configuration in nginx-ingress-controller:
https://gist.github.com/r0bj/5becfa94b8a1c60df6ee551af1f0f9a5

The same setup work fine with nginx-ingress-controller 0.8.3.

Do I need to configure this new version differently?

[aledbf]

@r0bj please check the gist

I0201 14:06:29.288831       7 controller.go:447] no configured tcp services found: configmap udp-lb-config was not found

Please check the configmap udp-lb-config exists

(I will open a PR to change the "no configured tcp services found" to "no configured udp services found")

[r0bj]

Yeah but the configmap udp-lb-config actually exists:

# kubectl get configmap udp-lb-config -o yaml -n kube-system
apiVersion: v1
data:
  "514": logs-ingress/logs-ingress:514
kind: ConfigMap
metadata:
  annotations:
    kubectl.kubernetes.io/last-applied-configuration: '{"kind":"ConfigMap","apiVersion":"v1","metadata":{"name":"udp-lb-config","namespace":"kube-system","creationTimestamp":null},"data":{"514":"logs-ingress/logs-ingress:514"}}'
  creationTimestamp: 2017-01-09T14:59:14Z
  name: udp-lb-config
  namespace: kube-system
  resourceVersion: "10007842"
  selfLink: /api/v1/namespaces/kube-system/configmaps/udp-lb-config
  uid: 2fe01cfe-d67c-11e6-b94b-5254009bbb79

[aledbf]

@r0bj please use 0.9.0-beta.3

[aledbf]

Please reopen if you still have issues

[r0bj]

@aledbf thanks for info.

There is another issue with UDP loadbalancing (0.9.0-beta.3), UDP port is bind as TCP.
Example config:

apiVersion: v1
data:
  "5353": kube-system/kube-dns:53
kind: ConfigMap

Created config:

    server {
        listen                  5353;
        proxy_responses         1;
        proxy_pass              kube-system-kube-dns-53;
    }

Proper config should be:

    server {
        listen                  5353 udp;
        proxy_responses         1;
        proxy_pass              kube-system-kube-dns-53;
    }

[aledbf]

@r0bj this issue is fixed in master #450