Traefik Ingress not getting loadbalancer IP

Traefik Traefik v2
1

Hello,

I don't get the IP address of the loadbalancer in the traefik ingress description, but it works with nginx:
Nginx and Traefik are deployed with helmet without any modifications. The new Cilium LB IPAM is used to allocate the loadbalancer IP

Traefik version: Traefik Proxy v2.9.6
Nginx: ingress-nginx/controller:v1.5.1

Deploy example:

kind: Deployment
apiVersion: apps/v1
metadata:
  name: whoami
  labels:
    app: whoami
spec:
  replicas: 1
  selector:
    matchLabels:
      app: whoami
  template:
    metadata:
      labels:
        app: whoami
    spec:
      containers:
        - name: whoami
          image: traefik/whoami
          ports:
            - name: web
              containerPort: 80
---
apiVersion: v1
kind: Service
metadata:
  name: whoami
spec:
  ports:
    - name: web
      port: 80
      targetPort: web
  selector:
    app: whoami
---
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  annotations:
    kubernetes.io/ingress.class: nginx
  name: whoami-ingress-nginx
spec:
  rules:
  - http:
      paths:
      - path: /nginx
        pathType: Prefix
        backend:
          service:
            name: whoami
            port:
              name: web
---
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  annotations:
    kubernetes.io/ingress.class: traefik
  name: whoami-ingress-traefik
spec:
  rules:
  - http:
      paths:
      - path: /traefik
        pathType: Prefix
        backend:
          service:
            name: whoami
            port:
              name: web

Result:

NAMESPACE                        NAME                                          TYPE           CLUSTER-IP       EXTERNAL-IP     PORT(S)                      AGE
ingress-nginx                    ingress-nginx-controller                      LoadBalancer   10.255.125.155   10.255.122.35   80:30803/TCP,443:32182/TCP   13h
traefik                          traefik                                       LoadBalancer   10.255.125.248   10.255.122.38   80:31240/TCP,443:30864/TCP   25m

kubectl get ingresses

NAME                     CLASS    HOSTS   ADDRESS         PORTS   AGE
whoami-ingress-nginx     <none>   *       10.255.122.35   80      5m32s
whoami-ingress-traefik   <none>   *                       80      5m32s

kubectl describe ingress whoami-ingress-nginx

Name:             whoami-ingress-nginx
Labels:           <none>
Namespace:        default
Address:          10.255.122.35
Ingress Class:    <none>
Default backend:  <default>
Rules:
  Host        Path  Backends
  ----        ----  --------
  *
              /nginx   whoami:web (10.255.130.241:80)
Annotations:  kubernetes.io/ingress.class: nginx
Events:
  Type    Reason  Age                 From                      Message
  ----    ------  ----                ----                      -------
  Normal  Sync    31s (x26 over 12m)  nginx-ingress-controller  Scheduled for sync
  Normal  Sync    31s (x26 over 12m)  nginx-ingress-controller  Scheduled for sync

kubectl describe ingress whoami-ingress-traefik

Name:             whoami-ingress-traefik
Labels:           <none>
Namespace:        default
Address:
Ingress Class:    <none>
Default backend:  <default>
Rules:
  Host        Path  Backends
  ----        ----  --------
  *
              /traefik   whoami:web (10.255.130.241:80)
Annotations:  kubernetes.io/ingress.class: traefik
Events:       <none>
2

Problem isn't related just to cilium LB IPAM on-prem but even on Civo cloud with flannel

3

Fix for Helm:

additionalArguments:
  - "--providers.kubernetesingress.ingressendpoint.publishedservice=NAMESPACE/TRAEFIK_SVC_NAME"
1 Like
4

Thanks for sharing! This worked perfectly for me. My ingresses were never receiving an IP address, making ArgoCD apps constantly hang in a "Processing" state. All ingresses received Traefik's LoadBalancer IP immediately after the new pod came up.

Link to the docs for anyone interested