Basic K8s Ingress example

Traefik Traefik v2
1

Hi,

I am evaluating Traefik as our pimrary ingress mechanism. I am using the following YAML

kind: Ingress
apiVersion: networking.k8s.io/v1beta1
metadata:
  name: myingress
  annotations:
    traefik.ingress.kubernetes.io/router.entrypoints: web

spec:
  rules:
    - host: localhost
      http:
        paths:
          - path: /bar
            backend:
              serviceName: whoami
              servicePort: 80
          - path: /foo
            backend:
              serviceName: whoami
              servicePort: 80
---
kind: Deployment
apiVersion: apps/v1
metadata:
  name: whoami
  labels:
    app: containous
    name: whoami

spec:
  replicas: 2
  selector:
    matchLabels:
      app: containous
      task: whoami
  template:
    metadata:
      labels:
        app: containous
        task: whoami
    spec:
      containers:
        - name: containouswhoami
          image: containous/whoami
          ports:
            - containerPort: 80
---
apiVersion: v1
kind: Service
metadata:
  name: whoami

spec:
  ports:
    - name: http
      port: 80
  selector:
    app: containous
    task: whoami

This doesn't work. I installed Traefik with Helm. Any help would be much appreciated.

Cheers

2

Can you please describe "what doesn't work"?

Also, logs would be nice :slight_smile:

3

Hi @mojo,

The HelmChart rely on the CRD provider by default.
From here you have two options to make your example work:

  • Activate the Kubernetes Ingress provider:

When installing the Traefik HelmChart, you must provide a values file as follow:

helm install --namespace traefik traefik traefik/traefik --values values.yaml

And here is the content of the values file:

# values.yaml
additionalArguments:
  - "--providers.kubernetesIngress"
  • Work with IngressRoute CRD:

Replace the Ingress by an IngressRoute resource:

---
apiVersion: traefik.containo.us/v1alpha1
kind: IngressRoute
metadata:
  name: myingressroute
spec:
  entryPoints:
    - web
  routes:
    - match: Host(`localhost`) && Path(`/foo`)
      kind: Rule
      services:
        - name: whoami
          port: 80
    - match: Host(`localhost`) && Path(`/bar`)
      kind: Rule
      services:
        - name: whoami
          port: 80
4

Thank you this is awesome!

5

Hi,
If you want traefik can auto discovery Ingress object instead IngressRoute. You have to tell to traefik enable the kubernetes ingress. See below how to do it.

traefik-deploy.yaml

...
            - --api=true
            - --api.insecure=true
            - --api.dashboard=true
            - --accesslog
            - --ping=true
            - --log.level=INFO
            # providers block
            - --providers.kubernetescrd
            - --providers.kubernetesingress=true
...

I'm using both objects IngressRoute and Ingress to route traffic to my services.

Cheers