How to remove nodePort Kubernetes - Traefik ingress controller

Following this tutorial:

https://medium.com/kubernetes-tutorials/deploying-traefik-as-ingress-controller-for-your-kubernetes-cluster-b03a0672ae0c

I am able to access the site by visiting www.domain.com:nodePort

Is it possible to omit nodePort part? Could you provide example?

Solution

Is it possible to omit nodePort part?

Yes and No.

Not directly. Kubernetes always exposes external services even LoadBalancer type of services on a node port.
Yes. If you front it with a load balancer. Either your own that forwards port 80 and/or 443 to your NodePort or a LoadBalancer type of service which essentially sets up an external load balancer that forwards traffic to your NodePort.

Could you provide an example?

The NodePort service to expose your ingress is basically the same, you just need to setup your own external load balancer. (i.e AWS ELB/ALB/NLB, GCP load balancer, Azure load balancer, F5, etc, etc)

kind: Service
apiVersion: v1
metadata:
  name: traefik-ingress-service
  namespace: kube-system
spec:
  selector:
    k8s-app: traefik-ingress-lb
  ports:
    - protocol: TCP
      port: 80
      name: web
    - protocol: TCP
      port: 8080
      name: admin
  type: NodePort

The LoadBalancer type is just a change on the type of service:

kind: Service
apiVersion: v1
metadata:
  name: traefik-ingress-service
  namespace: kube-system
spec:
  selector:
    k8s-app: traefik-ingress-lb
  ports:
    - protocol: TCP
      port: 80
      name: web
    - protocol: TCP
      port: 8080
      name: admin
  type: LoadBalancer

In the case above, Kubernetes will automatically manage the load balancer in the provider.