Blazor server through k8s ingress controller - kubernetes

Question

I've written a small Blazor application which looks to work all well when containerized and when accessed through k3s port forwarding, but struggling to find a guideline on how that application needs to be correctly exposed via a ingress controller. To show this:
If I run the Blazor application and access via port-forwarding (blazor routing works perfectly well etc.):
kubectl port-forward deployment/ 8000:80
and page routing working as expected
However, when I add a clusterIP service to the deployment and connect to it through Traefik ingress controller, I get:
and changing the route will give a 404 page not found error
My Ingress serviceIp and ingress controller setup:
ClusterIP:
apiVersion: v1
kind: Service
metadata:
name: driverpassthrough
spec:
selector:
app: driverpassthrough
ports:
- name: ui
protocol: TCP
port: 8010
targetPort: 80
ingress
apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
name: ingress-test
annotations:
kubernetes.io/ingress.class: "traefik"
traefik.ingress.kubernetes.io/rewrite-target: /
spec:
rules:
- http:
paths:
- path: /passthrough
backend:
serviceName: driverpassthrough
servicePort: 8010

Answer 1

so in my case, I use k3s and traefik. I also have 3 replicas of my blazor server app. To make it work, I had to enable sticky session (in annotations) on the cluster ip like so:
Service
apiVersion: v1
kind: Service
metadata:
name: qscale-healthcheck-service
annotations:
traefik.ingress.kubernetes.io/affinity: "true"
labels:
name: qscale-healthcheck-service
spec:
type: ClusterIP
selector:
app: healthcheck
ports:
- name: http
port: 80
targetPort: 80
Ingress
apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
name: traefik-ingress
annotations:
kubernetes.io/ingress.class: "traefik"
spec:
rules:
- http:
paths:
- path: /
backend:
serviceName: qscale-healthcheck-service
servicePort: 80
This is the link where I found the annotation: Traefik Doc