I am getting "404 page not found" while accessing the rancher UI. But all the pods seems to be running fine. I deployed rancher in a k3s cluster. Any pointers on how to fix this issue or at least which pod logs I should look for

what about services in cattle-system?

svc/rancher seems to be fine

What version of rancher are you running? Is this the first time you've access that rancher, or after an upgrade, or it's suddenly started happening? What happens if you use the exact hostname supplied when rancher was created (without any path)?

Rancher is latest v2.10.3. Our setup is a k3s cluster in Azure with load balancer on top of it. It has been working until last 2 days, we are suspecting its an issue with Azure load balancer. We can manually login to VM and see k3s cluster and pods are running fine.