Can't connect to AKS ingress from internet

Question

I have an ingress-nginx ingress for my Kubernetes service.
If I curl the external IP from inside the cluster, like from a pod such as this kubectl run my-shell --rm -i --tty --image ubuntu -- bash, I get the result I expect.
If I curl from the internet, It times out. What could be the problem?

Resources online have pointed me to check my firewall and NSG settings. I see one of my NSGs has an explicit exception for the IP chosen by the ingress-nginx ingress, which seems to update automatically. Is there a way to see if there are other firewalls and network security groups between my AKS cluster and the internet?

This problem began after updating from kubernetes 1.19 to 1.22

Answer 1

I deleted the kubernetes cluster and recreated it. this resolved the issue but was obviously very destructive. If you have the same issue I wish you luck.

Answer 2

Just run into the same problem without upgrading. Identical to this in regards to external IP now unavailable despite no cluster changes but can still be curled inside the cluster.