Can't create ReplicationController for Nginx in Kubernetes
You can get information with kubectl describe pod xxx, as you did.And more information with kubectl get pod xxx -o yaml (this pretty much gives you everything the cluster knows about the pod).And finally, check the pod's logs with kubect logs xxx.
When I reproduce with your manifest yaml file, kubectl get pod xxx shows:kubectl logs nginx-ingress-controller-test-4mgw7
I1117 08:44:11.650301 1 main.go:94] Using build: https://github.com/bprashanth/contrib.git - git-92b2bacF1117 08:44:11.703533 1 main.go:121] no service with name default/default-http-backend found: services "default-http-backend" not found
So there you go, you're missing a backend service.
Tip: an easier way to install the ingress nginx controler could be:helm install ing-nginx-ctrl stable/nginx-ingress
There's an helm chart for it.