ingress nginx 404 not found - kubernetes

Question

Created a kubernetes cluster, and installed ingress-nginx controller. I am getting a 404 not found if i go to the ingress-nginx-controller load balancer external ip that is aa************.us-east-1.elb.amazonaws.com
helm repo add ingress-nginx https://kubernetes.github.io/ingress-nginx
helm repo update
kubectl create namespace ingress-nginx
helm install ingress-nginx -n ingress-nginx ingress-nginx/ingress-nginx
to get the service:
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
ingress-nginx-controller LoadBalancer 10.100.219.162 aa************.us-east-1.elb.amazonaws.com 80:32091/TCP,443:32305/TCP 154m
ingress-nginx-controller-admission ClusterIP 10.100.208.135 <none> 443/TCP 154m
my ingress.yaml
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: factory
annotations:
kubernetes.io/ingress.class: nginx
spec:
rules:
- host: factory.**.com
http:
paths:
- path: /
pathType: Prefix
backend:
service:
name: factory
port:
number: 80
- host: api.factory.**.com # myfactoryapi-factorydomain.com
http:
paths:
- path: /
pathType: Prefix
backend:
service:
name: factory
port:
number: 8082
all my namespace
kubectl get namespace
NAME STATUS AGE
default Active 34d
ingress-nginx Active 160m
kerberos-factory Active 34d
kube-node-lease Active 34d
kube-public Active 34d
kube-system Active 34d
mongodb Active 8d
to get my ingress
kubectl get ing -n kerberos-factory
NAME CLASS HOSTS ADDRESS PORTS AGE
factory <none> factory.**.com,api.factory.**.com a****.us-east-1.elb.amazonaws.com 80 65m
to describe the ingress
kubectl describe ing -n kerberos-factory
Name: factory
Namespace: kerberos-factory
Address: a********.us-east-1.elb.amazonaws.com
Default backend: default-http-backend:80 (<error: endpoints "default-http-backend" not found>)
Rules:
Host Path Backends
---- ---- --------
factory.***.com
/ factory:80 (192.168.34.220:80)
api.factory.***.com
/ factory:8082 (192.168.34.220:8082)
Annotations: kubernetes.io/ingress.class: nginx
Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Normal Sync 3m8s (x3 over 4m51s) nginx-ingress-controller Scheduled for sync
why am i getting 404 not found