Unable to connect to pod using ingress - kubernetes

Question

I am trying to configure one python flask application running in port 5000 in kubernetes. I have created the deployment, service and ingress. It is not working using the domain name which is added to hosts file, but python application is working when i have tried from port forwarding.
I have tried a lot changing the configurations, but no thing worked.
Please let me know your suggestions.
kind: Deployment
metadata:
name: web-app
namespace: production
labels:
app: web-app
platform: python
spec:
replicas:
selector:
matchLabels:
app: web-app
template:
metadata:
labels:
app: web-app
spec:
containers:
- name: web-app
image: XXXXXX/XXXXXX:XXXXXX
imagePullPolicy: Always
ports:
- containerPort: 5000
apiVersion: v1
kind: Service
metadata:
name: web-app
namespace: production
spec:
selector:
app: web-app
ports:
- protocol: TCP
port: 5000
targetPort: 5000
selector:
run: web-app
kind: Ingress
metadata:
name: name-virtual-host-ingress
namespace: production
spec:
rules:
- host: first.bar.com
http:
paths:
- backend:
serviceName: web-app
servicePort: 5000
kubectl get all -n production
NAME READY STATUS RESTARTS AGE
pod/web-app-559df5fc4-67nbn 1/1 Running 0 24m
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
service/web-app ClusterIP 10.100.122.15 <none> 5000/TCP 24m
NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE
deployment.apps/web-app 1 1 1 1 24m
NAME DESIRED CURRENT READY AGE
replicaset.apps/web-app-559df5fc4 1 1 1 24m
kubectl get ing -n production
NAME HOSTS ADDRESS PORTS AGE
name-virtual-host-ingress first.bar.com 80 32s
kubectl get ep web-app -n production
NAME ENDPOINTS AGE
web-app <none> 23m

Answer 1

You need to run a Ingress Controller. The Prerequisites part of https://kubernetes.io/docs/concepts/services-networking/ingress/#prerequisites says:
You must have an ingress controller to satisfy an Ingress. Only creating an Ingress resource has no effect.
One example would be https://kubernetes.github.io/ingress-nginx/deploy/. Be sure to run the Mandatory Command and the one that pertains to your provider. You can then get the service to see the assigned IP:
kubectl get -n ingress-nginx svc/ingress-nginx