Ingress unable to find backend service in Kubernetes v1.21.5 - express

Question

I am using Kubernetes v1.21.5 on docker. The following is my ingress YAML file
kind: Ingress
metadata:
name: ingress-service
annotations:
kubernetes.io/ingress.class: nginx
nginx.ingress.kubernetes.io/use-regex: "true"
spec:
rules:
- host: triver.dev
http:
paths:
- path: /service/account/?(.*)
pathType: Prefix
backend:
service:
name: auth-srv
port:
number: 3000
I am running an auth srv image and the following is its YAML file
kind: Deployment
metadata:
name: auth-depl
spec:
replicas: 1
selector:
matchLabels:
app: auth
template:
metadata:
labels:
app: auth
spec:
containers:
- name: auth
image: triver/auth
env:
- name: MONGO_URI
value: 'mongodb://mongo-srv:27017/auth'
- name: JWT_KEY
valueFrom:
secretKeyRef:
name: jwt-secret
key: JWT_KEY
---
apiVersion: v1
kind: Service
metadata:
name: auth-srv
spec:
selector:
app: auth
ports:
- name: auth
protocol: TCP
port: 3000
targetPort: 3000
but when I try to send a request to any route that I created in auth service for example I created a triver.dev/service/account/signup post express router for a user to signup. When I try to send a post request to the route through Postman it gives an error (404) of ECONNRefused. Couldn't send a request. Why is it happening? (My postman is working fine. It's not an issue on the postman end.)
What am I doing wrong
The app works but I just can't access the route. It's definitely an ingress issue. Can someone help me, please? This is a very important project.
This is what show up when I use the command 'kubectl get ingress'
Everything works fine when I run the application using skaffold dev.

Answer 1

it's due to you have not mentioned the hostname into the ingress, also make sure your ingress controller is running
example ingress
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: example-ingress
annotations:
nginx.ingress.kubernetes.io/rewrite-target: /$1
spec:
rules:
- host: hello-world.info
http:
paths:
- path: /
pathType: Prefix
backend:
service:
name: web
port:
number: 8080
host: hello-world.info
Reference : https://kubernetes.io/docs/tasks/access-application-cluster/ingress-minikube/
you can also checkout : https://kubernetes.io/docs/concepts/services-networking/ingress/
if you have set default backend set in ingress and host is not issue
make sure you are sending the request on HTTP instead of HTTPS
nginx.ingress.kubernetes.io/ssl-redirect: "false"
as you are not using the certificate SSL/TLS so please try the URL with HTTP