Ingress-Nginx on Azure Kubernetes Cluster always routes to a 404 page

Question

When applying the yaml file to the ingress services a load balancer is created. I pointed my DNS domain to that load balancer IP and it reaches the nginx server. However when routing to https://www.mydomain.com/api/users/ or https://www.mydomain.com/api/users/currentuser/ it returns a 404 page. Here is the Ingress-Nginx yaml file I'm using:

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: ingress-service
  annotations:
    kubernetes.io/ingress.class: nginx
    nginx.ingress.kubernetes.io/use-regex: "true"
spec:
  rules:
    - host: www.mydomain.com
      http:
        paths:
          - path: /api/users/
            pathType: Prefix
            backend:
              service:
                name: be-auth-srv
                port:
                  number: 9001
          - path: /auth/
            pathType: Prefix
            backend:
              service:
                name: be-contact-form-srv
                port:
                  number: 9000

Anybody can shed light on this topic? Thanks

Answer 1

Hello @Manel Castro

There could many reasons why your Ingress does not work as expected

1. Make sure your services are listening on the ports specified in your ingress (9001 and 9000 respectively).
   Examples for Service be-auth-srv

apiVersion: v1
kind: Service
metadata:
  name: be-auth-srv
spec:
  selector:
    app: be-auth-app
  ports:
    - protocol: TCP
      port: 9001
      targetPort: 8080

1. Make sure that services be-auth-srv and be-contact-form-srv exist in the same namespace as your Ingress controller
2. You may need to verify Nginx Ingress Controller logs kubectl logs <ingress-controller-pod-name>
3. Check if you really need annotation **nginx.ingress.kubernetes.io/use-regex: "true" **as your paths seem to be static