Kubernetes configuration is not applying correct port service mapping to app gateway

Question

I have an App Gateway managed by Azure Kubernetes - changes I make to my kubernetes.yaml are meant to be applied to this instance of App Gateway

2 of the services I have defined are working correctly, they have services on port 80 and port 81

For some reason the service running on port 82 is not being mapped correctly, I end up with this in my back end settings

I don't understand why this is happening given all 3 services are configured the same other than the port numbers?

apiVersion: apps/v1
kind: Deployment
metadata:
name: hydra
spec:
template:
metadata:
name: hydra
labels:
app: hydra
spec:
nodeSelector:
"kubernetes.azure.com/os-sku": Windows2022
containers:

• name: hydra
  image: icognitionhydra.azurecr.io/hydra
  selector:
  matchLabels:
  app: hydra

---

apiVersion: apps/v1
kind: Deployment
metadata:
name: hydraintegrationofficeweb
spec:
template:
metadata:
name: hydraintegrationofficeweb
labels:
app: hydraintegrationofficeweb
spec:
nodeSelector:
"kubernetes.azure.com/os-sku": Windows2022
containers:

• name: hydraintegrationofficeweb
  image: icognitionhydra.azurecr.io/hydraintegrationofficeweb
  selector:
  matchLabels:
  app: hydraintegrationofficeweb

---

apiVersion: apps/v1
kind: Deployment
metadata:
name: hydraintegrationteams
spec:
template:
metadata:
name: hydraintegrationteams
labels:
app: hydraintegrationteams
spec:
nodeSelector:
"kubernetes.azure.com/os-sku": Windows2022
containers:

• name: hydraintegrationteams
  image: icognitionhydra.azurecr.io/hydraintegrationteams
  selector:
  matchLabels:
  app: hydraintegrationteams

---

apiVersion: v1
kind: Service
metadata:
name: hydra
spec:
ports:

• protocol: TCP
  port: 80
  targetPort: 80
  selector:
  app: hydra

---

apiVersion: v1
kind: Service
metadata:
name: hydraintegrationofficeweb
spec:
ports:

• protocol: TCP
  port: 81
  targetPort: 80
  selector:
  app: hydraintegrationofficeweb

---

apiVersion: v1
kind: Service
metadata:
name: hydraintegrationteams
spec:
ports:

• protocol: TCP
  port: 82
  targetPort: 80
  selector:
  app: hydraintegrationteams

---

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: hydra
annotations:
kubernetes.io/ingress.class: azure/application-gateway
appgw.ingress.kubernetes.io/ssl-redirect: "true"
appgw.ingress.kubernetes.io/appgw-ssl-certificate: "icognition.cloud"
spec:
rules:

• host: hydrakubernetes.icognition.cloud
  http:
  paths:
• path: /
  pathType: Exact
  backend:
  service:
  name: hydra
  port:
  number: 80
• host: hydrakubernetesintegrationofficeweb.icognition.cloud
  http:
  paths:
• path: /
  pathType: Exact
  backend:
  service:
  name: hydraintegrationofficeweb
  port:
  number: 81
• host: hydrakubernetesintegrationteams.icognition.cloud
  http:
  paths:
• path: /
  pathType: Exact
  backend:
  service:
  name: hydrakubernetesintegrationteams
  port:
  number: 82

Answer 1

Hello @catmanjan ,
Welcome to Microsoft QnA!
There is a small mistake in your Ingress manifest.
For the third service mapping in the Ingress yaml, you have provided the service name as hydrakubernetesintegrationteams instead of hydraintegrationteams.
Could you please check and correct that?
I will look forward to your response (please tag me in your reply.
Thanks.

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