Return Custom Response Headers with Kubernetes Ingress

How to Return Custom Response Headers with Nginx Ingress in Kubernetes

This is useful when you want to check which Ingress is responding among multiple Ingresses.

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: ...
  namespace: ...
  annotations:
    nginx.ingress.kubernetes.io/configuration-snippet: |
      more_set_headers "X-Ingress-Name: my-awesome-ingress";
      more_set_headers "X-Other-header: other-header";
spec: