Do not forget to configure ingress setup with something like this under the rules section:
- host: $WWW_FEEDBACK_HOST
http:
paths:
- path: /
backend:
serviceName: feedback-server-service-$VERSION
servicePort: 4003
- host: $FEEDBACK_HOST
http:
paths:
- path: /
backend:
serviceName: feedback-server-service-$VERSION
servicePort: 4003