Question: Using Gateway and TCPRoute with non-standard port

Traefik Traefik v3 (latest)
, ,
1

I would to expose a database in Kubernetes which uses a proprietary TCP protocol BOLT of port 4317/TCP. So I created a Gateway like this

apiVersion: gateway.networking.k8s.io/v1
kind: Gateway
metadata:
  name: neo4j
  namespace: persistence
spec:
  gatewayClassName: traefik
  listeners:
  - allowedRoutes:
      namespaces:
        from: Same
    name: bolt
    port: 7687
    protocol: TCP

and a TCPRoute like this

apiVersion: gateway.networking.k8s.io/v1alpha2
kind: TCPRoute
metadata:
  name: neo4j-bolt
  namespace: persistence
spec:
  parentRefs:
  - group: gateway.networking.k8s.io
    kind: Gateway
    name: neo4j
    sectionName: bolt
  rules:
  - backendRefs:
    - group: ""
      kind: Service
      name: neo4j
      namespace: persistence
      port: 7687
      weight: 1

It did not work first, then I realized that traefik is actually not listening itself on port 4317 on the external load balancer, so I added the following configuration to the Helm chart:

ports:
  bolt:
    port: 7687
    expose:
      default: true

This is working. My question is: Is this the way to go or is there an automation that I am missing?

Regards,

DK