k3s/examples/guestbook-go/guestbook-service.json

{
  "apiVersion": "v1beta1",
  "kind": "Service",
  "id": "guestbook",
  "port": 3000,
  "containerPort": "http-server",
  "selector": { "name": "guestbook" },
  "createExternalLoadBalancer": true
}