k3s/examples/walkthrough/v1beta3/service.yaml

apiVersion: v1beta3
kind: Service
metadata:
  name: nginx-example
spec:
  ports:
    - port: 8000 # the port that this service should serve on
      # the container on each pod to connect to, can be a name
      # (e.g. 'www') or a number (e.g. 80)
      targetPort: 80
      protocol: TCP
  # just like the selector in the replication controller,
  # but this time it identifies the set of pods to load balance
  # traffic to.
  selector:
    name: nginx