service.yaml

kind: Service
apiVersion: v1
metadata:
  # can be the same, must not be, however
  name: webserver
spec: 
  selector:
    # this HAS to have exactly the same value of one (or more) 
    # of the labels defined in the pod.
    app: webserver
  # defines which port(s) we are going to expose
  ports:
    - name: http
      port: 80 # port of the running service
      nodePort: 30080 # outside world port. A limitation of NodePorts is that the number of the port has to be greater than 30000.

  # the type of service defines to where we want to expose 
  # type: ClusterIp # exposes the service only internally for kubernetes cluster
  type: NodePort # exposes service port to the outside world
  # type: LoadBallancer # exposes service using a LoadBallancer. Not supported on clusters that do not have an integrated load ballancer (such as minikube).