3.5 Service

kind: Service                                            # When service objects is created it will be assigned an internal cluster ip
apiVersion: v1
metadata:
  name: my-service                                       # When a service with selector is crated, an Endpoints object with the same name is 
spec:                                                    # also created. Endpoints is a collection of endpoints that implement the actual 
  selector:                                              # service. It is updated when service are added/removed
    app: MyApp                                           # Selectors to identify the backing pods 
    env: Pord
  ports:
  - protocol: TCP                                        # Default potocal is TCP
    port: 80                                             # Listen on port 80
    targetPort: 9376                                     # Forward traffice to each selected pod at port 9376. Default to the same
                                                         # port as port field above. Can be a string that reference the port on pod
    
=============================

kind: Service
apiVersion: v1
metadata:
  name: my-service                                       # Service can be created withou selectors, no endpoint is created
spec:
  ports:
  - protocol: TCP
    port: 80
    targetPort: 9376
    
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kind: Endpoints                                          # You can manaully create the endpoint object and point the service
apiVersion: v1                                           # to any ip address you like. Useful when you want to guide traffic
metadata:                                                # to resources under a different namespace or outside of the current
  name: my-service                                       # cluster ( another cluster or not on k8s at all ).
subsets:
  - addresses:
      - ip: 1.2.3.4
    ports:
      - port: 9376