Difference between targetPort and port in Kubernetes Service definition

Question

A Kubernetes Service can have a targetPort and port in the service definition:

kind: Servi         


        

Answer 1

This answer is to reference Kubernetes' documentation in addition to the other answers:

https://kubernetes.io/docs/concepts/services-networking/connect-applications-service/:

targetPort: is the port the container accepts traffic on,

port: is the abstracted Service port, which can be any port other pods use to access the Service

https://kubernetes.io/docs/concepts/services-networking/service/:

Port definitions in Pods have names, and you can reference these names in the targetPort attribute of a Service. This works even if there is a mixture of Pods in the Service using a single configured name, with the same network protocol available via different port numbers.