If you want to access services running inside your cluster, you need to expose them externally. Update the service type from ClusterIP to LoadBalancer in your service.yaml files. That should create a publicly accessible endpoint for your Kafka. You can see what the public IP address is by running kubectl get services.

You may need to update kafka service 2 and 3 to run on different ports (e.g. 9093,9094) in order to make them publicly accessible.

This method of running Kafka may not be very useful beyond testing purposes. None of the Kafka pods have persistent storage making your topics vulnerable to data loss.