test kafka bootstrap server code example
Example: kafka-topics.sh --bootstrap-server multi server
bin/kafka-console-consumer.sh --bootstrap-server localhost:9092,localhost:9093,localhost:9094 --from-beginning --topic my-replicated-topic
bin/kafka-console-consumer.sh --bootstrap-server localhost:9092,localhost:9093,localhost:9094 --from-beginning --topic my-replicated-topic