一、問題描述
環境：kafka_2.11-0.10.2.1
Kafka開啓生產者和消費者，當生產者發出消息的時候，消費者報錯，而之前採用kafka_2.10-0.8.2.1運行該消費者的時候有沒有問題：
root@hadoop kafka_2.11-0.10.2.1]# bin/kafka-console-consumer.sh --topic dayu --zookeeper hadoop:2181/kafka10_01
Using the ConsoleConsumer with old consumer is deprecated and will be removed in a future major release. Consider using the new consumer by passing [bootstrap-server] instead of [zookeeper].
[2020-03-01 16:55:19,994] WARN [ConsumerFetcherThread-console-consumer-11986_hadoop-1583052858368-33af0818-0-2], Error in fetch kafka.consumer.ConsumerFetcherThread$FetchRequest@66bc1f66 (kafka.consumer.ConsumerFetcherThread)
二、問題原因
kafka_2.11-0.10.2.1升級了消費者命令，採用bootstrap-server參數，而不是之前的zookeeper參數。其實報錯裏面已經很清楚了。
三、解決辦法
1.準備
（1）創建topic
bin/kafka-topics.sh --create --topic dayu --zookeeper hadoop:2181/kafka10_01 --partitions 1 --replication-factor 1
（2）查看topic
bin/kafka-topics.sh --list --zookeeper hadoop:2181/kafka10_01
2.開啓producer
bin/kafka-console-producer.sh --broker-list hadoop:9092 --topic dayu
3.開啓消費者，同時從生產者輸入sdf sdf sdf
[root@hadoop kafka_2.11-0.10.2.1]# bin/kafka-console-consumer.sh --bootstrap-server hadoo9092 --topic dayu
sdf sdf sdf