一、问题描述

环境：kafka_2.11-0.10.2.1
Kafka开启生产者和消费者，当生产者发出消息的时候，消费者报错，而之前采用kafka_2.10-0.8.2.1运行该消费者的时候有没有问题：
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、问题原因

kafka_2.11-0.10.2.1升级了消费者命令，采用bootstrap-server参数，而不是之前的zookeeper参数。其实报错里面已经很清楚了。

三、解决办法

1.准备

（1）创建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.开启producer

bin/kafka-console-producer.sh --broker-list hadoop:9092 --topic dayu

3.开启消费者，同时从生产者输入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