创建一个topic:
[root@hdp1 bin]# ./kafka-topics.sh --create --zookeeper hdp1:2181 --replication-factor 1 --partitions 1 --topic justin
Created topic "justin".
[root@hdp1 bin]# pwd
/usr/hdp/2.2.6.0-2800/kafka/bin
在zookeeper中可以查看到刚才创建的topic:
[zk: hdp1:2181(CONNECTED) 4] ls /brokers/topics
[topic1, ambari_kafka_service_check, justin, test, kafkaToptic]
由于在创建topic的时候,指定—partitions为1,所有在zookeeper中看到的分区数为一个:
[zk: hdp1:2181(CONNECTED) 7] ls /brokers/topics/justin/partitions
[0]
[zk: hdp1:2181(CONNECTED) 8] ls /brokers/topics/justin/partitions/0
[state]
[zk: hdp1:2181(CONNECTED) 9] ls /brokers/topics/justin/partitions/0/state
[]
[zk: hdp1:2181(CONNECTED) 10] ls /brokers/topics/justin/partitions/0
[state]
[zk: hdp1:2181(CONNECTED) 11] ls /brokers/topics/justin/partitions/0/state
[]
kafka自带脚本也可以查看到zookeeper中创建的topic:
[root@hdp1 bin]# ./kafka-topics.sh --list --zookeeper hdp1:2181
ambari_kafka_service_check
justin
kafkaToptic
test
topic1
使用生产者,往kafka队列的justin主题(类似于bigpipe的pipe,partition和bigpipe的pipelet类似)发送两条消息:
[root@hdp1 bin]# ./kafka-console-producer.sh --broker-list hdp1:6667 --topic justin
justinzhang
This is another justin
使用消费者,从kafka队列的topic中获取消息,—from-beginning表示从开始处订阅:
[root@hdp1 bin]# ./kafka-console-consumer.sh --zookeeper hdp1:2181 --topic justin --from-beginning
justinzhang
This is another justin
可以使用将标准输入定位到文件的方式,往broker发送文件:
[root@hdp1 bin]# ./kafka-console-producer.sh --broker-list hdp1:6667 --topic justin < kafka-server-stop.sh
多个订阅者都可以收到生产者发送的消息。