kafka下载安装

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1.https://kafka.apache.org/downloads下载

2.使用Xftp将压缩包上传至Linux root目录下

压缩包解压至 opt目录下,并重命名方便后续操作
代码如下(示例):

[root@localhost ~]# ls
anaconda-ks.cfg  jdk-8u131-linux-x64.tar.gz  kafka_2.12-2.2.0.tgz  zookeeper-3.4.6.tar.gz
[root@localhost ~]# tar zxvf kafka_2.12-2.2.0.tgz -C /opt
kafka_2.12-2.2.0/
kafka_2.12-2.2.0/LICENSE
kafka_2.12-2.2.0/NOTICE

然后重命名

[root@localhost ~]# cd /opt
[root@localhost opt]# ls
kafka_2.12-2.2.0[root@localhost opt]# mv kafka_2.12-2.2.0/ kafka
[root@localhost opt]# ls
kafka
[root@localhost opt]# 

然后修改config目录下的server.properties文件

[root@localhost kafka]# ls
bin  config  kafkaStart.sh  libs  LICENSE  log  logs  NOTICE  site-docs  zookeeper
[root@localhost kafka]# cd config/[root@localhost config]# ls
config                           connect-console-source.properties  connect-file-sink.properties    connect-log4j.properties       consumer.properties  producer.properties  tools-log4j.properties
connect-console-sink.properties  connect-distributed.properties     connect-file-source.properties  connect-standalone.properties  log4j.properties     server.properties    zookeeper.properties
[root@localhost config]# vi server.properties 

主要修改如下配置:

log.dirs=/opt/kafka/log

不要忘记创建log文件夹

[root@localhost config]# cd ..[root@localhost kafka]# mkdir log
[root@localhost kafka]# ls
bin  config  libs  LICENSE  log  NOTICE  site-docs
[root@localhost kafka]# pwd
/opt/kafka
[root@localhost kafka]# 

修改kafka中config目录下zookeeper.properties

vi zookeeper.properties

dataDir=/opt/kafka/zookeeper/data/dataDir
dataLogDir=/opt/kafka/zookeeper/data/dataLogDir
#theport at which the clients will connect
clientPort=2181#disablethe per-ip limit on the number of connections since this is a non-production config
maxClientCnxns=100
tickTime=2000
initLimit=10

接下来创建刚才提到的文件夹

命令如下:

[root@localhost config]# cd ..[root@localhost kafka]# mkdir zookeeper
[root@localhost kafka]# ls
bin  config  libs  LICENSE  log  NOTICE  site-docs  zookeeper
[root@localhost kafka]# cd zookeeper/[root@localhost zookeeper]# mkdir data
[root@localhost zookeeper]# ls
data
[root@localhost zookeeper]# cd data/[root@localhost data]# mkdir dataDir
[root@localhost data]# ls
dataDir
[root@localhost data]# mkdir dataLogDir
[root@localhost data]# ls
dataDir  dataLogDir
[root@localhost data]# 

编写启动脚本:
在kafka目录下 vi kafkaStart.sh
然后添加如下内容

#!/bin/bash
#启动zookeeper
/opt/kafka/bin/zookeeper-server-start.sh /opt/kafka/config/zookeeper.properties &
sleep 3  #默默等3秒后执行
#启动kafka
/opt/kafka/bin/kafka-server-start.sh /opt/kafka/config/server.properties &

添加脚本执行权限：

[root@localhost kafka]# chmod +x kafkaStart.sh

注意:因为脚本中已经包含zookeeper的开启,因此不需要单独开zookeeper

[root@localhost kafka]# ./kafkaStart.sh 

成功开启kafka
接下来在bin目录创建topic:

创建Topic命令:

[root@localhost bin]# ./kafka-topics.sh --create --zookeeper localhost:2181--replication-factor 1--partitions 1--topic test

test是topic名称 可以随变换

出现Created topic test即创建成功
查询创建的top主题 出现test则为正常

查询Topic命令:

./kafka-topics.sh --list --zookeeper localhost:2181

删除topic:

删除topic命令:

./kafka-topics.sh --delete --zookeeper localhost:2181--topic test

创建Producer命令:

[root@localhost bin]# ./kafka-console-producer.sh --broker-list localhost:9092--topic test

创建消费者:
在XShell中开启另一个会话:

创建Consumer命令:

[root@localhost bin]# ./kafka-console-consumer.sh --bootstrap-server localhost:9092--topic test --from-beginning

生产者发送消息:

消费者收到消息:

发送消息后,消费者会话框会变成叹号

关闭的话需要jps查出

然后再关闭kafka,之后是zookeeper,要先关kafka