Centos6.5下kafka部署安装
一）安装JDK步骤1：新建路径/usr/Java, 并在其下解压 jdk-7u71-linux-x64.tar.gz
# mkdir -p /usr/java
# tar -zxvf jdk-7u71-linux-x64.tar.gz
步骤2：添加JDK到系统环境变量
# vi /etc/profile
新增以下内容：
export JAVA_HOME=/usr/java/jdk1.7.0_71
export PATH=$JAVA_HOME/bin:$PATH
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
步骤3：使配置生效
source /etc/profile #使配置文件立即生效
# java -version //JDK版本java version "1.7.0_79" 也可以，目前JDK1.8版本不支持；
Java version "1.7.0_71"
Java(TM) SE Runtime Environment (build 1.7.0_71-b14)
Java HotSpot(TM) 64-Bit Server VM (build 24.71-b01, mixed mode)
二）安装zookeeper
步骤1：解压zookeeper安装包(路径无关，安装路径可以自定义)
# tar -zxvf zookeeper-3.3.6.tar.gz
步骤2：配置环境变量
# vim /etc/profile
export zookeeper_home=/home/laoyang/zookeeper
#source /etc/profile
# sh $zookeeper_home/bin/zkServer.sh start
JMX enabled by default
Using config: /home/laoyang/zookeeper/bin/../conf/zoo.cfg
grep: /home/laoyang/zookeeper/bin/../conf/zoo.cfg: No such file or directory
Starting zookeeper ... STARTED
三）安装kafka
步骤1：解压&移动到/usr/local
# tar -xzvf kafka_2.11-0.9.0.1.tgz
# mv kafka_2.11-0.9.0.1 /usr/local/kafka
步骤2：配置kafka，修改server.properties
# mkdir /usr/local/kafka/log/kafka #创建kafka日志目录
# cd /usr/local/kafka/config #进入配置目录
# vim server.properties #编辑修改相应的参数
[*]broker.id=0
[*]port=9092 #端口号
[*]host.name=10.8.5.101#服务器IP地址，修改为自己的服务器IP
[*]log.dirs=/usr/local/kafka/log/kafka#日志存放路径，上面创建的目录
[*]zookeeper.connect=localhost:2181#zookeeper地址和端口，单机配置部署，localhost:2181
步骤3、配置kafka下的zookeeper
# mkdir /usr/local/kafka/zookeeper #创建zookeeper目录
# mkdir /usr/local/kafka/log/zookeeper #创建zookeeper日志目录
# cd /usr/local/kafka/config #进入配置目录
# vim zookeeper.properties #编辑修改相应的参数
[*]dataDir=/usr/local/kafka/zookeeper #zookeeper数据目录
[*]dataLogDir=/usr/local/kafka/log/zookeeper #zookeeper日志目录
[*]clientPort=2181
[*]maxClientCnxns=100
[*]tickTime=2000
[*]initLimit=10
[*]syncLimit=5
步骤4：创建启动、关闭kafka脚本
1）创建启动kafka脚本
#cd/usr/local/kafka/bin/
# vim kafkastart.sh
[*]#!/bin/bash
[*]#启动zookeeper
[*]/usr/local/kafka/bin/zookeeper-server-start.sh /usr/local/kafka/config/zookeeper.properties &
[*]sleep 3
[*]#Start kafka
[*]/usr/local/kafka/bin/kafka-server-start.sh /usr/local/kafka/config/server.properties &
2）创建关闭kafka脚本
# vim kafkastop.sh
[*]#!/bin/bash
[*]#stop zookeeper
[*]/usr/local/kafka/bin/zookeeper-server-stop.sh /usr/local/kafka/config/zookeeper.properties &
[*]sleep 3
[*]#Stop kafka
[*]/usr/local/kafka/bin/kafka-server-stop.sh /usr/local/kafka/config/server.properties &
3）#添加脚本执行权限
chmod +x kafkastart.sh
chmod +x kafkastop.sh
4）设置脚本开机自动执行
# vim /etc/rc.d/rc.local #编辑，在最后添加一行
[*]sh /usr/local/kafka/kafkastart.sh & ＃设置开机自动在后台运行脚本
[*]sh /usr/local/kafka/kafkastart.sh #启动kafka
[*]sh /usr/local/kafka/kafkastop.sh #关闭kafka
到此为止CentOs6.5下Kafka安装配置完成。
成功标志：
四）测试kafka
步骤1：启动zookeeper
# sh $zookeeper_home/bin/zkServer.sh start
JMX enabled by default
Using config: /home/laoyang/zookeeper/bin/../conf/zoo.cfg
grep: /home/laoyang/zookeeper/bin/../conf/zoo.cfg: No such file or directory
Starting zookeeper ... STARTED
步骤2：启动kafka
# ./kafkastart.sh
步骤3：测试创建topic
# cd /usr/local/kafka/bin
# ./kafka-topics.sh --create --zookeeper localhost:2181 --replication-factor 1 --partitions 1 --topic test
步骤4：通过list命令查看创建的topic
# cd /usr/local/kafka/bin
# ./kafka-topics.sh –list –zookeeper localhost:2181
步骤5：生产消息测试
# ./kafka-console-producer.sh --broker-list localhost:9092 --topic test
Kafka test! //这里的“Kafka test!”为手动输入的，输入后“ctrl +c”退出；
步骤6：消费消息测试
# ./kafka-console-consumer.sh --zookeeper localhost:2181 --topic test --from-beginning
I'm laoyang#之前测试输入的内容
kafka test!
经过上面几步，代表kafka安装成功。
五）停止kafka
步骤1：停止Kafka
cd /usr/local/kafka
# ./kafkastop.sh //这里的kafka进程并没有关掉，需要手动kill
步骤2：停止Zookeeper server
# sh $zookeeper_home/bin/zkServer.sh stop
至此，启动，测试，停止全过程ok。
kafka启动过程中的报错：
WARN caught end of stream exception (org.apache.zookeeper.server.NIOServerCnxn)
EndOfStreamException: Unable to read additional data from client sessionid 0x157ac94cd940002, likely client has closed socket
at org.apache.zookeeper.server.NIOServerCnxn.doIO(NIOServerCnxn.java:228)
at org.apache.zookeeper.server.NIOServerCnxnFactory.run(NIOServerCnxnFactory.java:208)
at java.lang.Thread.run(Thread.java:745)
报错原因：
zookeeper服务端和客户端的jar版本不一致导致的 ；
解决办法：
从zookeeper服务端安装目录的根目录复制zookeeper-xxx.jar到kafka安装目录下的libs目录下即可，将kafka下libs目录下的jar包删除；
报错：
java.lang.RuntimeException: A broker is already registered on the path /brokers/ids/1. This probably indicates that you either have configured a brokerid that is already in use, or else you have shutdown this broker and restarted it faster than the zookeeper timeout so it appears to be re-registering.
at kafka.utils.ZkUtils$.registerBrokerInZk(ZkUtils.scala:205)
at kafka.server.KafkaHealthcheck.register(KafkaHealthcheck.scala:57)
at kafka.server.KafkaHealthcheck.startup(KafkaHealthcheck.scala:44)
at kafka.server.KafkaServer.startup(KafkaServer.scala:103)
at kafka.server.KafkaServerStartable.startup(KafkaServerStartable.scala:34)
at kafka.Kafka$.main(Kafka.scala:46)
at kafka.Kafka.main(Kafka.scala)
报错原因：
该错误是由于server.properties 中的broker.id 重复
解决办法：
# vim server.properties
# The id of the broker. This must be set to a unique integer for each broker.
broker.id=0
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