Centos6.5下kafka如何部署安装

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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

1. broker.id=0

2. port=9092 #端口号

3. host.name=10.8.5.101  #服务器IP地址，修改为自己的服务器IP

4. log.dirs=/usr/local/kafka/log/kafka  #日志存放路径，上面创建的目录

5. 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

1. dataDir=/usr/local/kafka/zookeeper #zookeeper数据目录

2. dataLogDir=/usr/local/kafka/log/zookeeper #zookeeper日志目录

3. clientPort=2181

4. maxClientCnxns=100

5. tickTime=2000

6. initLimit=10

7. 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

1. #!/bin/bash

2. #启动zookeeper

3. /usr/local/kafka/bin/zookeeper-server-start.sh /usr/local/kafka/config/zookeeper.properties &

4. sleep 3
   

5. #Start kafka

6. /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

1. #!/bin/bash

2. #stop zookeeper

3. /usr/local/kafka/bin/zookeeper-server-stop.sh /usr/local/kafka/config/zookeeper.properties &

4. sleep 3
   

5. #Stop kafka

6. /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

1. sh /usr/local/kafka/kafkastart.sh & ＃设置开机自动在后台运行脚本

2. sh /usr/local/kafka/kafkastart.sh #启动kafka

3. 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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