SUSE中搭建kafka

 搭建环境：

• JDK: java version 1.8.0_221
• zookeeper：zookeeper-3.5.2
• kafka: kafka-2.11-1.1.0

一、安装JDK

由于需要java环境，所以我们需先安装JDK

1、下载JDK并解压

mkdir /usr/java     //在usr下创建java

cp jdk-8u221-linux-x64.tar.gz /usr/java/     //将下载好的JDK文件copy到/usr/java目录

cd /usr/java

tar -xzvf jdk-8u221-linux-x64.tar.gz    //解压到当前目录

2、配置环境变量

vi /etc/profile

将下面内容添加到文件最后：

JAVA_HOME=/usr/java/jdk1..0_221
CLASSPATH=$JAVA_HOME/lib/
PATH=$PATH:$JAVA_HOME/bin
export PATH JAVA_HOME CLASSPATH

保存后退出，并执行

source /etc/profile  //使环境变量生效

3、查看安装情况

java -version

有时会遇到：

每次打开一个终端，都要输入source /etc/profile 环境变量才会生效！

解决方法：

vi ~/.bashrc
将  source /etc/profile  添加到bashrc文件中

 

 二、安装kafka 1.1.0

kafka下载地址：http://kafka.apache.org/downloads

1、（这个安装是真滴难受，各种报错...）

下载好后，解压压缩包，并进入其目录

tar -xzvf kafka_2.11-1.1.0.tgz

cd kafka_2.-1.1.

2、这里，需先在一个终端启动zookeeper服务

bin/zookeeper-server-start.sh config/zookeeper.properties &  //

我用的kafka自带的zookeeper-server-start.sh启动zookeeper服务，然后就各种报错启动不来kafka，最后我直接去官网上下载zookeeper，重新自己安装

安装方法可以参考文章：https://www.jianshu.com/p/7dcec9758614

3、然后打开另一个终端，再启动kafka服务

bin/kafka-server-start.sh config/server.properties

4、测试一下

创建名为“test”的 topic，并查看

linux-ym54:/usr/local/kafka/kafka_2.11-1.1.0 # bin/kafka-topics.sh --create --zookeeper localhost:2181 --replication-factor 1 --partitions 1 --topic test
Created topic "test".
linux-ym54:/usr/local/kafka/kafka_2.11-1.1.0 # bin/kafka-topics.sh --list --zookeeper localhost:2181 
test

发送消息：

bin/kafka-console-producer.sh --broker-list localhost:9092 --topic test

接收消息：

bin/kafka-console-consumer.sh --bootstrap-server localhost:9092 --topic test --from-beginning

有时会遇到：

• 在启动zookeeper服务时，会出现

INFO Closed socket connection for client /127.0.0.1: which had sessionid 0x15698f5ac360001 (org.apache.zookeeper.server.NIOServerCnxn)

That is not an error. The topic details are fetched from Zookeeper. Hence the client (invoked by kafka-topics.sh) first connects to Zookeeper, then establishes a session, gets the data and then disconnects at the end. This is the expected behavior of any clients that will get some data from Zookeeper.

• 在启动kafka服务时，会出现

[2019-08-10 09:59:58,527] ERROR [KafkaServer id=0] Fatal error during KafkaServer startup. Prepare to shutdown (kafka.server.KafkaServer)
java.net.UnknownHostException: linux-ym54: linux-ym54: Name or service not known
    at java.net.InetAddress.getLocalHost(InetAddress.java:1506)
    at kafka.server.KafkaServer$$anonfun$3.apply(KafkaServer.scala:387)
    at kafka.server.KafkaServer$$anonfun$3.apply(KafkaServer.scala:385)
    at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
    at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
    at scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59)
    at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:48)
    at scala.collection.TraversableLike$class.map(TraversableLike.scala:234)
    at scala.collection.AbstractTraversable.map(Traversable.scala:104)
    at kafka.server.KafkaServer.createBrokerInfo(KafkaServer.scala:385)
    at kafka.server.KafkaServer.startup(KafkaServer.scala:253)
    at kafka.server.KafkaServerStartable.startup(KafkaServerStartable.scala:38)
    at kafka.Kafka$.main(Kafka.scala:92)
    at kafka.Kafka.main(Kafka.scala)
Caused by: java.net.UnknownHostException: linux-ym54: Name or service not known
    at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
    at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:929)
    at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1324)
    at java.net.InetAddress.getLocalHost(InetAddress.java:1501)
    ... 13 more

修改 /etc/hosts文件，

把 “ your ip     localhost ” 添加进去

三、kafka在windows中的安装

可以参考文章：https://blog.csdn.net/u012050154/article/details/76270655

有时会遇到：

xshell连接不上的问题！

• 检查ssh是否开启

service sshd status   

• 检查22端口是否开放

• 最后检查发现是防火墙导致的

关闭防火墙，然后重启。

linux-ym54:/home/ilk/Desktop # systemctl list-dependencies |grep firewall
●   ├─SuSEfirewall2.service
●   ├─SuSEfirewall2_init.service
linux-ym54:/home/ilk/Desktop # chkconfig SuSEfirewall2 off
Removed symlink /etc/systemd/system/multi-user.target.wants/SuSEfirewall2.service.
Removed symlink /etc/systemd/system/multi-user.target.wants/SuSEfirewall2_init.service.
Removed symlink /etc/systemd/system/SuSEfirewall2_setup.serv