Kafka 最新版配置及测试

当前基于kafaka最新版 kafka_2.12-2.2.1.tgz 进行配置 。

官网地址：http://kafka.apache.org/intro

kafka的一些基础知识 参考：http://www.hechunbo.com/index.php/archives/140.html

1. 配置java环境安装jdk

   参考http://www.hechunbo.com/index.php/archives/132.html

2. 解压kafaka

   [root@localhost hcb]# tar -zxvf kafka_2.12-2.2.1.tgz -C /usr/local
   

3. 启动zookeeper .因为最新版 已经包含有zookeeper 所以不用另外安装了

   [root@localhost kafka_2.12-2.2.1]# bin/zookeeper-server-start.sh config/zookeeper.properties 
   [2019-06-22 17:47:49,667] INFO Reading configuration from: config/zookeeper.properties (org.apache.zookeeper.server.quorum.QuorumPeerConfig)
   

4. 重新开一个连接 。输入jps 发现多了一个进程

   [root@localhost ~]# jps
   3136 Jps
   2842 QuorumPeerMain
   

5. 启动kafka

   [root@localhost kafka_2.12-2.2.1]# ./bin/kafka-server-start.sh config/server.properties 
   [2019-06-22 17:51:18,786] INFO Registered kafka:type=kafka.Log4jController MBean (kafka.utils.Log4jControllerRegistration$)
   [2019-06-22 17:51:20,624] INFO starting (kafka.server.KafkaServer)
   

6. 再开一个连接 输入jps查看当前运行的进程
   发现多了一个kafka

   [root@localhost ~]# jps
   3504 Jps
   2842 QuorumPeerMain
   3147 Kafka
   

7. 创建一个topic

   [root@localhost kafka_2.12-2.2.1]# bin/kafka-topics.sh --create --bootstrap-server localhost:9092 --replication-factor 1 --partitions 1 --topic test
   [root@localhost kafka_2.12-2.2.1]# 
   

8. 查看topic消息

   [root@localhost kafka_2.12-2.2.1]# bin/kafka-topics.sh --list --bootstrap-server localhost:9092
   test
   

9. 发送消息 到test

   [root@localhost kafka_2.12-2.2.1]# bin/kafka-console-producer.sh --broker-list localhost:9092 --topic test
   hi,>welcome to to kafka    
   >hi ,how are you
   

10. 消费者取消息

    [root@localhost kafka_2.12-2.2.1]#  bin/kafka-console-consumer.sh --bootstrap-server localhost:9092 --topic test --from-beginning
    hi,welcome to to kafka
    hi ,how are you 
    

    生产者发送消息以扣，消费者有通知 ，

    1561197972428

11. 进行多台机子测试
    因为我们是单台机子，所以把配置文件复制两份，更改端口和id配置进行第二台，第三台的模拟

    3. [root@localhost ~]# cd /usr/local/kafka_2.12-2.2.1/
       [root@localhost kafka_2.12-2.2.1]# cp config/server.properties config/server-1.properties
       [root@localhost kafka_2.12-2.2.1]# cp config/server.properties config/server-2.properties
       

       修改第二台机子的配置

       vi config/server-1.properties
       log.dirs=/tmp/kafka-logs-1
       listeners=PLAINTEXT://:9093
       broker.id=1
       
       

![1561198817482](https://img.haomeiwen.com/i9129298/90f2d59fb6fee96d.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)

修改第三台机子

```
vi config/server-2.properties
log.dirs=/tmp/kafka-logs-2
listeners=PLAINTEXT://:9094
broker.id=2
```

![1561198876385](https://img.haomeiwen.com/i9129298/1ebc35f5697ff16b.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)

12. 启动新模拟的两台服务器

    [root@localhost kafka_2.12-2.2.1]# bin/kafka-server-start.sh config/server-1.properties 
    [2019-06-22 18:23:56,237] INFO Registered kafka:type=kafka.Log4jController MBean (kafka.utils.Log4jControllerRegistration$)
    

    新开连接 继续启动第三台，顺便查看下当前的进程 。发现有两个kafka存在了

    [root@localhost ~]# jps
    4370 ConsoleProducer
    2842 QuorumPeerMain
    5642 Jps
    3147 Kafka
    4955 ConsoleConsumer
    5278 Kafka
    [root@localhost ~]# cd /usr/local/kafka_2.12-2.2.1/
    ^C[root@localhost kafka_2.12-2.2.1]# bin/kafka-server-start.sh config/server-2.properties 
    [2019-06-22 18:27:31,947] INFO Registered kafka:type=kafka.Log4jController MBean (kafka.utils.Log4jControllerRegistration$)
    

    新开一个连接 ，查看下当前进程 ，三个kafka正常启动了

    [root@localhost ~]# jps
    4370 ConsoleProducer
    6307 Jps
    2842 QuorumPeerMain
    3147 Kafka
    4955 ConsoleConsumer
    5948 Kafka
    5278 Kafka
    

13. 创建一个带有备份的topic

    [root@localhost kafka_2.12-2.2.1]# bin/kafka-topics.sh --create --bootstrap-server localhost:9092 --replication-factor 3 --partitions 1 --topic my-replication-topic
    

14. 查看哪个borke【kafka服务器】在工作

    [root@localhost kafka_2.12-2.2.1]# bin/kafka-topics.sh --describe --bootstrap-server localhost:9092 --topic my-replication-topic
    Topic:my-replication-topic  PartitionCount:1    ReplicationFactor:3 Configs:segment.bytes=1073741824
        Topic: my-replication-topic Partition: 0    Leader: 1   Replicas: 1,2,0 Isr: 1,2,0
    

    leader:哪个broker在读写

    replicas:当前可以正常工作的kafka集群。当leader挂掉时会自动替补

    isr:同步消息的列表集合

15. 查看我们之前创建的topic消息

    当时我们只有一个kafka服务器。可以看只leader是0，替被和备份的都是0，

    [root@localhost kafka_2.12-2.2.1]# bin/kafka-topics.sh --describe --bootstrap-server localhost:9092 --topic test
    Topic:test  PartitionCount:1    ReplicationFactor:1 Configs:segment.bytes=1073741824
        Topic: test Partition: 0    Leader: 0   Replicas: 0 Isr: 0
    

16. 在新的topic中发布新的消息

    [root@localhost kafka_2.12-2.2.1]# bin/kafka-console-producer.sh --broker-list localhost:9092 --topic my-replication-topic
    >message one
    >message two 
    

17. 消费者去获取消息

    [root@localhost kafka_2.12-2.2.1]# bin/kafka-console-consumer.sh  --bootstrap-server  localhost:9092 --from-beginning --topic my-replication-topic
    message one
    message two
    

18. 检查当前的leader

    [root@localhost kafka_2.12-2.2.1]# bin/kafka-topics.sh --describe --bootstrap-server localhost:9092 --topic my-replication-topic
    Topic:my-replication-topic  PartitionCount:1    ReplicationFactor:3 Configs:segment.bytes=1073741824
        Topic: my-replication-topic Partition: 0    Leader: 1   Replicas: 1,2,0 Isr: 1,2,0
    

19. 模拟leader1挂掉以后的状态

    把leader1关掉

    检查leader1的进程

    ps aux 显示用户当前的所有进程 。并根据grep后面的内容进行搜索

    用kill杀死相关进程

    [root@localhost kafka_2.12-2.2.1]# ps aux | grep server-1.properties
    root       5278  3.5 20.5 3232460 205560 pts/5  Sl+  18:23   1:06 /usr/local/jdk1.8.0_211/bin/java -Xmx1G
    [root@localhost kafka_2.12-2.2.1]# kill -9 5278
    

20. 再次检查当前topic的消息

    发现leader已经从1变成了2.

    [root@localhost kafka_2.12-2.2.1]# bin/kafka-topics.sh --describe --bootstrap-server localhost:9092 --topic my-replication-topic
    Topic:my-replication-topic  PartitionCount:1    ReplicationFactor:3 Configs:segment.bytes=1073741824
        Topic: my-replication-topic Partition: 0    Leader: 2   Replicas: 1,2,0 Isr: 2,0
    

21. 使用kafka connect 导入导出数据

    souce connector 从text.txt读取文件 ，把内容发送到connect-test., sink connector 从conect-test读写消息

    [root@localhost kafka_2.12-2.2.1]# bin/connect-standalone.sh config/connect-standalone.properties config/connect-file-source.properties  config/connect-file-sink.properties 
    [2019-06-22 19:05:55,493] INFO Kafka Connect standalone worker initializing ... (org.apache.kafka.connect.cli.ConnectStandalone:67)
    

    进行jps分发现多了一个ConnectStandalone的进程

    [root@localhost ~]# jps
    4370 ConsoleProducer
    9478 Jps
    9160 ConnectStandalone
    2842 QuorumPeerMain
    3147 Kafka
    4955 ConsoleConsumer
    5948 Kafka
    

    显示文件内容

    more 命令类似 cat ，不过会以一页一页的形式显示，更方便使用者逐页阅读，

    [root@localhost kafka_2.12-2.2.1]# more test.sink.txt 
    foo
    bar
    

    使用消费者控制 台显示

    [root@localhost kafka_2.12-2.2.1]# bin/kafka-console-consumer.sh --bootstrap-server localhost:9092 --topic connect-test --from-beginning
    {"schema":{"type":"string","optional":false},"payload":"foo"}
    {"schema":{"type":"string","optional":false},"payload":"bar"}
    

    继续测试

    生产者进行消息追加

    [root@localhost kafka_2.12-2.2.1]# echo -e "foo\nbarddddaaa\aaaaa\dddd\1\2\2\3" > test.txt
    [root@localhost kafka_2.12-2.2.1]# echo -e "foo\nbarddddaaa\aaaaa\dddd\1\2\2\3\new append" > test.txt
    

    消费者进行实时显示

    [root@localhost kafka_2.12-2.2.1]# bin/kafka-console-consumer.sh --bootstrap-server localhost:9092 --topic connect-test --from-beginning
    {"schema":{"type":"string","optional":false},"payload":"foo"}
    {"schema":{"type":"string","optional":false},"payload":"bar"}
    {"schema":{"type":"string","optional":false},"payload":"dddd"}
    {"schema":{"type":"string","optional":false},"payload":"aaaaaaad"}
    {"schema":{"type":"string","optional":false},"payload":"dd"}
    ^[[A^[[A^[[B{"schema":{"type":"string","optional":false},"payload":"1\\2\\2\\3"}
    {"schema":{"type":"string","optional":false},"payload":"ew append"}