用flume将Kafka数据同步到另一个kafka集群

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Flume官网地址： http://flume.apache.org/

文档查看地址： http://flume.apache.org/FlumeUserGuide.html

下载地址： http://archive.apache.org/dist/flume/

将下载的软件包上传解压

 # tar -zxvf /opt/soft/apache-flume-1.9.0-bin.tar.gz -C /opt/
 # ln -s /opt/apache-flume-1.9.0-bin /opt/flume

查看安装的版本

# cd /opt/flume/bin/
# flume-ng version
Flume 1.9.0
Source code repository: https://git-wip-us.apache.org/repos/asf/flume.git
Revision: d4fcab4f501d41597bc616921329a4339f73585e
Compiled by fszabo on Mon Dec 17 20:45:25 CET 2018
From source with checksum 35db629a3bda49d23e9b3690c80737f9

修改 conf 目录下的 log4j.properties 配置文件，配置日志文件路径

# vim conf/log4j.properties 
flume.log.dir=/data/flume/log

修改conf目录下的flume-env.sh，配置JAVA_HOME

# vim flume-env.sh
export JAVA_HOME=/opt/jdk

创建配置文件flume-conf-kafka.properties

a1.sources = r1
a1.sinks = k1
a1.channels = c1
# Describe/configure the source
a1.sources.r1.type = org.apache.flume.source.kafka.KafkaSource
a1.sources.r1.kafka.bootstrap.servers = 源端KAFKA:9092
a1.sources.r1.kafka.topics=kitchen
a1.sources.r1.kafka.groupId = flume
a1.sources.r1.kafka.consumer.timeout.ms = 100
# Describe the sink
a1.sinks.k1.type = org.apache.flume.sink.kafka.KafkaSink
a1.sinks.k1.kafka.bootstrap.servers=目端KAFKA:9092
a1.sinks.k1.kafka.topic=kitchen
#a1.sinks.k1.serializer.class=kafka.serializer.StringEncoder
a1.sinks.k1.kafka.producer.acks=1
a1.sinks.k1.custom.encoding=UTF-8
# Use a channel which buffers events in memory
a1.channels.c1.type = memory
a1.channels.c1.capacity = 1000
a1.channels.c1.transactionCapacity = 1000
# Bind the source and sink to the channel
a1.sources.r1.channels = c1
a1.sinks.k1.channel = c1

启动agent

/opt/flume/bin/flume-ng agent -n a1 -c /opt/flume/conf/ -f /opt/flume/conf/flume-conf-kafka.properties -Dflume.root.logger=INFO,console

看到Component type: SINK, name: k1 started 即为启动成功

2022-05-26 19:33:56,247 (lifecycleSupervisor-1-1) [INFO - org.apache.kafka.common.utils.AppInfoParser$AppInfo.<init>(AppInfoParser.java:109)] Kafka version : 2.0.1
2022-05-26 19:33:56,247 (lifecycleSupervisor-1-1) [INFO - org.apache.kafka.common.utils.AppInfoParser$AppInfo.<init>(AppInfoParser.java:110)] Kafka commitId : fa14705e51bd2ce5
2022-05-26 19:33:56,248 (lifecycleSupervisor-1-1) [INFO - org.apache.flume.instrumentation.MonitoredCounterGroup.register(MonitoredCounterGroup.java:119)] Monitored counter group for type: SINK, name: k1: Successfully registered new MBean.
2022-05-26 19:33:56,248 (lifecycleSupervisor-1-1) [INFO - org.apache.flume.instrumentation.MonitoredCounterGroup.start(MonitoredCounterGroup.java:95)] Component type: SINK, name: k1 started

#消费消息

# /opt/kafka/bin/kafka-console-consumer.sh --bootstrap-server kafka02:9092 --topic kitchen --from-beginning

#生产消息

/opt/kafka/bin/kafka-console-producer.sh --broker-list kafka01:9092 --topic init-test

查看flume日志，有新的Update信息

2022-05-26 19:35:09,295 (kafka-producer-network-thread | producer-1) [INFO - org.apache.kafka.clients.Metadata.update(Metadata.java:285)] Cluster ID: 5zfnXAaMT4iGG48TrmsiLQ

https://blog.csdn.net/huxili2020/article/details/120391578?spm=1001.2101.3001.6661.1&utm_medium=distribute.pc_relevant_t0.none-task-blog-2%7Edefault%7ECTRLIST%7ERate-1-120391578-blog-115274144.pc_relevant_antiscanv2&depth_1-utm_source=distribute.pc_relevant_t0.none-task-blog-2%7Edefault%7ECTRLIST%7ERate-1-120391578-blog-115274144.pc_relevant_antiscanv2&utm_relevant_index=1

https://blog.csdn.net/qq_47183158/article/details/112179052

2022-06-01 17:15:51,083 (SinkRunner-PollingRunner-DefaultSinkProcessor) [ERROR - org.apache.flume.SinkRunner$PollingRunner.run(SinkRunner.java:158)] Unable to deliver event. Exception follows.
org.apache.flume.EventDeliveryException: Failed to publish events
        at org.apache.flume.sink.kafka.KafkaSink.process(KafkaSink.java:268)
        at org.apache.flume.sink.DefaultSinkProcessor.process(DefaultSinkProcessor.java:67)
        at org.apache.flume.SinkRunner$PollingRunner.run(SinkRunner.java:145)
        at java.lang.Thread.run(Thread.java:745)
Caused by: java.util.concurrent.ExecutionException: org.apache.kafka.common.errors.TimeoutException: Expiring 1 record(s) for kitchen-2: 30001 ms has passed since batch creation plus linger time
        at org.apache.kafka.clients.producer.internals.FutureRecordMetadata.valueOrError(FutureRecordMetadata.java:94)
        at org.apache.kafka.clients.producer.internals.FutureRecordMetadata.get(FutureRecordMetadata.java:64)
        at org.apache.kafka.clients.producer.internals.FutureRecordMetadata.get(FutureRecordMetadata.java:29)
        at org.apache.flume.sink.kafka.KafkaSink.process(KafkaSink.java:244)
        ... 3 more
Caused by: org.apache.kafka.common.errors.TimeoutException: Expiring 1 record(s) for kitchen-2: 30001 ms has passed since batch creation plus linger time
2022-06-01 17:15:52,039 (kafka-producer-network-thread | producer-1) [WARN - org.apache.kafka.clients.NetworkClient.processDisconnection(NetworkClient.java:671)] [Producer clientId=producer-1] Connection to node 3 could not be established. Broker may not be availabl