大数据项目实战---电商埋点日志分析（第一部分，往hdfs中写入埋点日志的数据）

2023-11-03 15:30:10

https://www.bilibili.com/video/BV1L4411K7hW?p=31&spm_id_from=pageDriver

架构：

数据流
生产Flume读取日志文件做简单ETL后写入到kafka，然后消费Flume从kafka中将数据读出写入到hdfs。项目中还应用了zookeeper来协调的分布式kafka和分布式Hadoop。

步骤
1）制作埋点日志dummy文件

1.1）编写Java程序生成埋点日志文件，并Maven打包（期望完成时间2021-7-2，实际完成时间2021-7-3）

1.2）将打好的jar包传到66服务器和88服务器。
2）搭建Hadoop环境
安装Hadoop，并进行验证和调优。

   <Hadoop_Home>/etc/hadoop/hdfs-site.xml
    <Hadoop_Home>/etc/hadoop/core-site.xml
    <Hadoop_Home>/etc/hadoop/yarn-site.xml
    <Hadoop_Home>/etc/hadoop/mapred-site.xml
    <Hadoop_Home>/etc/hadoop/hadoop-env.sh
    <Hadoop_Home>/etc/hadoop/mapred-env.sh
    <Hadoop_Home>/etc/hadoop/yarn-env.sh
    <Hadoop_Home>/etc/hadoop/workers

    zkServer.sh start
    /home/user/hadoop-3.2.2/sbin/hadoop-daemon.sh start zkfc
    /home/user/hadoop-3.2.2/sbin/start-dfs.sh    
    /home/user/hadoop-3.2.2/sbin/start-yarn.sh

3）安装配置Flume。
安装Flume，并进行验证和调优。
4）配置生产Flume，从日志文件中读取数据，写入到kafka。
4.1）在66服务器上配置文件file-flume-kafka.conf如下，然后分发到88和99服务器。

[user@NewBieMaster ~]$ vi /home/user/flume-1.9/conf/file-flume-kafka.conf

　　 a1.source=r1
    a1.channels= c1 c2 
    #configure source
    a1.sources.r1.type=TAILDIR
    a1.sources.r1.positionFile=/home/user/flume-1.9/test/log_position_json
    a1.sources.r1.filegroups=f1
    a1.sources.r1.filegroups.f1=/tmp/debug.+
    a1.sources.r1.fileHeader = true
    a1.sources.channels = c1 c2
     
    #interceptor
    a1.sources.r1.interceptors= i1 i2
    a1.sources.r1.interceptors.i1.type=com.example.flume.interceptor.LogETLInterceptor$Builder
    a1.sources.r1.interceptors.i2.type=com.example.flume.interceptor.LogTypeInterceptor$Builder
    a1.sources.r1.selector.type=multiplexing
    a1.sources.r1.selector.header=topic
    a1.sources.r1.selector.mapping.topic_start=c1
    a1.sources.r1.selector.mapping.topic_event=c2
     
    #configure channel
    a1.channels.c1.type=org.apache.flume.channel.kafka.KafkaChannel
    a1.channels.c1.kafka.bootstrap.servers=192.168.1.66:9092,192.168.1.88:9092,192.168.1.99:9092
    a1.channels.c1.kafka.topic=topic_start
    a1.channels.c1.parseAsFlumeEvent = false
    a1.channels.c1.kafka.consumer.groupd.id=flume-consumer
     
    a1.channels.c2.type=org.apache.flume.channel.kafka.KafkaChannel
    a1.channels.c2.kafka.bootstrap.servers=192.168.1.66:9092,192.168.1.88:9092,192.168.1.99:9092
    a1.channels.c2.kafka.topic=topic_event
    a1.channels.c2.parseAsFlumeEvent = false
    a1.channels.c2.kafka.consumer.groupd.id=flume-consumer

4.2）创建Java Maven工程，制作拦截器com.example.flume.interceptor.LogETLInterceptor$Builder和com.example.flume.interceptor.LogTypeInterceptor$Builder。
5)安装kafka
安装Kafka，并进行验证和调优

6）在66服务器上启动flume agent，查看kafka队列

  ~/flume-1.9/bin/flume-ng agent --name a1 -con-file ./conf/file-flume-kafka.conf  -Dlume.root.logger=FINEST &
     
    kafka-topics.sh --zookeeper 192.168.1.66:2181,192.168.1.88:2181,192.168.1.99:2181 --list
    kafka-topics.sh --zookeeper 192.168.1.66:2181,192.168.1.88:2181,192.168.1.99:2181 --describe topic_start
    kafka-topics.sh --zookeeper 192.168.1.66:2181,192.168.1.88:2181,192.168.1.99:2181 --describe topic_event
     
    [user@NewBieMaster tmp]$ kafka-topics.sh --zookeeper 192.168.1.66:2181,192.168.1.88:2181,192.168.1.99:2181 --list
    __consumer_offsets
    test
    topic_event
    topic_start
    [user@NewBieMaster tmp]$

7）安装配置kafka manager，通过kafkamanager查看kafka

安装配置的步骤

8）配置消费Flume，从kafka中读取数据，写入到hdfs。

8.1）在99服务器上配置文件kafka-flume-hdfs.conf如下，然后分发到88和66服务器。

##组件
    a1.sources= r1 r2
    a1.channels = c1 c2
    a1.sinks = k1 k2
     
    ##source1
    a1.sources.r1.type=org.apache.flume.source.kafka.KafkaSource
    a1.sources.r1.batchSize = 500
    a1.sources.r1.batchDurationMillis = 200
    a1.sources.r1.kafka.bootstrap.servers=192.168.1.66:9092,192.168.1.88:9092,192.168.1.99:9092
    a1.sources.r1.kafka.topics=topic_start
     
    ##source2
    a1.sources.r2.type=org.apache.flume.source.kafka.KafkaSource
    a1.sources.r2.batchSize = 500
    a1.sources.r2.batchDurationMillis = 200
    a1.sources.r2.kafka.bootstrap.servers=192.168.1.66:9092,192.168.1.88:9092,192.168.1.99:9092
    a1.sources.r2.kafka.topics=topic_event
     
    ##channel1
    a1.channels.c1.type= file
    a1.channels.c1.checkpointDir=/tmp/flumecheckpoint/behavior1
    a1.channels.c1.dataDirs=/tmp/flumedata/behavior1
    a1.channels.c1.maxFileSize=2146435071
    a1.channels.c1.capacity=1000000
    a1.channels.c1.keep-alive=6
     
    ##channel2
    a1.channels.c2.type= file
    a1.channels.c2.checkpointDir=/tmp/flumecheckpoint/behavior2
    a1.channels.c2.dataDirs=/tmp/flumedata/behavior2
    a1.channels.c2.maxFileSize=2146435071
    a1.channels.c2.capacity=1000000
    a1.channels.c2.keep-alive=6
     
    ##sink1
    a1.sinks.k1.type=hdfs
    a1.sinks.k1.hdfs.path=/orginal/gmail/log/topic_start/%Y-%m-%d
    a1.sinks.k1.hdfs.filePrefix=logstart-
    a1.sinks.hdfs.round=true
    a1.sinks.hdfs.roundValue=10
    a1.sinks.hdfs.roundUnit=second
     
    ##sink2
    a1.sinks.k2.type=hdfs
    a1.sinks.k2.hdfs.path=/orginal/gmail/log/topic_event/%Y-%m-%d
    a1.sinks.k2.hdfs.filePrefix=logstart-
    a1.sinks.hdfs.round=true
    a1.sinks.hdfs.roundValue=10
    a1.sinks.hdfs.roundUnit=second
     
    ##不产生小文件
    a1.sinks.k1.hdfs.rollInterval=10
    a1.sinks.k1.hdfs.rollSize=134217728
    a1.sinks.k1.hdfs.rollCount=0
     
    a1.sinks.k2.hdfs.rollInterval=10
    a1.sinks.k2.hdfs.rollSize=134217728
    a1.sinks.k2.hdfs.rollCount=0
     
    ##控制数出文件是原生文件
    a1.sinks.k1.hdfs.fileType=CompressedStream
    a1.sinks.k2.hdfs.fileType=CompressedStream
    a1.sinks.k1.hdfs.codeC=lzop
    a1.sinks.k2.hdfs.codeC=lzop
     
    ##拼装
    a1.sources.r1.channels=c1
    a1.sinks.k1.channel=c1
     
    a1.sources.r2.channels=c2
    a1.sinks.k2.channel=c2

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