前言
本节内容我们完成Flume数据采集的一个多路复用案例,使用三台服务器,一台服务器负责采集本地日志数据,通过使用Replicating ChannelSelector选择器,将采集到的数据分发到另外俩台服务器,一台服务器将数据存储到hdfs,另外一台服务器将数据存储在本机,使用Avro的方式完成flume之间采集数据的传输。整体架构如下:
正文
①在hadoop101服务器的/opt/module/apache-flume-1.9.0/job目录下创建job-file-flume-avro.conf配置文件,用于监控hive日志并传输到avro sink
- job-file-flume-avro.conf配置文件
# Name the components on this agent a1.sources = r1 a1.sinks = k1 k2 a1.channels = c1 c2 # 将数据流复制给所有 channel a1.sources.r1.selector.type = replicating # Describe/configure the source a1.sources.r1.type = exec a1.sources.r1.command = tail -F /tmp/hadoop/hive.log a1.sources.r1.shell = /bin/bash -c # Describe the sink # sink 端的 avro 是一个数据发送者 a1.sinks.k1.type = avro a1.sinks.k1.hostname = hadoop102 a1.sinks.k1.port = 4141 a1.sinks.k2.type = avro a1.sinks.k2.hostname = hadoop103 a1.sinks.k2.port = 4142 # Describe the channel a1.channels.c1.type = memory a1.channels.c1.capacity = 1000 a1.channels.c1.transactionCapacity = 100 a1.channels.c2.type = memory a1.channels.c2.capacity = 1000 a1.channels.c2.transactionCapacity = 100 # Bind the source and sink to the channel a1.sources.r1.channels = c1 c2 a1.sinks.k1.channel = c1 a1.sinks.k2.channel = c2
②在hadoop102服务器的/opt/module/apache-flume-1.9.0/job目录下创建job-avro-flume-hdfs.conf配置文件,将监控数据传输到hadoop的hdfs系统
- job-avro-flume-hdfs.conf配置文件
# Name the components on this agent a2.sources = r1 a2.sinks = k1 a2.channels = c1 # Describe/configure the source # source 端的 avro 是一个数据接收服务 a2.sources.r1.type = avro a2.sources.r1.bind = hadoop102 a2.sources.r1.port = 4141 # Describe the sink a2.sinks.k1.type = hdfs a2.sinks.k1.hdfs.path = hdfs://hadoop101:8020/flume2/%Y%m%d/%H #上传文件的前缀 a2.sinks.k1.hdfs.filePrefix = flume2- #是否按照时间滚动文件夹 a2.sinks.k1.hdfs.round = true #多少时间单位创建一个新的文件夹 a2.sinks.k1.hdfs.roundValue = 1 #重新定义时间单位 a2.sinks.k1.hdfs.roundUnit = hour #是否使用本地时间戳 a2.sinks.k1.hdfs.useLocalTimeStamp = true #积攒多少个 Event 才 flush 到 HDFS 一次 a2.sinks.k1.hdfs.batchSize = 100 #设置文件类型,可支持压缩 a2.sinks.k1.hdfs.fileType = DataStream #多久生成一个新的文件 a2.sinks.k1.hdfs.rollInterval = 30 #设置每个文件的滚动大小大概是 128M a2.sinks.k1.hdfs.rollSize = 134217700 #文件的滚动与 Event 数量无关 a2.sinks.k1.hdfs.rollCount = 0 # Describe the channel a2.channels.c1.type = memory a2.channels.c1.capacity = 1000 a2.channels.c1.transactionCapacity = 100 # Bind the source and sink to the channel a2.sources.r1.channels = c1 a2.sinks.k1.channel = c1
③在hadoop103服务器的/opt/module/apache-flume-1.9.0/job目录下创建job-avro-flume-dir.conf配置文件,将监控数据传输到/opt/module/apache-flume-1.9.0/flume3目录下
- job-avro-flume-dir.conf配置文件
# Name the components on this agent a3.sources = r1 a3.sinks = k1 a3.channels = c2 # Describe/configure the source a3.sources.r1.type = avro a3.sources.r1.bind = hadoop103 a3.sources.r1.port = 4142 # Describe the sink a3.sinks.k1.type = file_roll a3.sinks.k1.sink.directory = /opt/module/apache-flume-1.9.0/flume3 # Describe the channel a3.channels.c2.type = memory a3.channels.c2.capacity = 1000 a3.channels.c2.transactionCapacity = 100 # Bind the source and sink to the channel a3.sources.r1.channels = c2 a3.sinks.k1.channel = c2
- 创建数据存储目录/opt/module/apache-flume-1.9.0/flume3
④启动hadoop集群
⑤启动hadoop102上的flume任务job-avro-flume-hdfs.conf
- 命令:
bin/flume-ng agent -c conf/ -n a2 -f job/job-avro-flume-hdfs.conf -Dflume.root.logger=INFO,console
⑥启动hadoop103上的flume任务job-avro-flume-dir.conf
- 命令:
bin/flume-ng agent -c conf/ -n a3 -f job/job-avro-flume-dir.conf -Dflume.root.logger=INFO,console
⑦启动hadoop101上的flume任务job-file-flume-avro.conf
- 命令:
bin/flume-ng agent -c conf/ -n a1 -f job/job-file-flume-avro.conf -Dflume.root.logger=INFO,console
⑧启动hive
⑨查看监控结果
- 查看hdfs
- 查看存储目录/opt/module/apache-flume-1.9.0/flume3下的文件
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结语
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