目录

聚合

1)案例需求:

2)需求分析 

3)实现步骤:

准备工作

创建 flume1-logger-flume.conf

创建 flume2-netcat-flume.conf

创建 flume3-flume-logger.conf

执行配置文件


聚合

1)案例需求:

  • hadoop12 上的 Flume-1 监控文件 /opt/module/group.log
  • hadoop13 上的 Flume-2 监控某个端口的数据流,
  • Flume-1 与 Flume-2 将数据发送给 hadoop14 上的 Flume-3Flume-3 将最终数据打印到控制台。

2)需求分析 

多数据源汇总案例

 

3)实现步骤:

  1. 准备工作
    • 分发 Flume

    • [lzl@hadoop12 module]$ xsync flume
      
      
      xsync 是集群同步文件脚本,也就是在一台服务器分发文件给其他台服务器,脚本内容如下:
      #!/bin/bash
      #1. 判断参数个数
      if [ $# -lt 1 ]
      then
        echo Not Enough Arguement!
        exit;
      fi
      #2. 遍历集群所有机器
      for host in hadoop12 hadoop13 hadoop14
      do
        echo ====================  $host  ====================
        #3. 遍历所有目录,挨个发送
        for file in $@
        do
          #4 判断文件是否存在
          if [ -e $file ]
          then
            #5. 获取父目录
            pdir=$(cd -P $(dirname $file); pwd)
            #6. 获取当前文件的名称
            fname=$(basename $file)
            ssh $host "mkdir -p $pdir"
            rsync -av $pdir/$fname $host:$pdir
          else
            echo $file does not exists!
          fi
        done
      done
    • hadoop12hadoop13 以及 hadoop14/opt/module/flume/job 目录下创建一个 group3 文件夹。

      [lzl@hadoop12 job]$ mkdir group3
      [lzl@hadoop13 job]$ mkdir group3
      [lzl@hadoop14 job]$ mkdir group3
  2. 创建 flume1-logger-flume.conf
    • 配置 Source 用于监控 /opt/module/group.log 文件,配置 Sink 输出数据到下一级 Flume。

      hadoop12 上编辑配置文件

      [lzl@hadoop12 group3]$ vim flume1-logger-flume.conf

      添加如下内容

      # Name the components on this agent
      a1.sources = r1
      a1.sinks = k1
      a1.channels = c1
      
      # Describe/configure the source
      a1.sources.r1.type = exec
      a1.sources.r1.command = tail -F /opt/module/group.log
      a1.sources.r1.shell = /bin/bash -c
      
      # Describe the sink
      a1.sinks.k1.type = avro
      a1.sinks.k1.hostname = hadoop14
      a1.sinks.k1.port = 4141
      
      # Describe the channel
      a1.channels.c1.type = memory
      a1.channels.c1.capacity = 1000
      a1.channels.c1.transactionCapacity = 100
      
      # Bind the source and sink to the channel
      a1.sources.r1.channels = c1
      a1.sinks.k1.channel = c1
  3. 创建 flume2-netcat-flume.conf
    • 配置 Source 监控端口 44444 数据流,配置 Sink 数据到下一级 Flume。

       

      hadoop13 上编辑配置文件

      [lzl@hadoop12 group3]$ vim flume2-netcat-flume.conf

      添加如下内容

      # Name the components on this agent
      a2.sources = r1
      a2.sinks = k1
      a2.channels = c1
      
      # Describe/configure the source
      a2.sources.r1.type = netcat
      a2.sources.r1.bind = hadoop13
      a2.sources.r1.port = 44444
      
      # Describe the sink
      a2.sinks.k1.type = avro
      a2.sinks.k1.hostname = hadoop14
      a2.sinks.k1.port = 4141
      
      # Use a channel which buffers events in memory
      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
  4. 创建 flume3-flume-logger.conf
    • 配置 source 用于接收 flume1flume2 发送过来的数据流,最终合并后 sink 到控制台。

      hadoop14 上编辑配置文件

      [lzl@hadoop14 group3]$ touch flume3-flume-logger.conf
      [lzl@hadoop14 group3]$ vim flume3-flume-logger.conf

      添加如下内容

      # Name the components on this agent
      a3.sources = r1
      a3.sinks = k1
      a3.channels = c1
      
      # Describe/configure the source
      a3.sources.r1.type = avro 
      a3.sources.r1.bind = hadoop14
      a3.sources.r1.port = 4141
      
      # Describe the sink
      a3.sinks.k1.type = logger
      
      # Describe the channel
      a3.channels.c1.type = memory
      a3.channels.c1.capacity = 1000
      a3.channels.c1.transactionCapacity = 100
      
      # Bind the source and sink to the channel
      a3.sources.r1.channels = c1
      a3.sinks.k1.channel = c1
  5. 执行配置文件
    • 分别开启对应配置文件:flume3-flume-logger.confflume2-netcat-flume.confflume1-logger-flume.conf

      [lzl@hadoop14 flume]$ bin/flume-ng agent --conf conf/ --name 
      a3 --conf-file job/group3/flume3-flume-logger.conf 
      -Dflume.root.logger=INFO,console
      [lzl@hadoop12 flume]$ bin/flume-ng agent --conf conf/ --name 
      a2 --conf-file job/group3/flume1-logger-flume.conf
      [lzl@hadoop13 flume]$ bin/flume-ng agent --conf conf/ --name 
      a1 --conf-file job/group3/flume2-netcat-flume.conf
  6. hadoop13 上向 /opt/module 目录下的 group.log 追加内容

    [lzl@hadoop13 module]$ echo 'hello' >> group.log
  7. hadoop12 上向 44444 端口发送数据

    [lzl@hadoop12 flume]$ telnet hadoop13 44444
  8. 检查 hadoop14 上数据

 

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