大數據教程(13.2)Flume多個agent鏈接

   上一節介紹了Flume如何將數據收集到hdfs文件系統上。本節將分享多個agent鏈接配合使用。node

   原理圖:apache

    操做步驟:centos

一、將centos-aaron-h1的flume複製一份到centos-aaron-h2
sudo scp  -r /home/hadoop/apps/apache-flume-1.6.0-bin hadoop@192.168.29.145:/home/hadoop/apps/


二、進入centos-aaron-h1的Flume配置目錄
cd ~/apps/apache-flume-1.6.0-bin/conf

三、新建配置文件
vi tail-avro-avro-logger.conf

四、在上面的配置文件中添加一下內容

#從tail命令獲取數據發送到avro端口
#另外一個節點可配置一個avro源來中繼數據,發送外部存儲
##################
# 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 /home/hadoop/log/test.log
a1.sources.r1.channels = c1

# Describe the sink
#綁定的不是本機, 是另一臺機器的服務地址, sink端的avro是一個發送端, avro的客戶端, 往hadoop01這個機器上發
a1.sinks = k1
a1.sinks.k1.type = avro
a1.sinks.k1.channel = c1
a1.sinks.k1.hostname = master
a1.sinks.k1.port = 4141
a1.sinks.k1.batch-size = 2



# Use a channel which buffers events in memory
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

五、保存上面配置
shift+Z+Z

六、建立Flume監聽的文件所在的文件夾
mkdir /home/hadoop/log

七、創Flume監聽的文件,並寫循環寫入數據
while true
do
echo 111111 >> /home/hadoop/log/test.log
sleep 0.5
done

八、新打開個ssh客戶端執行下列命令查看日誌文件變化【使用大寫的-F是追蹤文件名進行輸出,而小寫-f是inode進行追蹤】
tail -F test.log


九、進入centos-aaron-h2的Flume配置目錄
cd ~/apps/apache-flume-1.6.0-bin/conf

十、新建配置文件
vi avro-hdfs.conf

十一、在上面的配置文件中添加一下內容

#從avro端口接收數據,下沉到logger
# Name the components on this agent
a1.sources = r1
a1.sinks = k1
a1.channels = c1

# Describe/configure the source
#source中的avro組件是接收者服務, 綁定本機
a1.sources.r1.type = avro
a1.sources.r1.channels = c1
a1.sources.r1.bind = 0.0.0.0
a1.sources.r1.port = 4141

# Describe the sink
a1.sinks.k1.type = logger

# Use a channel which buffers events in memory
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

十二、在centos-aaron-h2啓動flume avro服務
bin/flume-ng agent -c conf -f conf/avro-hdfs.conf -n a1 -Dflume.root.logger=INFO,console

13.在centos-aaron-h1啓動flume avro客戶端
bin/flume-ng agent -c conf -f conf/tail-avro-avro-logger.conf -n a1

 效果圖:app

  注意點: Flume若是失敗了,必需要重啓agent進程,它會自動記錄上次採集的位置,繼續採集。你們能夠經過寫一個監聽腳原本實現重啓。最後你們能夠參考下《基於Flume的美團日誌收集系統》。ssh

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