Flume基本操作
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Flume基本操作
1.把Telnet产生的内容写入到控制台显示
bin/flume-ng agent -c conf -n a1 -f conf/a1.conf -Dflume.root.logger=DEBUG,console
a.conf内容如下:
##### define agent name #### a1.sources = src1 a1.channels = channel1 a1.sinks = sink1 #### define source #### a1.sources.src1.type = netcat a1.sources.src1.bind = haoguan-HP-Compaq-Pro-6380-MT a1.sources.src1.port = 44444 #### define channel #### a1.channels.channel1.type = memory a1.channels.channel1.capacity = 1000 a1.channels.channel1.transactionCapacity = 100 #### define sink #### a1.sinks.sink1.type = logger a1.sinks.sink1.maxBytesToLog = 1024 #### bind the source and sink to the channel a1.sources.src1.channels = channel1 a1.sinks.sink1.channel = channel1
2.把hive中产生的log写入到hdfs
bin/flume-ng agent -c conf -n a2 -f conf/flume-hive.conf -Dflume.root.logger=DEBUG,console
flume-hive.conf内容如下:
##### define agent name #### a2.sources = src2 a2.channels = channel2 a2.sinks = sink2 #### define source #### a2.sources.src2.type = exec a2.sources.src2.command = tail -f /opt/modules/cdh/hive-0.13.1-cdh5.3.6/log/hive.log a2.sources.src2.shell = /bin/bash -c #### define channel #### a2.channels.channel2.type = memory a2.channels.channel2.capacity = 1000 a2.channels.channel2.transactionCapacity = 100 #### define sink #### a2.sinks.sink2.type = hdfs a2.sinks.sink2.hdfs.path = hdfs://haoguan-HP-Compaq-Pro-6380-MT:9000/flume_hive_log/%Y%m%d #可以指定时间戳作为分区目录 a2.sinks.sink2.hdfs.filePrefix = events- a2.sinks.sink2.hdfs.fileType = DataStream a2.sinks.sink2.hdfs.writeFormat = Text a2.sinks.sink2.hdfs.batchSize = 10 a2.sinks.sink2.hdfs.rollInterval = 30 #设置flush间隔,30秒flush一次,无论有没到达rollSize大小 a2.sinks.sink2.hdfs.rollSize = 10240 #设置文件大小(byte),到指定大小flush一次,无论有没到达rollInterval间隔 a2.sinks.sink2.hdfs.rollCount = 0 #rollCount必须设置成0,不然会影响rollInterval,rollSize的设置 a2.sinks.sink2.hdfs.idleTimeout=0 a2.sinks.sink2.hdfs.useLocalTimeStamp = true #使用时间戳作为分区必须设置useLocalTimeStamp为true #### bind the source and sink to the channel a2.sources.src2.channels = channel2 a2.sinks.sink2.channel = channel2
如果是HA架构需要把HA的core-site.xml与hdfs-site.xml放入到/opt/modules/cdh/flume-1.5.0-cdh5.3.6/conf中
a2.sinks.sink2.hdfs.path = hdfs://haoguan-HP-Compaq-Pro-6380-MT:9000/flume_hive_log
换成
a2.sinks.sink2.hdfs.path = hdfs://ns1/flume_hive_log
3. spooldir方式抽取文件到hdfs中
bin/flume-ng agent -c conf -n a3 -f conf/flume-app.conf -Dflume.root.logger=DEBUG,console
flume-app.conf内容如下:
##### define agent name #### a3.sources = src3 a3.channels = channel3 a3.sinks = sink3 #### define source #### a3.sources.src3.type = spooldir a3.sources.src3.spoolDir = /opt/modules/cdh/flume-1.5.0-cdh5.3.6/spoollogs #指定被抽取的文件夹 a3.sources.src3.ignorePattern = ^.*\.log$ #过滤被抽取文件夹中指定的文件 a3.sources.src3.fileSuffix = _COMP #文件抽取完成以后更改后缀 #### define channel #### a3.channels.channel3.type = file a3.channels.channel3.checkpointDir = /opt/modules/cdh/flume-1.5.0-cdh5.3.6/filechannel/checkpoint a3.channels.channel3.dataDirs = /opt/modules/cdh/flume-1.5.0-cdh5.3.6/filechannel/data a3.channels.channel3.capacity = 1000 a3.channels.channel3.transactionCapacity = 100 #### define sink #### a3.sinks.sink3.type = hdfs a3.sinks.sink3.hdfs.path = hdfs://haoguan-HP-Compaq-Pro-6380-MT:9000/flume_app_log a3.sinks.sink3.hdfs.filePrefix = events- a3.sinks.sink3.hdfs.fileType = DataStream a3.sinks.sink3.hdfs.writeFormat = Text a3.sinks.sink3.hdfs.batchSize = 10 a3.sinks.sink3.hdfs.rollInterval = 30 a3.sinks.sink3.hdfs.rollSize = 10240 a3.sinks.sink3.hdfs.rollCount = 0 a3.sinks.sink3.hdfs.idleTimeout=0 #a3.sinks.sink3.hdfs.useLocalTimeStamp = true #### bind the source and sink to the channel a3.sources.src3.channels = channel3 a3.sinks.sink3.channel = channel3
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