小编给大家分享一下如何从指定的网络端口上采集日志到控制台输出和HDFS，希望大家阅读完这篇文章之后都有所收获，下面让我们一起去探讨吧！
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需求1：
从指定的网络端口上采集日志到控制台输出和HDFS
负载算法
故障转移：可以指定优先级，数字越大越优先
a1.sinkgroups.g1.processor.type = failover
a1.sinkgroups = g1
a1.sinkgroups.g1.sinks = k1 k2
a1.sinkgroups.g1.processor.type = failover
a1.sinkgroups.g1.processor.priority.k1 = 5
a1.sinkgroups.g1.processor.priority.k2 = 10
a1.sinkgroups.g1.processor.maxpenalty = 10000
全部轮询
a1.sinkgroups.g1.processor.type = load_balance
#从指定的网络端口上采集日志到控制台输出和HDFS
a1.sources = r1
a1.sinks = k1 k2
a1.channels = c1
# Describe/configure the source
a1.sources.r1.type = netcat
a1.sources.r1.bind = 0.0.0.0
a1.sources.r1.port = 44444
# Describe the sink
a1.sinkgroups = g1
a1.sinkgroups.g1.sinks = k1 k2
a1.sinkgroups.g1.processor.type = load_balance
a1.sinks.k1.type = logger
a1.sinks.k2.type = hdfs
a1.sinks.k2.hdfs.path = hdfs://192.168.0.129:9000/user/hadoop/flume
a1.sinks.k2.hdfs.batchSize = 10
a1.sinks.k2.hdfs.fileType = DataStream
a1.sinks.k2.hdfs.writeFormat = Text
# 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
a1.sinks.k2.channel = c1
检查logger输出：
2018-08-10 18:58:39,659 (lifecycleSupervisor-1-3) [INFO - org.apache.flume.source.NetcatSource.start(NetcatSource.java:169)] Created serverSocket:sun.nio.ch.ServerSocketChannelImpl[/0:0:0:0:0:0:0:0:44444]
2018-08-10 18:59:17,723 (SinkRunner-PollingRunner-LoadBalancingSinkProcessor) [INFO - org.apache.flume.sink.LoggerSink.process(LoggerSink.java:94)] Event: { headers:{} body: 7A 6F 75 72 63 20 6F 6B 0D zourc ok. }
2018-08-10 19:00:35,744 (SinkRunner-PollingRunner-LoadBalancingSinkProcessor) [INFO - org.apache.flume.sink.LoggerSink.process(LoggerSink.java:94)] Event: { headers:{} body: 61 73 64 66 0D asdf. }
2018-08-10 19:00:35,774 (SinkRunner-PollingRunner-LoadBalancingSinkProcessor) [INFO - org.apache.flume.sink.hdfs.HDFSDataStream.configure(HDFSDataStream.java:58)] Serializer = TEXT, UseRawLocalFileSystem = false
2018-08-10 19:00:36,086 (SinkRunner-PollingRunner-LoadBalancingSinkProcessor) [INFO - org.apache.flume.sink.hdfs.BucketWriter.open(BucketWriter.java:234)] Creating hdfs://192.168.0.129:9000/user/hadoop/flume/FlumeData.1533942035775.tmp检查hdfs输出：
[hadoop@hadoop001 flume]$ hdfs dfs -text hdfs://192.168.0.129:9000/user/hadoop/flume/*
18/08/10 19:14:23 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
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