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正文apache
1、单一代理流配置
1.1 官网介绍
http://flume.apache.org/FlumeUserGuide.html#avro-source缓存
经过一个通道未来源和接收器连接。须要列出源,接收器和通道,为给定的代理,而后指向源和接收器及通道。一个源的实例能够指定多个通道,但只能指定一个接收器实例。格式以下:服务器
实例解析:一个代理名为agent_foo,外部经过avro客户端,而且发送数据经过内存通道给hdfs。在配置文件foo.config的可能看起来像这样:app
案例说明:这将使事件流从avro-appserver-src-1到hdfs-sink-1经过内存通道mem-channel-1。当代理开始foo.config做为其配置文件,它会实例化流。curl
配置单个组件tcp
定义流以后,须要设置每一个源,接收器和通道的属性。能够分别设定组件的属性值。ide
“type”属性必须为每一个组件设置,以了解它须要什么样的对象。每一个源,接收器和通道类型有其本身的一套,它所需的性能,以实现预期的功能。全部这些,必须根据须要设置。在前面的例子中,从hdfs-sink-1中的流到HDFS,经过内存通道mem-channel-1的avro-appserver-src-1源。下面是 一个例子,显示了这些组件的配置。oop
1.2 测试示例(一)
经过flume来监控一个目录,当目录中有新文件时,将文件内容输出到控制台。
#配置一个agent,agent的名称能够自定义(如a1)
#指定agent的sources(如s1)、sinks(如k1)、channels(如c1)
#分别指定agent的sources,sinks,channels的名称 名称能够自定义
a1.sources = s1
a1.sinks = k1
a1.channels = c1
#描述source
#配置目录scource
a1.sources.s1.type =spooldir
a1.sources.s1.spoolDir =/home/hadoop/logs
a1.sources.s1.fileHeader= true
a1.sources.s1.channels =c1
#配置sink
a1.sinks.k1.type = logger
a1.sinks.k1.channel = c1
#配置channel(内存作缓存)
a1.channels.c1.type = memory
启动命令
[hadoop@hadoop1 ~]$ flume-ng agent --conf conf --conf-file /home/hadoop/apps/flume/examples/case_spool.properties --name a1 -Dflume.root.logger=INFO,console
将123.log移动到logs目录
运行结果
1.3 测试案例(二)
案例2:实时模拟从web服务器中读取数据到hdfs中
此处使用exec source详细参考http://www.cnblogs.com/qingyunzong/p/8995554.html
里面的2.3Exec Source介绍
2、单代理多流配置
单个Flume代理能够包含几个独立的流。你能够在一个配置文件中列出多个源,接收器和通道。这些组件能够链接造成多个流。
能够链接源和接收器到其相应的通道,设置两个不一样的流。例如,若是须要设置一个agent_foo代理两个流,一个从外部Avro客户端到HDFS,另一个是tail的输出到Avro接收器,而后在这里是作一个配置
2.1 官方案例
3、配置多代理流程
设置一个多层的流,须要有一个指向下一跳avro源的第一跳的avro 接收器。这将致使第一Flume代理转发事件到下一个Flume代理。例如,若是按期发送的文件,每一个事件(1文件)AVRO客户端使用本地Flume 代理,那么这个当地的代理能够转发到另外一个有存储的代理。
配置以下
3.1 官方案例
这里链接从weblog-agent的avro-forward-sink 到hdfs-agent的avro-collection-source收集源。最终结果从外部源的appserver最终存储在HDFS的事件。
3.2 测试案例
case_avro.properties
a1.sources = s1
a1.sinks = k1
a1.channels = c1
a1.sources.s1.type = avro a1.sources.s1.channels = c1 a1.sources.s1.bind = 192.168.123.102 a1.sources.s1.port = 22222
a1.channels.c1.type = memory
a1.channels.c1.capacity = 1000
a1.channels.c1.transactionCapacity = 100
a1.sinks.k1.type = logger
a1.sinks.k1.channel = c1
case_avro_sink.properties
a2.sources = s1
a2.sinks = k1
a2.channels = c1
a2.sources.s1.type = syslogtcp
a2.sources.s1.channels = c1
a2.sources.s1.host = 192.168.123.102
a2.sources.s1.port = 33333
a2.channels.c1.type = memory
a2.channels.c1.capacity = 1000
a2.channels.c1.transactionCapacity = 100
a2.sinks.k1.type = avro a2.sinks.k1.hostname = 192.168.123.102 a2.sinks.k1.port = 22222 a2.sinks.k1.channel = c1
说明:case_avro_sink.properties是前面的Agent,case_avro.properties是后面的Agent
#先启动Avro的Source,监听端口
[hadoop@hadoop1 ~]$ flume-ng agent --conf conf --conf-file ~/apps/flume/examples/case_avro.properties --name a1 -Dflume.root.logger=DEBUG,console -Dorg.apache.flume.log.printconfig=true -Dorg.apache.flume.log.rawdata=true
#再启动Avro的Sink
flume-ng agent --conf conf --conf-file ~/apps/flume/examples/case_avro_sink.properties --name a2 -Dflume.root.logger=DEBUG,console -Dorg.apache.flume.log.printconfig=true -Dorg.apache.flume.log.rawdata=true
能够看到已经创建链接
#在Avro Sink上生成测试log
[hadoop@hadoop1 ~]$ echo "hello flume avro sink" | nc 192.168.123.102 33333
查看其它结果
4、多路复用流
Flume支持扇出流从一个源到多个通道。有两种模式的扇出,复制和复用。在复制流的事件被发送到全部的配置通道。在复用的状况下,事件被发送到合格的渠 道只有一个子集。扇出流,须要指定源和扇出通道的规则。这是经过添加一个通道“选择”,能够复制或复用。再进一步指定选择的规则,若是它是一个多路。若是你 不指定一个选择,则默认状况下它复制。
复用的选择集的属性进一步分叉。这须要指定一个事件属性映射到一组通道。选择配置属性中的每一个事件头检查。若是指定的值相匹配,那么该事件被发送到全部的通道映射到该值。若是没有匹配,那么该事件被发送到设置为默认配置的通道。
映射容许每一个值通道能够重叠。默认值能够包含任意数量的通道。下面的示例中有一个单一的流复用两条路径。代理有一个单一的avro源和链接道两个接收器的两个通道。
4.1 官方案例
“State”做为Header的选择检查。若是值是“CA”,而后将其发送到mem-channel-1,若是它的“AZ”的,那么jdbc- channel-2,若是它的“NY”那么发到这两个。若是“State”头未设置或不匹配的任何三个,而后去默认的mem-channel-1通道。
4.2 测试案例(一)复制
case_replicate_sink.properties
a1.sources = s1
a1.sinks = k1 k2
a1.channels = c1 c2
a1.sources.s1.type = syslogtcp
a1.sources.s1.channels = c1 c2
a1.sources.s1.host = 192.168.123.102
a1.sources.s1.port = 6666
a1.sources.s1.selector.type = replicating
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
a1.sinks.k1.type = avro
a1.sinks.k1.hostname = 192.168.123.102
a1.sinks.k1.port = 7777
a1.sinks.k1.channel = c1
a1.sinks.k1.type = avro
a1.sinks.k1.hostname = 192.168.123.102
a1.sinks.k1.port = 7777
a1.sinks.k1.channel = c2
case_replicate_s1.properties
a2.sources = s1
a2.sinks = k1
a2.channels = c1
a2.sources.s1.type = avro
a2.sources.s1.channels = c1
a2.sources.s1.host = 192.168.123.102
a2.sources.s1.port = 7777
a2.channels.c1.type = memory
a2.channels.c1.capacity = 1000
a2.channels.c1.transactionCapacity = 100
a2.sinks.k1.type = logger
a2.sinks.k1.channel = c1
case_replicate_s2.properties
a3.sources = s1
a3.sinks = k1
a3.channels = c1
a3.sources.s1.type = avro
a3.sources.s1.channels = c1
a3.sources.s1.host = 192.168.123.102
a3.sources.s1.port = 7777
a3.channels.c1.type = memory
a3.channels.c1.capacity = 1000
a3.channels.c1.transactionCapacity = 100
a3.sinks.k1.type = logger
a3.sinks.k1.channel = c1
#先启动Avro的Source,监听端口
flume-ng agent --conf conf --conf-file ~/apps/flume/examples/case_replicate_s1.properties --name a2 -Dflume.root.logger=DEBUG,console -Dorg.apache.flume.log.printconfig=true -Dorg.apache.flume.log.rawdata=true
flume-ng agent --conf conf --conf-file ~/apps/flume/examples/case_replicate_s2.properties --name a3 -Dflume.root.logger=DEBUG,console -Dorg.apache.flume.log.printconfig=true -Dorg.apache.flume.log.rawdata=true
#再启动Avro的Sink
flume-ng agent --conf conf --conf-file ~/apps/flume/examples/case_replicate_sink.properties --name a1 -Dflume.root.logger=DEBUG,console -Dorg.apache.flume.log.printconfig=true -Dorg.apache.flume.log.rawdata=true
#生成测试log
echo "hello via channel selector" | nc 192.168.123.102 6666
4.3 测试案例(二)复用
case_multi_sink.properties
#2个channel和2个sink的配置文件
a1.sources = r1
a1.sinks = k1 k2
a1.channels = c1 c2
# Describe/configure the source
a1.sources.r1.type = org.apache.flume.source.http.HTTPSource
a1.sources.r1.port = 5140
a1.sources.r1.host = 0.0.0.0
a1.sources.r1.selector.type = multiplexing
a1.sources.r1.channels = c1 c2
a1.sources.r1.selector.header = state
a1.sources.r1.selector.mapping.CZ = c1
a1.sources.r1.selector.mapping.US = c2
a1.sources.r1.selector.default = c1
# Describe the sink
a1.sinks.k1.type = avro
a1.sinks.k1.channel = c1
a1.sinks.k1.hostname = 172.25.4.23
a1.sinks.k1.port = 4545
a1.sinks.k2.type = avro
a1.sinks.k2.channel = c2
a1.sinks.k2.hostname = 172.25.4.33
a1.sinks.k2.port = 4545
# Use a channel which buffers events in memory
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
case_ multi _s1.properties
# Name the components on this agent
a2.sources = r1
a2.sinks = k1
a2.channels = c1
# Describe/configure the source
a2.sources.r1.type = avro
a2.sources.r1.channels = c1
a2.sources.r1.bind = 172.25.4.23
a2.sources.r1.port = 4545
# Describe the sink
a2.sinks.k1.type = logger
a2.sinks.k1.channel = c1
# Use a channel which buffers events in memory
a2.channels.c1.type = memory
a2.channels.c1.capacity = 1000
a2.channels.c1.transactionCapacity = 100
case_ multi _s2.properties
# 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.channels = c1
a3.sources.r1.bind = 172.25.4.33
a3.sources.r1.port = 4545
# Describe the sink
a3.sinks.k1.type = logger
a3.sinks.k1.channel = c1
# Use a channel which buffers events in memory
a3.channels.c1.type = memory
a3.channels.c1.capacity = 1000
a3.channels.c1.transactionCapacity = 100
#先启动Avro的Source,监听端口
flume-ng agent -c . -f case_ multi _s1.conf -n a2 -Dflume.root.logger=INFO,console
flume-ng agent -c . -f case_ multi _s2.conf -n a3 -Dflume.root.logger=INFO,console
#再启动Avro的Sink
flume-ng agent -c . -f case_multi_sink.conf -n a1-Dflume.root.logger=INFO,console
#根据配置文件生成测试的header 为state的POST请求
curl -X POST -d '[{ "headers" :{"state" : "CZ"},"body" : "TEST1"}]' http://localhost:5140
curl -X POST -d '[{ "headers" :{"state" : "US"},"body" : "TEST2"}]' http://localhost:5140
curl -X POST -d '[{ "headers" :{"state" : "SH"},"body" : "TEST3"}]' http://localhost:5140