Flume环境部署和配置详解及案例大全
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2022-05-20 23:10:28
一、什么是flume?
flume 作为 cloudera 开发的实时日志收集系统，受到了业界的认可与广泛应用。flume 初始的发行版本目前被统称为 f...
一、什么是flume?
flume 作为 cloudera 开发的实时日志收集系统，受到了业界的认可与广泛应用。flume 初始的发行版本目前被统称为 flume og（original generation），属于 cloudera。但随着 flume 功能的扩展，flume og 代码工程臃肿、核心组件设计不合理、核心配置不标准等缺点暴露出来，尤其是在 flume og 的最后一个发行版本 0.94.0 中，日志传输不稳定的现象尤为严重，为了解决这些问题，2011 年 10 月 22 号，cloudera 完成了 flume-728，对 flume 进行了里程碑式的改动：重构核心组件、核心配置以及代码架构，重构后的版本统称为 flume ng（next generation）；改动的另一原因是将 flume 纳入 apache 旗下，cloudera flume 改名为 apache flume。
flume的特点：
flume是一个分布式、可靠、和高可用的海量日志采集、聚合和传输的系统。支持在日志系统中定制各类数据发送方，用于收集数据;同时，flume提供对数据进行简单处理，并写到各种数据接受方(比如文本、hdfs、hbase等)的能力 。
flume的数据流由事件(event)贯穿始终。事件是flume的基本数据单位，它携带日志数据(字节数组形式)并且携带有头信息，这些event由agent外部的source生成，当source捕获事件后会进行特定的格式化，然后source会把事件推入(单个或多个)channel中。你可以把channel看作是一个缓冲区，它将保存事件直到sink处理完该事件。sink负责持久化日志或者把事件推向另一个source。
flume的可靠性
当节点出现故障时，日志能够被传送到其他节点上而不会丢失。flume提供了三种级别的可靠性保障，从强到弱依次分别为：end-to-end（收到数据agent首先将event写到磁盘上，当数据传送成功后，再删除；如果数据发送失败，可以重新发送。），store on failure（这也是scribe采用的策略，当数据接收方crash时，将数据写到本地，待恢复后，继续发送），besteffort（数据发送到接收方后，不会进行确认）。
flume的可恢复性：
还是靠channel。推荐使用filechannel，事件持久化在本地文件系统里(性能较差)。
flume的一些核心概念：
agent使用jvm 运行flume。每台机器运行一个agent，但是可以在一个agent中包含多个sources和sinks。
client生产数据，运行在一个独立的线程。
source从client收集数据，传递给channel。
sink从channel收集数据，运行在一个独立线程。
channel连接 sources 和 sinks ，这个有点像一个队列。
events可以是日志记录、 avro 对象等。
flume以agent为最小的独立运行单位。一个agent就是一个jvm。单agent由source、sink和channel三大组件构成，如下图：
值得注意的是，flume提供了大量内置的source、channel和sink类型。不同类型的source,channel和sink可以*组合。组合方式基于用户设置的配置文件，非常灵活。比如：channel可以把事件暂存在内存里，也可以持久化到本地硬盘上。sink可以把日志写入hdfs, hbase，甚至是另外一个source等等。flume支持用户建立多级流，也就是说，多个agent可以协同工作，并且支持fan-in、fan-out、contextual routing、backup routes，这也正是nb之处。如下图所示:
二、flume的官方网站在哪里？
三、在哪里下载？
四、如何安装？
1)将下载的flume包，解压到/home/hadoop目录中，你就已经完成了50%：）简单吧
2)修改 flume-env.sh 配置文件,主要是java_home变量设置
root@m1:/home/hadoop/flume-1.5.0-bin# cp conf/flume-env.sh.template conf/flume-env.sh root@m1:/home/hadoop/flume-1.5.0-bin# vi conf/flume-env.sh # licensed to the apache software foundation (asf) under one # or more contributor license agreements. see the notice file # distributed with this work for additional information # regarding copyright ownership. the asf licenses this file # to you under the apache license, version 2.0 (the # "license"); you may not use this file except in compliance # with the license. you may obtain a copy of the license at # # http://www.apache.org/licenses/license-2.0 # # unless required by applicable law or agreed to in writing, software # distributed under the license is distributed on an "as is" basis, # without warranties or conditions of any kind, either express or implied. # see the license for the specific language governing permissions and # limitations under the license. # if this file is placed at flume_conf_dir/flume-env.sh, it will be sourced # during flume startup. # enviroment variables can be set here. java_home=/usr/lib/jvm/java-7-oracle # give flume more memory and pre-allocate, enable remote monitoring via jmx #java_opts="-xms100m -xmx200m -dcom.sun.management.jmxremote" # note that the flume conf directory is always included in the classpath. #flume_classpath=""
3)验证是否安装成功
root@m1:/home/hadoop# /home/hadoop/flume-1.5.0-bin/bin/flume-ng version flume 1.5.0 source code repository: https://git-wip-us.apache.org/repos/asf/flume.git revision: 8633220df808c4cd0c13d1cf0320454a94f1ea97 compiled by hshreedharan on wed may 7 14:49:18 pdt 2014 from source with checksum a01fe726e4380ba0c9f7a7d222db961f root@m1:/home/hadoop#
出现上面的信息，表示安装成功了
五、flume的案例
1)案例1：avro
avro可以发送一个给定的文件给flume，avro 源使用avro rpc机制。
a)创建agent配置文件
root@m1:/home/hadoop#vi /home/hadoop/flume-1.5.0-bin/conf/avro.conf a1.sources = r1 a1.sinks = k1 a1.channels = c1 # describe/configure the source 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
b)启动flume agent a1
root@m1:/home/hadoop# /home/hadoop/flume-1.5.0-bin/bin/flume-ng agent -c . -f /home/hadoop/flume-1.5.0-bin/conf/avro.conf -n a1 -dflume.root.logger=info,console
c)创建指定文件
root@m1:/home/hadoop# echo "hello world" > /home/hadoop/flume-1.5.0-bin/log.00
d)使用avro-client发送文件
root@m1:/home/hadoop# /home/hadoop/flume-1.5.0-bin/bin/flume-ng avro-client -c . -h m1 -p 4141 -f /home/hadoop/flume-1.5.0-bin/log.00
f)在m1的控制台，可以看到以下信息，注意最后一行：
root@m1:/home/hadoop/flume-1.5.0-bin/conf# /home/hadoop/flume-1.5.0-bin/bin/flume-ng agent -c . -f /home/hadoop/flume-1.5.0-bin/conf/avro.conf -n a1 -dflume.root.logger=info,console
info: sourcing environment configuration script /home/hadoop/flume-1.5.0-bin/conf/flume-env.sh
info: including hadoop libraries found via (/home/hadoop/hadoop-2.2.0/bin/hadoop) for hdfs access
info: excluding /home/hadoop/hadoop-2.2.0/share/hadoop/common/lib/slf4j-api-1.7.5.jar from classpath
info: excluding /home/hadoop/hadoop-2.2.0/share/hadoop/common/lib/slf4j-log4j12-1.7.5.jar from classpath
...
-08-10 10:43:25,112 (new i/o worker #1) [info - org.apache.avro.ipc.nettyserver$nettyserveravrohandler.handleupstream(nettyserver.java:171)] [id: 0x92464c4f, /192.168.1.50:59850 :> /192.168.1.50:4141] unbound
-08-10 10:43:25,112 (new i/o worker #1) [info - org.apache.avro.ipc.nettyserver$nettyserveravrohandler.handleupstream(nettyserver.java:171)] [id: 0x92464c4f, /192.168.1.50:59850 :> /192.168.1.50:4141] closed
-08-10 10:43:25,112 (new i/o worker #1) [info - org.apache.avro.ipc.nettyserver$nettyserveravrohandler.channelclosed(nettyserver.java:209)] connection to /192.168.1.50:59850 disconnected.
-08-10 10:43:26,718 (sinkrunner-pollingrunner-defaultsinkprocessor) [info - org.apache.flume.sink.loggersink.process(loggersink.java:70)] event: { headers:{} body: 68 65 6c 6c 6f 20 77 6f 72 6c 64 hello world }
2)案例2：spool
spool监测配置的目录下新增的文件，并将文件中的数据读取出来。需要注意两点：
1) 拷贝到spool目录下的文件不可以再打开编辑。
2) spool目录下不可包含相应的子目录
a)创建agent配置文件
root@m1:/home/hadoop# vi /home/hadoop/flume-1.5.0-bin/conf/spool.conf a1.sources = r1 a1.sinks = k1 a1.channels = c1 # describe/configure the source a1.sources.r1.type = spooldir a1.sources.r1.channels = c1 a1.sources.r1.spooldir = /home/hadoop/flume-1.5.0-bin/logs a1.sources.r1.fileheader = true # 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
b)启动flume agent a1
root@m1:/home/hadoop# /home/hadoop/flume-1.5.0-bin/bin/flume-ng agent -c . -f /home/hadoop/flume-1.5.0-bin/conf/spool.conf -n a1 -dflume.root.logger=info,console
c)追加文件到/home/hadoop/flume-1.5.0-bin/logs目录
root@m1:/home/hadoop# echo "spool test1" > /home/hadoop/flume-1.5.0-bin/logs/spool_text.log
d)在m1的控制台，可以看到以下相关信息：
/08/10 11:37:13 info source.spooldirectorysource: spooling directory source runner has shutdown.
/08/10 11:37:13 info source.spooldirectorysource: spooling directory source runner has shutdown.
/08/10 11:37:14 info avro.reliablespoolingfileeventreader: preparing to move file /home/hadoop/flume-1.5.0-bin/logs/spool_text.log to /home/hadoop/flume-1.5.0-bin/logs/spool_text.log.completed
/08/10 11:37:14 info source.spooldirectorysource: spooling directory source runner has shutdown.
/08/10 11:37:14 info source.spooldirectorysource: spooling directory source runner has shutdown.
/08/10 11:37:14 info sink.loggersink: event: { headers:{file=/home/hadoop/flume-1.5.0-bin/logs/spool_text.log} body: 73 70 6f 6f 6c 20 74 65 73 74 31 spool test1 }
/08/10 11:37:15 info source.spooldirectorysource: spooling directory source runner has shutdown.
/08/10 11:37:15 info source.spooldirectorysource: spooling directory source runner has shutdown.
/08/10 11:37:16 info source.spooldirectorysource: spooling directory source runner has shutdown.
/08/10 11:37:16 info source.spooldirectorysource: spooling directory source runner has shutdown.
/08/10 11:37:17 info source.spooldirectorysource: spooling directory source runner has shutdown.
3)案例3：exec
exec执行一个给定的命令获得输出的源,如果要使用tail命令，必选使得file足够大才能看到输出内容
a)创建agent配置文件
root@m1:/home/hadoop# vi /home/hadoop/flume-1.5.0-bin/conf/exec_tail.conf a1.sources = r1 a1.sinks = k1 a1.channels = c1 # describe/configure the source a1.sources.r1.type = exec a1.sources.r1.channels = c1 a1.sources.r1.command = tail -f /home/hadoop/flume-1.5.0-bin/log_exec_tail # 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
b)启动flume agent a1
root@m1:/home/hadoop# /home/hadoop/flume-1.5.0-bin/bin/flume-ng agent -c . -f /home/hadoop/flume-1.5.0-bin/conf/exec_tail.conf -n a1 -dflume.root.logger=info,console
c)生成足够多的内容在文件里
root@m1:/home/hadoop# for i in {1..100};do echo "exec tail$i" >> /home/hadoop/flume-1.5.0-bin/log_exec_tail;echo $i;sleep 0.1;done
e)在m1的控制台，可以看到以下信息：
-08-10 10:59:25,513 (sinkrunner-pollingrunner-defaultsinkprocessor) [info - org.apache.flume.sink.loggersink.process(loggersink.java:70)] event: { headers:{} body: 65 78 65 63 20 74 61 69 6c 20 74 65 73 74 exec tail test }
-08-10 10:59:34,535 (sinkrunner-pollingrunner-defaultsinkprocessor) [info - org.apache.flume.sink.loggersink.process(loggersink.java:70)] event: { headers:{} body: 65 78 65 63 20 74 61 69 6c 20 74 65 73 74 exec tail test }
-08-10 11:01:40,557 (sinkrunner-pollingrunner-defaultsinkprocessor) [info - org.apache.flume.sink.loggersink.process(loggersink.java:70)] event: { headers:{} body: 65 78 65 63 20 74 61 69 6c 31 exec tail1 }
-08-10 11:01:41,180 (sinkrunner-pollingrunner-defaultsinkprocessor) [info - org.apache.flume.sink.loggersink.process(loggersink.java:70)] event: { headers:{} body: 65 78 65 63 20 74 61 69 6c 32 exec tail2 }
-08-10 11:01:41,180 (sinkrunner-pollingrunner-defaultsinkprocessor) [info - org.apache.flume.sink.loggersink.process(loggersink.java:70)] event: { headers:{} body: 65 78 65 63 20 74 61 69 6c 33 exec tail3 }
-08-10 11:01:41,181 (sinkrunner-pollingrunner-defaultsinkprocessor) [info - org.apache.flume.sink.loggersink.process(loggersink.java:70)] event: { headers:{} body: 65 78 65 63 20 74 61 69 6c 34 exec tail4 }
-08-10 11:01:41,181 (sinkrunner-pollingrunner-defaultsinkprocessor) [info - org.apache.flume.sink.loggersink.process(loggersink.java:70)] event: { headers:{} body: 65 78 65 63 20 74 61 69 6c 35 exec tail5 }
-08-10 11:01:41,181 (sinkrunner-pollingrunner-defaultsinkprocessor) [info - org.apache.flume.sink.loggersink.process(loggersink.java:70)] event: { headers:{} body: 65 78 65 63 20 74 61 69 6c 36 exec tail6 }
....
....
....
-08-10 11:01:51,550 (sinkrunner-pollingrunner-defaultsinkprocessor) [info - org.apache.flume.sink.loggersink.process(loggersink.java:70)] event: { headers:{} body: 65 78 65 63 20 74 61 69 6c 39 36 exec tail96 }
-08-10 11:01:51,550 (sinkrunner-pollingrunner-defaultsinkprocessor) [info - org.apache.flume.sink.loggersink.process(loggersink.java:70)] event: { headers:{} body: 65 78 65 63 20 74 61 69 6c 39 37 exec tail97 }
-08-10 11:01:51,551 (sinkrunner-pollingrunner-defaultsinkprocessor) [info - org.apache.flume.sink.loggersink.process(loggersink.java:70)] event: { headers:{} body: 65 78 65 63 20 74 61 69 6c 39 38 exec tail98 }
-08-10 11:01:51,551 (sinkrunner-pollingrunner-defaultsinkprocessor) [info - org.apache.flume.sink.loggersink.process(loggersink.java:70)] event: { headers:{} body: 65 78 65 63 20 74 61 69 6c 39 39 exec tail99 }
-08-10 11:01:51,551 (sinkrunner-pollingrunner-defaultsinkprocessor) [info - org.apache.flume.sink.loggersink.process(loggersink.java:70)] event: { headers:{} body: 65 78 65 63 20 74 61 69 6c 31 30 30 exec tail100 }
4)案例4：syslogtcp
syslogtcp监听tcp的端口做为数据源
a)创建agent配置文件
root@m1:/home/hadoop# vi /home/hadoop/flume-1.5.0-bin/conf/syslog_tcp.conf a1.sources = r1 a1.sinks = k1 a1.channels = c1 # describe/configure the source a1.sources.r1.type = syslogtcp a1.sources.r1.port = 5140 a1.sources.r1.host = localhost a1.sources.r1.channels = c1 # 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
b)启动flume agent a1
root@m1:/home/hadoop# /home/hadoop/flume-1.5.0-bin/bin/flume-ng agent -c . -f /home/hadoop/flume-1.5.0-bin/conf/syslog_tcp.conf -n a1 -dflume.root.logger=info,console
c)测试产生syslog
root@m1:/home/hadoop# echo "hello idoall.org syslog" | nc localhost 5140
d)在m1的控制台，可以看到以下信息：
/08/10 11:41:45 info node.pollingpropertiesfileconfigurationprovider: reloading configuration file:/home/hadoop/flume-1.5.0-bin/conf/syslog_tcp.conf
/08/10 11:41:45 info conf.flumeconfiguration: added sinks: k1 agent: a1
/08/10 11:41:45 info conf.flumeconfiguration: processing:k1
/08/10 11:41:45 info conf.flumeconfiguration: processing:k1
/08/10 11:41:45 info conf.flumeconfiguration: post-validation flume configuration contains configuration for agents: [a1]
/08/10 11:41:45 info node.abstractconfigurationprovider: creating channels
/08/10 11:41:45 info channel.defaultchannelfactory: creating instance of channel c1 type memory
/08/10 11:41:45 info node.abstractconfigurationprovider: created channel c1
/08/10 11:41:45 info source.defaultsourcefactory: creating instance of source r1, type syslogtcp
/08/10 11:41:45 info sink.defaultsinkfactory: creating instance of sink: k1, type: logger
/08/10 11:41:45 info node.abstractconfigurationprovider: channel c1 connected to [r1, k1]
/08/10 11:41:45 info node.application: starting new configuration:{ sourcerunners:{r1=eventdrivensourcerunner: { source:org.apache.flume.source.syslogtcpsource{name:r1,state:idle} }} sinkrunners:{k1=sinkrunner: { policy:org.apache.flume.sink.defaultsinkprocessor@6538b14 countergroup:{ name:null counters:{} } }} channels:{c1=org.apache.flume.channel.memorychannel{name: c1}} }
/08/10 11:41:45 info node.application: starting channel c1
/08/10 11:41:45 info instrumentation.monitoredcountergroup: monitored counter group for type: channel, name: c1: successfully registered new mbean.
/08/10 11:41:45 info instrumentation.monitoredcountergroup: component type: channel, name: c1 started
/08/10 11:41:45 info node.application: starting sink k1
/08/10 11:41:45 info node.application: starting source r1
/08/10 11:41:45 info source.syslogtcpsource: syslog tcp source starting...
/08/10 11:42:15 warn source.syslogutils: event created from invalid syslog data.
/08/10 11:42:15 info sink.loggersink: event: { headers:{severity=0, flume.syslog.status=invalid, facility=0} body: 68 65 6c 6c 6f 20 69 64 6f 61 6c 6c 2e 6f 72 67 hello idoall.org }
5)案例5：jsonhandler
a)创建agent配置文件
root@m1:/home/hadoop# vi /home/hadoop/flume-1.5.0-bin/conf/post_json.conf a1.sources = r1 a1.sinks = k1 a1.channels = c1 # describe/configure the source a1.sources.r1.type = org.apache.flume.source.http.httpsource a1.sources.r1.port = 8888 a1.sources.r1.channels = c1 # 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
b)启动flume agent a1
root@m1:/home/hadoop# /home/hadoop/flume-1.5.0-bin/bin/flume-ng agent -c . -f /home/hadoop/flume-1.5.0-bin/conf/post_json.conf -n a1 -dflume.root.logger=info,console
c)生成json 格式的post request
root@m1:/home/hadoop# curl -x post -d '[{ "headers" :{"a" : "a1","b" : "b1"},"body" : "idoall.org_body"}]' http://localhost:8888
d)在m1的控制台，可以看到以下信息：
/
08/10 11:49:59 info node.application: starting channel c1
/08/10 11:49:59 info instrumentation.monitoredcountergroup: monitored counter group for type: channel, name: c1: successfully registered new mbean.
/08/10 11:49:59 info instrumentation.monitoredcountergroup: component type: channel, name: c1 started
/08/10 11:49:59 info node.application: starting sink k1
/08/10 11:49:59 info node.application: starting source r1
/08/10 11:49:59 info mortbay.log: logging to org.slf4j.impl.log4jloggeradapter(org.mortbay.log) via org.mortbay.log.slf4jlog
/08/10 11:49:59 info mortbay.log: jetty-6.1.26
/08/10 11:50:00 info mortbay.log: started selectchannelconnector@0.0.0.0:8888
/08/10 11:50:00 info instrumentation.monitoredcountergroup: monitored counter group for type: source, name: r1: successfully registered new mbean.
/08/10 11:50:00 info instrumentation.monitoredcountergroup: component type: source, name: r1 started
/08/10 12:14:32 info sink.loggersink: event: { headers:{b=b1, a=a1} body: 69 64 6f 61 6c 6c 2e 6f 72 67 5f 62 6f 64 79 idoall.org_body }
6)案例6：hadoop sink
其中关于hadoop2.2.0部分的安装部署，请参考文章《ubuntu12.04+hadoop2.2.0+zookeeper3.4.5+hbase0.96.2+hive0.13.1分布式环境部署》
a)创建agent配置文件
root@m1:/home/hadoop# vi /home/hadoop/flume-1.5.0-bin/conf/hdfs_sink.conf a1.sources = r1 a1.sinks = k1 a1.channels = c1 # describe/configure the source a1.sources.r1.type = syslogtcp a1.sources.r1.port = 5140 a1.sources.r1.host = localhost a1.sources.r1.channels = c1 # describe the sink a1.sinks.k1.type = hdfs a1.sinks.k1.channel = c1 a1.sinks.k1.hdfs.path = hdfs://m1:9000/user/flume/syslogtcp a1.sinks.k1.hdfs.fileprefix = syslog a1.sinks.k1.hdfs.round = true a1.sinks.k1.hdfs.roundvalue = 10 a1.sinks.k1.hdfs.roundunit = minute # 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
b)启动flume agent a1
root@m1:/home/hadoop# /home/hadoop/flume-1.5.0-bin/bin/flume-ng agent -c . -f /home/hadoop/flume-1.5.0-bin/conf/hdfs_sink.conf -n a1 -dflume.root.logger=info,console
c)测试产生syslog
root@m1:/home/hadoop# echo "hello idoall flume -> hadoop testing one" | nc localhost 5140
d)在m1的控制台，可以看到以下信息：
/08/10 12:20:39 info instrumentation.monitoredcountergroup: monitored counter group for type: channel, name: c1: successfully registered new mbean. /08/10 12:20:39 info instrumentation.monitoredcountergroup: component type: channel, name: c1 started /08/10 12:20:39 info node.application: starting sink k1 /08/10 12:20:39 info node.application: starting source r1 /08/10 12:20:39 info instrumentation.monitoredcountergroup: monitored counter group for type: sink, name: k1: successfully registered new mbean. /08/10 12:20:39 info instrumentation.monitoredcountergroup: component type: sink, name: k1 started /08/10 12:20:39 info source.syslogtcpsource: syslog tcp source starting... /08/10 12:21:46 warn source.syslogutils: event created from invalid syslog data. /08/10 12:21:49 info hdfs.hdfssequencefile: writeformat = writable, userawlocalfilesystem = false /08/10 12:21:49 info hdfs.bucketwriter: creating hdfs://m1:9000/user/flume/syslogtcp//syslog.1407644509504.tmp /08/10 12:22:20 info hdfs.bucketwriter: closing hdfs://m1:9000/user/flume/syslogtcp//syslog.1407644509504.tmp /08/10 12:22:20 info hdfs.bucketwriter: close tries incremented /08/10 12:22:20 info hdfs.bucketwriter: renaming hdfs://m1:9000/user/flume/syslogtcp/syslog.1407644509504.tmp to hdfs://m1:9000/user/flume/syslogtcp/syslog.1407644509504 /08/10 12:22:20 info hdfs.hdfseventsink: writer callback called.
e)在m1上再打开一个窗口，去hadoop上检查文件是否生成
root@m1:/home/hadoop# /home/hadoop/hadoop-2.2.0/bin/hadoop fs -ls /user/flume/syslogtcp found 1 items -rw-r--r-- 3 root supergroup 155 2014-08-10 12:22 /user/flume/syslogtcp/syslog.1407644509504 root@m1:/home/hadoop# /home/hadoop/hadoop-2.2.0/bin/hadoop fs -cat /user/flume/syslogtcp/syslog.1407644509504 seq!org.apache.hadoop.io.longwritable"org.apache.hadoop.io.byteswritable^;>gv$hello idoall flume -> hadoop testing one
7)案例7：file roll sink
a)创建agent配置文件
root@m1:/home/hadoop# vi /home/hadoop/flume-1.5.0-bin/conf/file_roll.conf a1.sources = r1 a1.sinks = k1 a1.channels = c1 # describe/configure the source a1.sources.r1.type = syslogtcp a1.sources.r1.port = 5555 a1.sources.r1.host = localhost a1.sources.r1.channels = c1 # describe the sink a1.sinks.k1.type = file_roll a1.sinks.k1.sink.directory = /home/hadoop/flume-1.5.0-bin/logs # 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
b)启动flume agent a1
root@m1:/home/hadoop# /home/hadoop/flume-1.5.0-bin/bin/flume-ng agent -c . -f /home/hadoop/flume-1.5.0-bin/conf/file_roll.conf -n a1 -dflume.root.logger=info,console
c)测试产生log
root@m1:/home/hadoop# echo "hello idoall.org syslog" | nc localhost 5555 root@m1:/home/hadoop# echo "hello idoall.org syslog 2" | nc localhost 5555
d)查看/home/hadoop/flume-1.5.0-bin/logs下是否生成文件,默认每30秒生成一个新文件
root@m1:/home/hadoop# ll /home/hadoop/flume-1.5.0-bin/logs 总用量 272 drwxr-xr-x 3 root root 4096 aug 10 12:50 ./ drwxr-xr-x 9 root root 4096 aug 10 10:59 ../ -rw-r--r-- 1 root root 50 aug 10 12:49 1407646164782-1 -rw-r--r-- 1 root root 0 aug 10 12:49 1407646164782-2 -rw-r--r-- 1 root root 0 aug 10 12:50 1407646164782-3 root@m1:/home/hadoop# cat /home/hadoop/flume-1.5.0-bin/logs/1407646164782-1 /home/hadoop/flume-1.5.0-bin/logs/1407646164782-2 hello idoall.org syslog hello idoall.org syslog 2
8)案例8：replicating channel selector
flume支持fan out流从一个源到多个通道。有两种模式的fan out，分别是复制和复用。在复制的情况下，流的事件被发送到所有的配置通道。在复用的情况下，事件被发送到可用的渠道中的一个子集。fan out流需要指定源和fan out通道的规则。
这次我们需要用到m1,m2两台机器
a)在m1创建replicating_channel_selector配置文件
root@m1:/home/hadoop# vi /home/hadoop/flume-1.5.0-bin/conf/replicating_channel_selector.conf a1.sources = r1 a1.sinks = k1 k2 a1.channels = c1 c2 # describe/configure the source a1.sources.r1.type = syslogtcp a1.sources.r1.port = 5140 a1.sources.r1.host = localhost a1.sources.r1.channels = c1 c2 a1.sources.r1.selector.type = replicating # describe the sink a1.sinks.k1.type = avro a1.sinks.k1.channel = c1 a1.sinks.k1.hostname = m1 a1.sinks.k1.port = 5555 a1.sinks.k2.type = avro a1.sinks.k2.channel = c2 a1.sinks.k2.hostname = m2 a1.sinks.k2.port = 5555 # 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
b)在m1创建replicating_channel_selector_avro配置文件
root@m1:/home/hadoop# vi /home/hadoop/flume-1.5.0-bin/conf/replicating_channel_selector_avro.conf a1.sources = r1 a1.sinks = k1 a1.channels = c1 # describe/configure the source a1.sources.r1.type = avro a1.sources.r1.channels = c1 a1.sources.r1.bind = 0.0.0.0 a1.sources.r1.port = 5555 # 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
c)在m1上将2个配置文件复制到m2上一份
root@m1:/home/hadoop/flume-1.5.0-bin# scp -r /home/hadoop/flume-1.5.0-bin/conf/replicating_channel_selector.conf root@m2:/home/hadoop/flume-1.5.0-bin/conf/replicating_channel_selector.conf root@m1:/home/hadoop/flume-1.5.0-bin# scp -r /home/hadoop/flume-1.5.0-bin/conf/replicating_channel_selector_avro.conf root@m2:/home/hadoop/flume-1.5.0-bin/conf/replicating_channel_selector_avro.conf<br>
d)打开4个窗口，在m1和m2上同时启动两个flume agent
root@m1:/home/hadoop# /home/hadoop/flume-1.5.0-bin/bin/flume-ng agent -c . -f /home/hadoop/flume-1.5.0-bin/conf/replicating_channel_selector_avro.conf -n a1 -dflume.root.logger=info,console root@m1:/home/hadoop# /home/hadoop/flume-1.5.0-bin/bin/flume-ng agent -c . -f /home/hadoop/flume-1.5.0-bin/conf/replicating_channel_selector.conf -n a1 -dflume.root.logger=info,console
e)然后在m1或m2的任意一台机器上，测试产生syslog
root@m1:/home/hadoop# echo "hello idoall.org syslog" | nc localhost 5140
f)在m1和m2的sink窗口，分别可以看到以下信息,这说明信息得到了同步：
/08/10 14:08:18 info ipc.nettyserver: connection to /192.168.1.51:46844 disconnected.
/08/10 14:08:52 info ipc.nettyserver: [id: 0x90f8fe1f, /192.168.1.50:35873 => /192.168.1.50:5555] open
/08/10 14:08:52 info ipc.nettyserver: [id: 0x90f8fe1f, /192.168.1.50:35873 => /192.168.1.50:5555] bound: /192.168.1.50:5555
/08/10 14:08:52 info ipc.nettyserver: [id: 0x90f8fe1f, /192.168.1.50:35873 => /192.168.1.50:5555] connected: /192.168.1.50:35873
/08/10 14:08:59 info ipc.nettyserver: [id: 0xd6318635, /192.168.1.51:46858 => /192.168.1.50:5555] open
/08/10 14:08:59 info ipc.nettyserver: [id: 0xd6318635, /192.168.1.51:46858 => /192.168.1.50:5555] bound: /192.168.1.50:5555
/08/10 14:08:59 info ipc.nettyserver: [id: 0xd6318635, /192.168.1.51:46858 => /192.168.1.50:5555] connected: /192.168.1.51:46858
/08/10 14:09:20 info sink.loggersink: event: { headers:{severity=0, flume.syslog.status=invalid, facility=0} body: 68 65 6c 6c 6f 20 69 64 6f 61 6c 6c 2e 6f 72 67 hello idoall.org }
9)案例9：multiplexing channel selector
a)在m1创建multiplexing_channel_selector配置文件
root@m1:/home/hadoop# vi /home/hadoop/flume-1.5.0-bin/conf/multiplexing_channel_selector.conf 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.channels = c1 c2 a1.sources.r1.selector.type = multiplexing a1.sources.r1.selector.header = type #映射允许每个值通道可以重叠。默认值可以包含任意数量的通道。 a1.sources.r1.selector.mapping.baidu = c1 a1.sources.r1.selector.mapping.ali = c2 a1.sources.r1.selector.default = c1 # describe the sink a1.sinks.k1.type = avro a1.sinks.k1.channel = c1 a1.sinks.k1.hostname = m1 a1.sinks.k1.port = 5555 a1.sinks.k2.type = avro a1.sinks.k2.channel = c2 a1.sinks.k2.hostname = m2 a1.sinks.k2.port = 5555 # 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
b)在m1创建multiplexing_channel_selector_avro配置文件
root@m1:/home/hadoop# vi /home/hadoop/flume-1.5.0-bin/conf/multiplexing_channel_selector_avro.conf a1.sources = r1 a1.sinks = k1 a1.channels = c1 # describe/configure the source a1.sources.r1.type = avro a1.sources.r1.channels = c1 a1.sources.r1.bind = 0.0.0.0 a1.sources.r1.port = 5555 # 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
c)将2个配置文件复制到m2上一份
root@m1:/home/hadoop/flume-1.5.0-bin# scp -r /home/hadoop/flume-1.5.0-bin/conf/multiplexing_channel_selector.conf root@m2:/home/hadoop/flume-1.5.0-bin/conf/multiplexing_channel_selector.conf root@m1:/home/hadoop/flume-1.5.0-bin# scp -r /home/hadoop/flume-1.5.0-bin/conf/multiplexing_channel_selector_avro.conf root@m2:/home/hadoop/flume-1.5.0-bin/conf/multiplexing_channel_selector_avro.conf
d)打开4个窗口，在m1和m2上同时启动两个flume agent
root@m1:/home/hadoop# /home/hadoop/flume-1.5.0-bin/bin/flume-ng agent -c . -f /home/hadoop/flume-1.5.0-bin/conf/multiplexing_channel_selector_avro.conf -n a1 -dflume.root.logger=info,console root@m1:/home/hadoop# /home/hadoop/flume-1.5.0-bin/bin/flume-ng agent -c . -f /home/hadoop/flume-1.5.0-bin/conf/multiplexing_channel_selector.conf -n a1 -dflume.root.logger=info,console
e)然后在m1或m2的任意一台机器上，测试产生syslog
root@m1:/home/hadoop# curl -x post -d '[{ "headers" :{"type" : "baidu"},"body" : "idoall_test1"}]' http://localhost:5140 && curl -x post -d '[{ "headers" :{"type" : "ali"},"body" : "idoall_test2"}]' http://localhost:5140 && curl -x post -d '[{ "headers" :{"type" : "qq"},"body" : "idoall_test3"}]' http://localhost:5140
f)在m1的sink窗口，可以看到以下信息：
14/08/10 14:32:21 info node.application: starting sink k1
14/08/10 14:32:21 info node.application: starting source r1
14/08/10 14:32:21 info source.avrosource: starting avro source r1: { bindaddress: 0.0.0.0, port: 5555 }...
14/08/10 14:32:21 info instrumentation.monitoredcountergroup: monitored counter group for type: source, name: r1: successfully registered new mbean.
14/08/10 14:32:21 info instrumentation.monitoredcountergroup: component type: source, name: r1 started
14/08/10 14:32:21 info source.avrosource: avro source r1 started.
14/08/10 14:32:36 info ipc.nettyserver: [id: 0xcf00eea6, /192.168.1.50:35916 => /192.168.1.50:5555] open
14/08/10 14:32:36 info ipc.nettyserver: [id: 0xcf00eea6, /192.168.1.50:35916 => /192.168.1.50:5555] bound: /192.168.1.50:5555
14/08/10 14:32:36 info ipc.nettyserver: [id: 0xcf00eea6, /192.168.1.50:35916 => /192.168.1.50:5555] connected: /192.168.1.50:35916
14/08/10 14:32:44 info ipc.nettyserver: [id: 0x432f5468, /192.168.1.51:46945 => /192.168.1.50:5555] open
14/08/10 14:32:44 info ipc.nettyserver: [id: 0x432f5468, /192.168.1.51:46945 => /192.168.1.50:5555] bound: /192.168.1.50:5555
14/08/10 14:32:44 info ipc.nettyserver: [id: 0x432f5468, /192.168.1.51:46945 => /192.168.1.50:5555] connected: /192.168.1.51:46945
14/08/10 14:34:11 info sink.loggersink: event: { headers:{type=baidu} body: 69 64 6f 61 6c 6c 5f 54 45 53 54 31 idoall_test1 }
14/08/10 14:34:57 info sink.loggersink: event: { headers:{type=qq} body: 69 64 6f 61 6c 6c 5f 54 45 53 54 33 idoall_test3 }
g)在m2的sink窗口，可以看到以下信息：
14/08/10 14:32:27 info node.application: starting sink k1
14/08/10 14:32:27 info node.application: starting source r1
14/08/10 14:32:27 info source.avrosource: starting avro source r1: { bindaddress: 0.0.0.0, port: 5555 }...
14/08/10 14:32:27 info instrumentation.monitoredcountergroup: monitored counter group for type: source, name: r1: successfully registered new mbean.
14/08/10 14:32:27 info instrumentation.monitoredcountergroup: component type: source, name: r1 started
14/08/10 14:32:27 info source.avrosource: avro source r1 started.
14/08/10 14:32:36 info ipc.nettyserver: [id: 0x7c2f0aec, /192.168.1.50:38104 => /192.168.1.51:5555] open
14/08/10 14:32:36 info ipc.nettyserver: [id: 0x7c2f0aec, /192.168.1.50:38104 => /192.168.1.51:5555] bound: /192.168.1.51:5555
14/08/10 14:32:36 info ipc.nettyserver: [id: 0x7c2f0aec, /192.168.1.50:38104 => /192.168.1.51:5555] connected: /192.168.1.50:38104
14/08/10 14:32:44 info ipc.nettyserver: [id: 0x3d36f553, /192.168.1.51:48599 => /192.168.1.51:5555] open
14/08/10 14:32:44 info ipc.nettyserver: [id: 0x3d36f553, /192.168.1.51:48599 => /192.168.1.51:5555] bound: /192.168.1.51:5555
14/08/10 14:32:44 info ipc.nettyserver: [id: 0x3d36f553, /192.168.1.51:48599 => /192.168.1.51:5555] connected: /192.168.1.51:48599
14/08/10 14:34:33 info sink.loggersink: event: { headers:{type=ali} body: 69 64 6f 61 6c 6c 5f 54 45 53 54 32 idoall_test2 }
可以看到，根据header中不同的条件分布到不同的channel上
10)案例10：flume sink processors
failover的机器是一直发送给其中一个sink，当这个sink不可用的时候，自动发送到下一个sink。
a)在m1创建flume_sink_processors配置文件
root@m1:/home/hadoop# vi /home/hadoop/flume-1.5.0-bin/conf/flume_sink_processors.conf a1.sources = r1 a1.sinks = k1 k2 a1.channels = c1 c2 #这个是配置failover的关键，需要有一个sink group a1.sinkgroups = g1 a1.sinkgroups.g1.sinks = k1 k2 #处理的类型是failover a1.sinkgroups.g1.processor.type = failover #优先级，数字越大优先级越高，每个sink的优先级必须不相同 a1.sinkgroups.g1.processor.priority.k1 = 5 a1.sinkgroups.g1.processor.priority.k2 = 10 #设置为10秒，当然可以根据你的实际状况更改成更快或者很慢 a1.sinkgroups.g1.processor.maxpenalty = 10000 # describe/configure the source a1.sources.r1.type = syslogtcp a1.sources.r1.port = 5140 a1.sources.r1.channels = c1 c2 a1.sources.r1.selector.type = replicating # describe the sink a1.sinks.k1.type = avro a1.sinks.k1.channel = c1 a1.sinks.k1.hostname = m1 a1.sinks.k1.port = 5555 a1.sinks.k2.type = avro a1.sinks.k2.channel = c2 a1.sinks.k2.hostname = m2 a1.sinks.k2.port = 5555 # 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
b)在m1创建flume_sink_processors_avro配置文件
root@m1:/home/hadoop# vi /home/hadoop/flume-1.5.0-bin/conf/flume_sink_processors_avro.conf a1.sources = r1 a1.sinks = k1 a1.channels = c1 # describe/configure the source a1.sources.r1.type = avro a1.sources.r1.channels = c1 a1.sources.r1.bind = 0.0.0.0 a1.sources.r1.port = 5555 # 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
c)将2个配置文件复制到m2上一份
root@m1:/home/hadoop/flume-1.5.0-bin# scp -r /home/hadoop/flume-1.5.0-bin/conf/flume_sink_processors.conf root@m2:/home/hadoop/flume-1.5.0-bin/conf/flume_sink_processors.conf root@m1:/home/hadoop/flume-1.5.0-bin# scp -r /home/hadoop/flume-1.5.0-bin/conf/flume_sink_processors_avro.conf root@m2:/home/hadoop/flume-1.5.0-bin/conf/flume_sink_processors_avro.conf
d)打开4个窗口，在m1和m2上同时启动两个flume agent
root@m1:/home/hadoop# /home/hadoop/flume-1.5.0-bin/bin/flume-ng agent -c . -f /home/hadoop/flume-1.5.0-bin/conf/flume_sink_processors_avro.conf -n a1 -dflume.root.logger=info,console root@m1:/home/hadoop# /home/hadoop/flume-1.5.0-bin/bin/flume-ng agent -c . -f /home/hadoop/flume-1.5.0-bin/conf/flume_sink_processors.conf -n a1 -dflume.root.logger=info,console
e)然后在m1或m2的任意一台机器上，测试产生log
root@m1:/home/hadoop# echo "idoall.org test1 failover" | nc localhost 5140
f)因为m2的优先级高，所以在m2的sink窗口，可以看到以下信息，而m1没有：
14/08/10 15:02:46 info ipc.nettyserver: connection to /192.168.1.51:48692 disconnected.
14/08/10 15:03:12 info ipc.nettyserver: [id: 0x09a14036, /192.168.1.51:48704 => /192.168.1.51:5555] open
14/08/10 15:03:12 info ipc.nettyserver: [id: 0x09a14036, /192.168.1.51:48704 => /192.168.1.51:5555] bound: /192.168.1.51:5555
14/08/10 15:03:12 info ipc.nettyserver: [id: 0x09a14036, /192.168.1.51:48704 => /192.168.1.51:5555] connected: /192.168.1.51:48704
14/08/10 15:03:26 info sink.loggersink: event: { headers:{severity=0, flume.syslog.status=invalid, facility=0} body: 69 64 6f 61 6c 6c 2e 6f 72 67 20 74 65 73 74 31 idoall.org test1 }
g)这时我们停止掉m2机器上的sink(ctrl+c)，再次输出测试数据：
root@m1:/home/hadoop# echo "idoall.org test2 failover" | nc localhost 5140
h)可以在m1的sink窗口，看到读取到了刚才发送的两条测试数据：
14/08/10 15:02:46 info ipc.nettyserver: connection to /192.168.1.51:47036 disconnected.
14/08/10 15:03:12 info ipc.nettyserver: [id: 0xbcf79851, /192.168.1.51:47048 => /192.168.1.50:5555] open
14/08/10 15:03:12 info ipc.nettyserver: [id: 0xbcf79851, /192.168.1.51:47048 => /192.168.1.50:5555] bound: /192.168.1.50:5555
14/08/10 15:03:12 info ipc.nettyserver: [id: 0xbcf79851, /192.168.1.51:47048 => /192.168.1.50:5555] connected: /192.168.1.51:47048
14/08/10 15:07:56 info sink.loggersink: event: { headers:{severity=0, flume.syslog.status=invalid, facility=0} body: 69 64 6f 61 6c 6c 2e 6f 72 67 20 74 65 73 74 31 idoall.org test1 }
14/08/10 15:07:56 info sink.loggersink: event: { headers:{severity=0, flume.syslog.status=invalid, facility=0} body: 69 64 6f 61 6c 6c 2e 6f 72 67 20 74 65 73 74 32 idoall.org test2 }
i)我们再在m2的sink窗口中，启动sink：
root@m1:/home/hadoop# /home/hadoop/flume-1.5.0-bin/bin/flume-ng agent -c . -f /home/hadoop/flume-1.5.0-bin/conf/flume_sink_processors_avro.conf -n a1 -dflume.root.logger=info,console
j)输入两批测试数据：
root@m1:/home/hadoop# echo "idoall.org test3 failover" | nc localhost 5140 && echo "idoall.org test4 failover" | nc localhost 5140
k)在m2的sink窗口，我们可以看到以下信息，因为优先级的关系，log消息会再次落到m2上：
14/08/10 15:09:47 info node.application: starting sink k1
14/08/10 15:09:47 info node.application: starting source r1
14/08/10 15:09:47 info source.avrosource: starting avro source r1: { bindaddress: 0.0.0.0, port: 5555 }...
14/08/10 15:09:47 info instrumentation.monitoredcountergroup: monitored counter group for type: source, name: r1: successfully registered new mbean.
14/08/10 15:09:47 info instrumentation.monitoredcountergroup: component type: source, name: r1 started
14/08/10 15:09:47 info source.avrosource: avro source r1 started.
14/08/10 15:09:54 info ipc.nettyserver: [id: 0x96615732, /192.168.1.51:48741 => /192.168.1.51:5555] open
14/08/10 15:09:54 info ipc.nettyserver: [id: 0x96615732, /192.168.1.51:48741 => /192.168.1.51:5555] bound: /192.168.1.51:5555
14/08/10 15:09:54 info ipc.nettyserver: [id: 0x96615732, /192.168.1.51:48741 => /192.168.1.51:5555] connected: /192.168.1.51:48741
14/08/10 15:09:57 info sink.loggersink: event: { headers:{severity=0, flume.syslog.status=invalid, facility=0} body: 69 64 6f 61 6c 6c 2e 6f 72 67 20 74 65 73 74 32 idoall.org test2 }
14/08/10 15:10:43 info ipc.nettyserver: [id: 0x12621f9a, /192.168.1.50:38166 => /192.168.1.51:5555] open
14/08/10 15:10:43 info ipc.nettyserver: [id: 0x12621f9a, /192.168.1.50:38166 => /192.168.1.51:5555] bound: /192.168.1.51:5555
14/08/10 15:10:43 info ipc.nettyserver: [id: 0x12621f9a, /192.168.1.50:38166 => /192.168.1.51:5555] connected: /192.168.1.50:38166
14/08/10 15:10:43 info sink.loggersink: event: { headers:{severity=0, flume.syslog.status=invalid, facility=0} body: 69 64 6f 61 6c 6c 2e 6f 72 67 20 74 65 73 74 33 idoall.org test3 }
14/08/10 15:10:43 info sink.loggersink: event: { headers:{severity=0, flume.syslog.status=invalid, facility=0} body: 69 64 6f 61 6c 6c 2e 6f 72 67 20 74 65 73 74 34 idoall.org test4 }
11)案例11：load balancing sink processor
load balance type和failover不同的地方是，load balance有两个配置，一个是轮询，一个是随机。两种情况下如果被选择的sink不可用，就会自动尝试发送到下一个可用的sink上面。
a)在m1创建load_balancing_sink_processors配置文件
root@m1:/home/hadoop# vi /home/hadoop/flume-1.5.0-bin/conf/load_balancing_sink_processors.conf a1.sources = r1 a1.sinks = k1 k2 a1.channels = c1 #这个是配置load balancing的关键，需要有一个sink group a1.sinkgroups = g1 a1.sinkgroups.g1.sinks = k1 k2 a1.sinkgroups.g1.processor.type = load_balance a1.sinkgroups.g1.processor.backoff = true a1.sinkgroups.g1.processor.selector = round_robin # describe/configure the source a1.sources.r1.type = syslogtcp a1.sources.r1.port = 5140 a1.sources.r1.channels = c1 # describe the sink a1.sinks.k1.type = avro a1.sinks.k1.channel = c1 a1.sinks.k1.hostname = m1 a1.sinks.k1.port = 5555 a1.sinks.k2.type = avro a1.sinks.k2.channel = c1 a1.sinks.k2.hostname = m2 a1.sinks.k2.port = 5555 # use a channel which buffers events in memory a1.channels.c1.type = memory a1.channels.c1.capacity = 1000 a1.channels.c1.transactioncapacity = 100
b)在m1创建load_balancing_sink_processors_avro配置文件
root@m1:/home/hadoop# vi /home/hadoop/flume-1.5.0-bin/conf/load_balancing_sink_processors_avro.conf a1.sources = r1 a1.sinks = k1 a1.channels = c1 # describe/configure the source a1.sources.r1.type = avro a1.sources.r1.channels = c1 a1.sources.r1.bind = 0.0.0.0 a1.sources.r1.port = 5555 # 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
c)将2个配置文件复制到m2上一份
root@m1:/home/hadoop/flume-1.5.0-bin# scp -r /home/hadoop/flume-1.5.0-bin/conf/load_balancing_sink_processors.conf root@m2:/home/hadoop/flume-1.5.0-bin/conf/load_balancing_sink_processors.conf root@m1:/home/hadoop/flume-1.5.0-bin# scp -r /home/hadoop/flume-1.5.0-bin/conf/load_balancing_sink_processors_avro.conf root@m2:/home/hadoop/flume-1.5.0-bin/conf/load_balancing_sink_processors_avro.conf
d)打开4个窗口，在m1和m2上同时启动两个flume agent
root@m1:/home/hadoop# /home/hadoop/flume-1.5.0-bin/bin/flume-ng agent -c . -f /home/hadoop/flume-1.5.0-bin/conf/load_balancing_sink_processors_avro.conf -n a1 -dflume.root.logger=info,console root@m1:/home/hadoop# /home/hadoop/flume-1.5.0-bin/bin/flume-ng agent -c . -f /home/hadoop/flume-1.5.0-bin/conf/load_balancing_sink_processors.conf -n a1 -dflume.root.logger=info,console
e)然后在m1或m2的任意一台机器上，测试产生log，一行一行输入，输入太快，容易落到一台机器上
root@m1:/home/hadoop# echo "idoall.org test1" | nc localhost 5140 root@m1:/home/hadoop# echo "idoall.org test2" | nc localhost 5140 root@m1:/home/hadoop# echo "idoall.org test3" | nc localhost 5140 root@m1:/home/hadoop# echo "idoall.org test4" | nc localhost 5140
f)在m1的sink窗口，可以看到以下信息：
14/08/10 15:35:29 info sink.loggersink: event: { headers:{severity=0, flume.syslog.status=invalid, facility=0} body: 69 64 6f 61 6c 6c 2e 6f 72 67 20 74 65 73 74 32 idoall.org test2 }
14/08/10 15:35:33 info sink.loggersink: event: { headers:{severity=0, flume.syslog.status=invalid, facility=0} body: 69 64 6f 61 6c 6c 2e 6f 72 67 20 74 65 73 74 34 idoall.org test4 }
g)在m2的sink窗口，可以看到以下信息：
14/08/10 15:35:27 info sink.loggersink: event: { headers:{severity=0, flume.syslog.status=invalid, facility=0} body: 69 64 6f 61 6c 6c 2e 6f 72 67 20 74 65 73 74 31 idoall.org test1 }
14/08/10 15:35:29 info sink.loggersink: event: { headers:{severity=0, flume.syslog.status=invalid, facility=0} body: 69 64 6f 61 6c 6c 2e 6f 72 67 20 74 65 73 74 33 idoall.org test3 }
说明轮询模式起到了作用。
12)案例12：hbase sink
a)在测试之前，请先参考《ubuntu12.04+hadoop2.2.0+zookeeper3.4.5+hbase0.96.2+hive0.13.1分布式环境部署》将hbase启动
b)然后将以下文件复制到flume中：
cp /home/hadoop/hbase-0.96.2-hadoop2/lib/protobuf-java-2.5.0.jar /home/hadoop/flume-1.5.0-bin/lib cp /home/hadoop/hbase-0.96.2-hadoop2/lib/hbase-client-0.96.2-hadoop2.jar /home/hadoop/flume-1.5.0-bin/lib cp /home/hadoop/hbase-0.96.2-hadoop2/lib/hbase-common-0.96.2-hadoop2.jar /home/hadoop/flume-1.5.0-bin/lib cp /home/hadoop/hbase-0.96.2-hadoop2/lib/hbase-protocol-0.96.2-hadoop2.jar /home/hadoop/flume-1.5.0-bin/lib cp /home/hadoop/hbase-0.96.2-hadoop2/lib/hbase-server-0.96.2-hadoop2.jar /home/hadoop/flume-1.5.0-bin/lib cp /home/hadoop/hbase-0.96.2-hadoop2/lib/hbase-hadoop2-compat-0.96.2-hadoop2.jar /home/hadoop/flume-1.5.0-bin/lib cp /home/hadoop/hbase-0.96.2-hadoop2/lib/hbase-hadoop-compat-0.96.2-hadoop2.jar /home/hadoop/flume-1.5.0-bin/lib@@@ cp /home/hadoop/hbase-0.96.2-hadoop2/lib/htrace-core-2.04.jar /home/hadoop/flume-1.5.0-bin/lib
c)确保test_idoall_org表在hbase中已经存在，test_idoall_org表的格式以及字段请参考《ubuntu12.04+hadoop2.2.0+zookeeper3.4.5+hbase0.96.2+hive0.13.1分布式环境部署》中关于hbase部分的建表代码。
d)在m1创建hbase_simple配置文件
root@m1:/home/hadoop# vi /home/hadoop/flume-1.5.0-bin/conf/hbase_simple.conf a1.sources = r1 a1.sinks = k1 a1.channels = c1 # describe/configure the source a1.sources.r1.type = syslogtcp a1.sources.r1.port = 5140 a1.sources.r1.host = localhost a1.sources.r1.channels = c1 # describe the sink a1.sinks.k1.type = logger a1.sinks.k1.type = hbase a1.sinks.k1.table = test_idoall_org a1.sinks.k1.columnfamily = name a1.sinks.k1.column = idoall a1.sinks.k1.serializer = org.apache.flume.sink.hbase.regexhbaseeventserializer a1.sinks.k1.channel = memorychannel # 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
e)启动flume agent
/home/hadoop/flume-1.5.0-bin/bin/flume-ng agent -c . -f /home/hadoop/flume-1.5.0-bin/conf/hbase_simple.conf -n a1 -dflume.root.logger=info,console
f)测试产生syslog
root@m1:/home/hadoop# echo "hello idoall.org from flume" | nc localhost 5140
g)这时登录到hbase中，可以发现新数据已经插入
root@m1:/home/hadoop# /home/hadoop/hbase-0.96.2-hadoop2/bin/hbase shell 2014-08-10 16:09:48,984 info [main] configuration.deprecation: hadoop.native.lib is deprecated. instead, use io.native.lib.available hbase shell; enter 'help<return>' for list of supported commands. type "exit<return>" to leave the hbase shell version 0.96.2-hadoop2, r1581096, mon mar 24 16:03:18 pdt 2014 hbase(main):001:0> list table slf4j: class path contains multiple slf4j bindings. slf4j: found binding in [jar:file:/home/hadoop/hbase-0.96.2-hadoop2/lib/slf4j-log4j12-1.6.4.jar!/org/slf4j/impl/staticloggerbinder.class] slf4j: found binding in [jar:file:/home/hadoop/hadoop-2.2.0/share/hadoop/common/lib/slf4j-log4j12-1.7.5.jar!/org/slf4j/impl/staticloggerbinder.class] slf4j: see http://www.slf4j.org/codes.html#multiple_bindings for an explanation. hbase2hive_idoall hive2hbase_idoall test_idoall_org 3 row(s) in 2.6880 seconds => ["hbase2hive_idoall", "hive2hbase_idoall", "test_idoall_org"] hbase(main):002:0> scan "test_idoall_org" row column+cell 10086 column=name:idoall, timestamp=1406424831473, value=idoallvalue 1 row(s) in 0.0550 seconds hbase(main):003:0> scan "test_idoall_org" row column+cell 10086 column=name:idoall, timestamp=1406424831473, value=idoallvalue 1407658495588-xbqcozrkk8-0 column=name:payload, timestamp=1407658498203, value=hello idoall.org from flume 2 row(s) in 0.0200 seconds hbase(main):004:0> quit
经过这么多flume的例子测试，如果你全部做完后，会发现flume的功能真的很强大，可以进行各种搭配来完成你想要的工作，俗话说师傅领进门，修行在个人，如何能够结合你的产品业务，将flume更好的应用起来，快去动手实践吧。
这篇文章做为一个笔记，希望能够对刚入门的同学起到帮助作用。
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