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可以自由组合。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？
http://www.apache.org/dyn/closer.cgi/flume/1.5.0/apache-flume-1.5.0-bin.tar.gz
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
<div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">root@m1:/home/hadoop/flume-1.5.0-bin# cp conf/flume-env.sh.template conf/flume-env.sh</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">root@m1:/home/hadoop/flume-1.5.0-bin# vi conf/flume-env.sh</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;"># or more contributor license agreements. See the NOTICE file</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;"># Licensed to the Apache Software Foundation (ASF) under one</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;"># distributed with this work for additional information</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;"># "License"); you may not use this file except in compliance</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;"># regarding copyright ownership. The ASF licenses this file</span></div># to you under the Apache License, Version 2.0 (the
<div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">#</span></div># with the License. You may obtain a copy of the License at
<div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;"># distributed under the License is distributed on an "AS IS" BASIS,</span></div># http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;"># Enviroment variables can be set here.</span></div># 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.
JAVA_HOME=/usr/lib/jvm/java-7-oracle
<div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">#FLUME_CLASSPATH=""</span></div># Give Flume more memory and pre-allocate, enable remote monitoring via JMX
#JAVA_OPTS="-Xms100m -Xmx200m -Dcom.sun.management.jmxremote"
<div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;"># Note that the Flume conf directory is always included in the classpath.</span></div>
3)验证是否安装成功
<div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">root@m1:/home/hadoop# /home/hadoop/flume-1.5.0-bin/bin/flume-ng version</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">Flume 1.5.0</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">Source code repository: https://git-wip-us.apache.org/repos/asf/flume.git</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">Revision: 8633220df808c4cd0c13d1cf0320454a94f1ea97</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">From sourcewith checksum a01fe726e4380ba0c9f7a7d222db961f</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">Compiled by hshreedharan on Wed May 7 14:49:18 PDT 2014</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">root@m1:/home/hadoop#</span></div>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
<div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">root@m1:/home/hadoop#vi /home/hadoop/flume-1.5.0-bin/conf/avro.conf</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;"> </span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">a1.sources = r1</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">a1.sinks = k1</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">a1.channels = c1</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;"> </span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">a1.sources.r1.channels = c1</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;"># Describe/configure the source</span></div>a1.sources.r1.type= avro
<div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;"># Use a channel which buffers events in memory</span></div>a1.sources.r1.bind = 0.0.0.0
a1.sources.r1.port = 4141
<div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">a1.sinks.k1.type= logger</span></div>
# Describe the sink
<div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;"># Bind the source and sink to the channel</span></div>a1.channels.c1.type= memory
a1.channels.c1.capacity = 1000
<div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">a1.channels.c1.transactionCapacity = 100</span></div>
a1.sources.r1.channels = c1
<div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">a1.sinks.k1.channel = c1</span></div>b)启动flume agent a1
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.00f)在m1的控制台，可以看到以下信息，注意最后一行：
<div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">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</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">Info: Sourcing environment configuration script/home/hadoop/flume-1.5.0-bin/conf/flume-env.sh</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">Info: Excluding /home/hadoop/hadoop-2.2.0/share/hadoop/common/lib/slf4j-api-1.7.5.jar from classpath</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">Info: Including Hadoop libraries found via (/home/hadoop/hadoop-2.2.0/bin/hadoop)for HDFS access</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">-08-10 10:43:25,112 (New I/Oworker #1) [INFO - org.apache.avro.ipc.NettyServer$NettyServerAvroHandler.handleUpstream(NettyServer.java:171)] [id: 0x92464c4f, /192.168.1.50:59850 :> /192.168.1.50:4141] UNBOUND</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">Info: Excluding /home/hadoop/hadoop-2.2.0/share/hadoop/common/lib/slf4j-log4j12-1.7.5.jar from classpath</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">...</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">-08-10 10:43:25,112 (New I/Oworker #1) [INFO - org.apache.avro.ipc.NettyServer$NettyServerAvroHandler.handleUpstream(NettyServer.java:171)] [id: 0x92464c4f, /192.168.1.50:59850 :> /192.168.1.50:4141] CLOSED</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">-08-10 10:43:25,112 (New I/Oworker #1) [INFO - org.apache.avro.ipc.NettyServer$NettyServerAvroHandler.channelClosed(NettyServer.java:209)] Connection to /192.168.1.50:59850 disconnected.</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">-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 }</span></div>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
<div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">root@m1:/home/hadoop# vi /home/hadoop/flume-1.5.0-bin/conf/spool.conf</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">a1.sources = r1</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">a1.sinks = k1</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">a1.channels = c1</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">a1.sources.r1.channels = c1</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;"># Describe/configure the source</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">a1.sources.r1.type= spooldir</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">a1.sources.r1.fileHeader =true</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">a1.sources.r1.spoolDir =/home/hadoop/flume-1.5.0-bin/logs</span></div># Describe the sink
a1.sinks.k1.type= logger
<div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">a1.channels.c1.transactionCapacity = 100</span></div># Use a channel which buffers events in memory
a1.channels.c1.type= memory
a1.channels.c1.capacity = 1000
# Bind the source and sink to the channel
<div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">a1.sinks.k1.channel = c1</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">a1.sources.r1.channels = c1</span></div>b)启动flume agent a1
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
<div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">root@m1:/home/hadoop# vi /home/hadoop/flume-1.5.0-bin/conf/exec_tail.conf</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">a1.sources = r1</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">a1.sinks = k1</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">a1.channels = c1</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">a1.sources.r1.channels = c1</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;"># Describe/configure the source</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">a1.sources.r1.type= exec</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;"># Describe the sink</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">a1.sources.r1.command= tail -F /home/hadoop/flume-1.5.0-bin/log_exec_tail</span></div>a1.sinks.k1.type= logger
<div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">a1.channels.c1.transactionCapacity = 100</span></div># Use a channel which buffers events in memory
a1.channels.c1.type= memory
a1.channels.c1.capacity = 1000
<div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">a1.sinks.k1.channel = c1</span></div># Bind the source and sink to the channel
<div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">a1.sources.r1.channels = c1</span></div>
b)启动flume agent a1
Syslogtcp监听TCP的端口做为数据源
a)创建agent配置文件
a)创建agent配置文件
<div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">root@m1:/home/hadoop# vi /home/hadoop/flume-1.5.0-bin/conf/post_json.conf</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">a1.sources = r1</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">a1.sinks = k1</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">a1.channels = c1</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">a1.sources.r1.type= org.apache.flume.source.http.HTTPSource</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;"># Describe/configure the source</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">a1.sources.r1.port = 8888</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;"># Use a channel which buffers events in memory</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">a1.sources.r1.channels = c1</span></div># Describe the sink
<div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">a1.channels.c1.transactionCapacity = 100</span></div>a1.sinks.k1.type= logger
a1.channels.c1.type= memory
<div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">a1.channels.c1.capacity = 1000</span></div># Bind the source and sink to the channel
<div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">a1.sinks.k1.channel = c1</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif;">a1.sources.r1.channels = c1</span></div>
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
/
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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 }
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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
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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
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b)启动flume agent a1
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root@m1:
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# /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
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c)测试产生syslog
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root@m1:
/home/hadoop
# echo "hello idoall flume -> hadoop testing one" | nc localhost 5140
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d)在m1的控制台，可以看到以下信息：
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/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: Creatinghdfs://m1:9000/user/flume/syslogtcp//Syslog.1407644509504.tmp
/08/10 12:22:20 INFO hdfs.BucketWriter: Closinghdfs://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: Renaminghdfs://m1:9000/user/flume/syslogtcp/Syslog.1407644509504.tmp tohdfs://m1:9000/user/flume/syslogtcp/Syslog.1407644509504
/08/10 12:22:20 INFO hdfs.HDFSEventSink: Writer callback called.
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e)在m1上再打开一个窗口，去hadoop上检查文件是否生成
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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
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7)案例7：File Roll Sink
a)创建agent配置文件
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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
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b)启动flume agent a1
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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
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c)测试产生log
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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
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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
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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
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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
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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
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b)在m1创建replicating_Channel_Selector_avro配置文件
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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
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c)在m1上将2个配置文件复制到m2上一份
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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>
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d)打开4个窗口，在m1和m2上同时启动两个flume agent
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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
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e)然后在m1或m2的任意一台机器上，测试产生syslog
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root@m1:
/home/hadoop
# echo "hello idoall.org syslog" | nc localhost 5140
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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：
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/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 }
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9)案例9：Multiplexing Channel Selector
a)在m1创建Multiplexing_Channel_Selector配置文件
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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
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b)在m1创建Multiplexing_Channel_Selector_avro配置文件
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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
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c)将2个配置文件复制到m2上一份
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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
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d)打开4个窗口，在m1和m2上同时启动两个flume agent
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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
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e)然后在m1或m2的任意一台机器上，测试产生syslog
|
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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
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f)在m1的sink窗口，可以看到以下信息：
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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 }
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g)在m2的sink窗口，可以看到以下信息：
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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 }
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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
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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
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b)在m1创建Flume_Sink_Processors_avro配置文件
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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
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c)将2个配置文件复制到m2上一份
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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
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d)打开4个窗口，在m1和m2上同时启动两个flume agent
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1
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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
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e)然后在m1或m2的任意一台机器上，测试产生log
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1
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root@m1:
/home/hadoop
# echo "idoall.org test1 failover" | nc localhost 5140
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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：
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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 }
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g)这时我们停止掉m2机器上的sink(ctrl+c)，再次输出测试数据：
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root@m1:
/home/hadoop
# echo "idoall.org test2 failover" | nc localhost 5140
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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：
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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 }
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i)我们再在m2的sink窗口中，启动sink：
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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：
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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：
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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 }
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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
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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
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b)在m1创建Load_balancing_Sink_Processors_avro配置文件
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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
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c)将2个配置文件复制到m2上一份
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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
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d)打开4个窗口，在m1和m2上同时启动两个flume agent
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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
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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：
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2
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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：
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2
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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：
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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
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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
|
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/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
|
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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
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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。
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