Flume学习笔记
官方文档
核心组件
- Source 收集
- Channel 聚集
- Sink 输出
Flume 安装前置条件
- Java Runtime Environment - Java 1.8 or later
- Memory - Sufficient memory for configurations used by sources, channels or sinks
- Disk Space - Sufficient disk space for configurations used by channels or sinks
- Directory Permissions - Read/Write permissions for directories used by agent
安装
- 安装jdk
- 下载并解压到用户目录
- 配置环境变量 export FLUME_HOME="/Users/gaowenfeng/Documents/bigdata/flume" export PATH=$FLUME_HOME/bin:$PATH
- source 下让其生效
- flume-env.sh 的配置
export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0_91.jdk/Contents/Home- 检测 $FLUME_HOME/bin/flume-ng version
需求1
使用flume的关键就是写配置文件
- 配置Source
- 配置Channel
- 配置Sink
- 把以上三个组件穿起来
# example.conf: A single-node Flume configuration
# a1 agent 的名称
# r1 surce 的名称
# k1 sink 的名称
# c1 channel 的名称
# Name the components on this agent
a1.sources = r1
a1.sinks = k1
a1.channels = c1
# Describe/configure the source
a1.sources.r1.type = netcat
a1.sources.r1.bind = localhost
a1.sources.r1.port = 44444
# Describe the sink
a1.sinks.k1.type = logger
# Use a channel which buffers events in memory
a1.channels.c1.type = memory
# Bind the source and sink to the channel
a1.sources.r1.channels = c1
a1.sinks.k1.channel = c1启动Agent
flume-ng agent \
--name a1 \
--conf conf $FLUME_HOME/conf \
--conf-file $FLUME_HOME/conf/example.conf \
-Dflume.root.logger=INFO,console使用telnet进行测试
telnet host ipEvent: { headers:{} body: 68 65 6C 6C 6F 0D hello. }
Event 是Flume 数据传输的基本单元
Event = 可选的header+byte array需求2
Agent 选型：exec source +memory channel+logger sink
exex-memory-logger.conf
# Name the components on this agent
a1.sources = r1
a1.sinks = k1
a1.channels = c1
# Describe/configure the source
a1.sources.r1.type = exec
a1.sources.r1.command = tail -F /Users/gaowenfeng/data/data.log
a1.sources.r1.shell = /bin/sh -c
# Describe the sink
a1.sinks.k1.type = logger
# Use a channel which buffers events in memory
a1.channels.c1.type = memory
# Bind the source and sink to the channel
a1.sources.r1.channels = c1
a1.sinks.k1.channel = c1启动agent
flume-ng agent \
--name a1 \
--conf conf $FLUME_HOME/conf \
--conf-file $FLUME_HOME/conf/exex-memory-logger.conf \
-Dflume.root.logger=INFO,console需求3
技术选型:
exec source + memory channel + avro sink
avro source + memory channel + logger sinkexec-memory-avro.conf
# Name the components on this agent
exec-memory-avro.sources = exec-source
exec-memory-avro.sinks = avro-sink
exec-memory-avro.channels = memory-channel
# Describe/configure the source
exec-memory-avro.sources.exec-source.type = exec
exec-memory-avro.sources.exec-source.command = tail -F /Users/gaowenfeng/data/data.log
exec-memory-avro.sources.exec-source.shell = /bin/sh -c
# Describe the sink
exec-memory-avro.sinks.avro-sink.type = avro
exec-memory-avro.sinks.avro-sink.hostname = localhost
exec-memory-avro.sinks.avro-sink.port = 44444
# Use a channel which buffers events in memory
exec-memory-avro.channels.memory-channel.type = memory
# Bind the source and sink to the channel
exec-memory-avro.sources.exec-source.channels = memory-channel
exec-memory-avro.sinks.avro-sink.channel = memory-channelavro-memory-logger.conf
# Name the components on this agent
avro-memory-logger.sources = avro-source
avro-memory-logger.sinks = logger-sink
avro-memory-logger.channels = memory-channel
# Describe/configure the source
avro-memory-logger.sources.avro-source.type = avro
avro-memory-logger.sources.avro-source.bind = localhost
avro-memory-logger.sources.avro-source.port = 44444
# Describe the sink
avro-memory-logger.sinks.logger-sink.type = logger
# Use a channel which buffers events in memory
avro-memory-logger.channels.memory-channel.type = memory
# Bind the source and sink to the channel
avro-memory-logger.sources.avro-source.channels = memory-channel
avro-memory-logger.sinks.logger-sink.channel = memory-channel先启动agent
flume-ng agent \
--name avro-memory-logger \
--conf conf $FLUME_HOME/conf \
--conf-file $FLUME_HOME/conf/avro-memory-logger.conf \
-Dflume.root.logger=INFO,console再启动
flume-ng agent \
--name exec-memory-avro \
--conf conf $FLUME_HOME/conf \
--conf-file $FLUME_HOME/conf/exec-memory-avro.conf \
-Dflume.root.logger=INFO,console日志收集过程
- 机器A上哪个监控一个文件，当我们访问主站的时候会有用户行为日志记录到access.log中
- avro sin把新产生的日志输出到对应的avro source指定的hostname port 中
- 通过avro source对应的agent将日志输出到对应的控制台[kafaka]
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原始发表：2018.01.01 ，如有侵权请联系 cloudcommunity@tencent.com 删除
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