Flume案例：多个channle/sink

多个channel/sink

需求：监控hive.log文件，用同时产生两个channel，一个channel对应的sink存储到hdfs中，
另外一个channel对应的sink存储到本地。

配置:

1)flumejob_1.conf

# name the components on this agent 
a1.sources = r1
a1.sinks = k1 k2 
a1.channels = c1 c2
# 将数据流复制给多个 channel
a1.sources.r1.selector.type = replicating

# Describe/configure the source 
a1.sources.r1.type = exec
a1.sources.r1.command = tail -F /tmp/root/hive.log
a1.sources.r1.shell = /bin/bash -c


# Describe the sink
# 分两个端口发送数据 
a1.sinks.k1.type = avro 
a1.sinks.k1.hostname = master
a1.sinks.k1.port = 4141

a1.sinks.k2.type = avro 
a1.sinks.k2.hostname = master 
a1.sinks.k2.port = 4142

# Describe the channel 
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

# Bind the source and sink to the channel 
a1.sources.r1.channels = c1 c2 
a1.sinks.k1.channel = c1
a1.sinks.k2.channel = c2

2)flumejob_2.conf

# Name the components on this agent 
a2.sources = r1
a2.sinks = k1 
a2.channels = c1

# Describe/configure the source
a2.sources.r1.type = avro 
# 端口抓取数据
a2.sources.r1.bind = master
a2.sources.r1.port = 4141

# Describe the sink 
a2.sinks.k1.type = hdfs
a2.sinks.k1.hdfs.path = hdfs://master:9000/flume2/%Y%m%d/%H

#上传文件的前缀
a2.sinks.k1.hdfs.filePrefix = flume2-
#是否按照时间滚动文件夹
a2.sinks.k1.hdfs.round = true
#多少时间单位创建一个新的文件夹
a2.sinks.k1.hdfs.roundValue = 1
#重新定义时间单位
a2.sinks.k1.hdfs.roundUnit = hour
#是否使用本地时间戳
a2.sinks.k1.hdfs.useLocalTimeStamp = true
#积攒多少个 Event 才 flush 到 HDFS 一次
a2.sinks.k1.hdfs.batchSize = 100

#设置文件类型，可支持压缩
a2.sinks.k1.hdfs.fileType = DataStream
#多久生成一个新的文件
a2.sinks.k1.hdfs.rollInterval = 600
#设置每个文件的滚动大小大概是 128M 
a2.sinks.k1.hdfs.rollSize = 134217700
#文件的滚动与 Event 数量无关
a2.sinks.k1.hdfs.rollCount = 0
#最小副本数
a2.sinks.k1.hdfs.minBlockReplicas = 1

# Describe the channel 
a2.channels.c1.type = memory 
a2.channels.c1.capacity = 1000
a2.channels.c1.transactionCapacity = 100

# Bind the source and sink to the channel 
a2.sources.r1.channels = c1
a2.sinks.k1.channel = c1

3)flumejob_3.conf

# Name the components on this agent 
a3.sources = r1
a3.sinks = k1 
a3.channels = c1

# Describe/configure the source 
a3.sources.r1.type = avro
a3.sources.r1.bind = master
a3.sources.r1.port = 4142

# Describe the sink 
a3.sinks.k1.type = file_roll
a3.sinks.k1.sink.directory = /root/flume2

# Describe the channel 
a3.channels.c1.type = memory 
a3.channels.c1.capacity = 1000
a3.channels.c1.transactionCapacity = 100


# Bind the source and sink to the channel 
a3.sources.r1.channels = c1
a3.sinks.k1.channel = c1

启动三个配置文件，操作hive，会产生日志在HDFS和本地，在本地的文件夹需要自己创建，并且在这里conf3用的默认的30秒生成一个文件，可以根据不同需求更改配置信息。