多Flume传输到单Flume

2022年3月2日21:48:43 发表评论 1,952 views

目标:flume11监控文件hive.log,flume-22监控某一个端口的数据流,flume11与flume-22将数据发送给flume-33,flume33将最终数据写入到HDFS。

分步实现:

1) 创建flume11.conf,用于监控hive.log文件,同时sink数据到flume-33:

# 1 agent
a1.sources = r1
a1.sinks = k1
a1.channels = c1

# 2 source
a1.sources.r1.type = exec
a1.sources.r1.command = tail -F /opt/Shalltest
a1.sources.r1.shell = /bin/bash -c

# 3 sink
a1.sinks.k1.type = avro
a1.sinks.k1.hostname = bigdata166
a1.sinks.k1.port = 4141

# 4 channel
a1.channels.c1.type = memory
a1.channels.c1.capacity = 1000
a1.channels.c1.transactionCapacity = 100

# 5. Bind
a1.sources.r1.channels = c1
a1.sinks.k1.channel = c1

创建flume22.conf,用于监控端口44444数据流,同时sink数据到flume-33:

# 1 agent
a2.sources = r1
a2.sinks = k1
a2.channels = c1

# 2 source
a2.sources.r1.type = netcat
a2.sources.r1.bind = bigdata166
a2.sources.r1.port = 44444

#3 sink
a2.sinks.k1.type = avro
a2.sinks.k1.hostname = bigdata166
a2.sinks.k1.port = 4141

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

# 5 Bind
a2.sources.r1.channels = c1
a2.sinks.k1.channel = c1

 

创建flume33.conf,用于接收flume11与flume22发送过来的数据流,最终合并后sink到HDFS:

# 1 agent
a3.sources = r1
a3.sinks = k1
a3.channels = c1

# 2 source
a3.sources.r1.type = avro
a3.sources.r1.bind = bigdata166
a3.sources.r1.port = 4141

# 3 sink
a3.sinks.k1.type = hdfs
a3.sinks.k1.hdfs.path = hdfs://bigdata166:9000/flume3/%H
#上传文件的前缀
a3.sinks.k1.hdfs.filePrefix = flume3-
#是否按照时间滚动文件夹
a3.sinks.k1.hdfs.round = true
#多少时间单位创建一个新的文件夹
a3.sinks.k1.hdfs.roundValue = 1
#重新定义时间单位
a3.sinks.k1.hdfs.roundUnit = hour
#是否使用本地时间戳
a3.sinks.k1.hdfs.useLocalTimeStamp = true
#积攒多少个Event才flush到HDFS一次
a3.sinks.k1.hdfs.batchSize = 100
#设置文件类型,可支持压缩
a3.sinks.k1.hdfs.fileType = DataStream
#多久生成一个新的文件
a3.sinks.k1.hdfs.rollInterval = 600
#设置每个文件的滚动大小大概是128M
a3.sinks.k1.hdfs.rollSize = 134217700
#文件的滚动与Event数量无关
a3.sinks.k1.hdfs.rollCount = 0
#最小冗余数
a3.sinks.k1.hdfs.minBlockReplicas = 1

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

# 5 Bind
a3.sources.r1.channels = c1
a3.sinks.k1.channel = c1


执行测试:

分别开启对应flume-job(依次启动flume-33,flume-22,flume11),同时产生文件变动并观察结果:

$ bin/flume-ng agent --conf conf/ --name a3 --conf-file jobconf/flume33.conf

$ bin/flume-ng agent --conf conf/ --name a2 --conf-file jobconf/flume22.conf

$ bin/flume-ng agent --conf conf/ --name a1 --conf-file jobconf/flume11.conf

telnet bigdata111 44444 打开后发送5555555

在/opt/Shalltest中追加666666

debug思想:

因为Flume是基于事务处理的,因此当启动顺序混乱的时候会在管道内保留一阵子,当重试次数过多后会断开连接,如果不成功可以多注意一下顺序,还有就是可以看下日志以及连接配置相关的一些信息。

 

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