flume-ng负载均衡load-balance、failover集群搭建

转自：http://blog.csdn.net/morning_pig/article/details/9093149

集群采用3台机器：

 host1 load-balance设置
 host2 机器1
 host3 机器2

其中，host1 机器配置：

 #Define a memory channel called c1 on a1
 a1.channels = c1
 a1.sources = r1
 a1.sinks = k1 k2
 a1.sinkgroups = g1
 a1.sinkgroups.g1.sinks = k1 k2
 a1.sinkgroups.g1.processor.type = load_balance
 a1.sinkgroups.g1.processor.selector = round_robin
 a1.sinkgroups.g1.processor.backoff = true

 a1.channels.c1.type = file
 a1.channels.c1.checkpointDir = /tmp/flume/loadcheckpoint
 a1.channels.c1.dataDirs = /tmp/flume/loaddata

 a1.sources.r1.channels = c1
 a1.sources.r1.type = avro
 a1.sources.r1.bind = 0.0.0.0
 a1.sources.r1.port = 41415

 a1.sinks.k1.channel = c1
 a1.sinks.k1.type = avro
 a1.sinks.k1.hostname = host2
 a1.sinks.k1.port = 41414
 a1.sinks.k2.channel = c1
 a1.sinks.k2.type = AVRO
 a1.sinks.k2.hostname = host3
 a1.sinks.k2.port = 41414

host2 机器配置：

 a2.channels = c1
 a2.sources = r1
 a2.sinks = k1

 a2.channels.c1.type = FILE
 a1.channels.c1.checkpointDir = /tmp/flume/checkpoint
 a1.channels.c1.dataDirs = /tmp/flume/data

 a2.sources.r1.channels = c1
 a2.sources.r1.type = AVRO
 a2.sources.r1.bind = 0.0.0.0
 a2.sources.r1.port = 41414

 a2.sinks.k1.channel = c1
 a2.sinks.k1.type = file_roll
 a2.sinks.k1.sink.directory = /tmp/load/
 a2.sinks.k1.sink.rollInterval = 0

 

host3 机器配置：

 a2.channels = c1
 a2.sources = r1
 a2.sinks = k1

 a2.channels.c1.type = FILE
 a1.channels.c1.checkpointDir = /tmp/flume/checkpoint
 a1.channels.c1.dataDirs = /tmp/flume/data

 a2.sources.r1.channels = c1
 a2.sources.r1.type = AVRO
 a2.sources.r1.bind = 0.0.0.0
 a2.sources.r1.port = 41414

 a2.sinks.k1.channel = c1
 a2.sinks.k1.type = file_roll
 a2.sinks.k1.sink.directory = /tmp/load/
 a2.sinks.k1.sink.rollInterval = 0

客户端机器暂时使用flume-ng的agent发送，配置如下：

 # Define a memory channel called c1 on a1
 a1.channels.c1.type = file
 a1.channels.c1.checkpointDir = /tmp/flume/checkpoint
 a1.channels.c1.dataDirs = /tmp/flume/data


 a1.sources.r1.channels = c1
 a1.sources.r1.type = exec
 a1.sources.r1.command = cat /tmp/linux.log

 a1.sinks.k1.type = avro
 a1.sinks.k1.channel = c1
 a1.sinks.k1.hostname = host1
 a1.sinks.k1.port = 41415

 a1.channels = c1
 a1.sources = r1
 a1.sinks = k1

客户端/tmp/linux.log文件3G左右，发送给host1。

 

启动：

host2：

 bin/flume-ng agent -c conf -f conf/load-sink1.conf -n a2

host3：

 bin/flume-ng agent -c conf -f conf/load-sink2.conf -n a2

host1：

 bin/flume-ng agent -c conf -f conf/load-balance.conf -n a1

客户端：

 bin/flume-ng agent -c conf -f conf/client.conf -n a1

 

注意：启动方式最好是从下往上启动。即：先启动host2和host3，然后启动host1，最后启动client。

测试过程中，可以随时将host2或host3停止，过一段时间再启动。

这样，就测试了flume-ng的load-balance和failover功能。