kafka（官网地址：http://kafka.apache.org）是一款分布式消息发布和订阅的系统
在Flume中的KafkaChannel支持Flume与Kafka整合，可以将Kafka当做channel使用，其主要配置项如下
a1.sources = r1
a1.sinks = k1
a1.channels = c1 # source
...... # sink
...... # channel
a1.channels.c1.type=org.apache.flume.channel.kafka.KafkaChannel
a1.channels.c1.capacity=
a1.channels.c1.transactionCapacity=
a1.channels.c1.brokerList=192.168.10.83:,192.168.10.84:
a1.channels.c1.topic=flume_ulog_channel
a1.channels.c1.zookeeperConnect=192.168.10.83: # Bind the source and sink to the channel
a1.sources.r1.channels = c1
a1.sinks.k1.channel = c1