flume 整合kafka

 背景：系统的数据量越来越大，日志不能再简单的文件的保存，如此日志将会越来越大，也不方便查找与分析，综合考虑下使用了flume来收集日志，收集日志后向kafka传递消息，下面给出具体的配置

# The configuration file needs to define the sources,
# the channels and the sinks.
# Sources, channels and sinks are defined per agent,   
# in this case called 'agent'

agent.sources = r1
agent.channels = c1
agent.sinks = s1

# For each one of the sources, the type is defined
agent.sources.r1.type = netcat
agent.sources.r1.bind = localhost
agent.sources.r1.port = 10245
agent.sources.r1.charset = UTF-8

# The channel can be defined as follows.
agent.sources.r1.channels = c1

# Each sink's type must be defined
agent.sinks.s1.type = org.apache.flume.sink.kafka.KafkaSink
agent.sinks.s1.topic = test
agent.sinks.s1.brokerList = ｉｐ:9092
agent.sinks.s1.requiredAcks = 1
agent.sinks.s1.batchSize = 20
agent.sinks.s1.channel = c1

# Each channel's type is defined.
agent.channels.c1.type = memory

# Other config values specific to each type of channel(sink or source)
# can be defined as well
# In this case, it specifies the capacity of the memory channel
agent.channels.c1.capacity = 100

启动方式：

　　 bin/flume-ng agent --conf conf --conf-file conf/kafka.conf --name agent -Dflume.root.logger=INFO,console

再启动之前一定要先启动kafka，这里可能会有一个错误

　　

Caused by: java.util.concurrent.ExecutionException: org.apache.kafka.common.errors.TimeoutException: Batch Expired

这个是因为默认情况下kafka是广播的localhost，所以如果不是同一个机器需要修改下配置

advertised.listeners=PLAINTEXT://ｉｐ:9092把默认的localhost替换成ＩＰ地址　重新启动下就可以了．