Create 4、Flume对接Kafka实践操作.md

Author: MoRan1607

Kafka/4、Flume对接Kafka实践操作.md

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+四、Flume对接Kafka
+---
+  一般实际应用中，会通过Flume+Kafka来对产生的数据进行采集，也可以在Kafka中对数据进行一个初步的处理，用于后续Spark或MapReduce的使用，
+这个案例主要是实现Flume和Kafka的对接，
+#### 1、配置flume(flume-kafka.conf)
+```xml
+# define
+a1.sources = r1
+a1.sinks = k1
+a1.channels = c1
+
+# source
+a1.sources.r1.type = exec
+a1.sources.r1.command = tail -F -c +0 /opt/module/datas/flume.log
+a1.sources.r1.shell = /bin/bash -c
+
+# sink
+a1.sinks.k1.type = org.apache.flume.sink.kafka.KafkaSink
+a1.sinks.k1.kafka.bootstrap.servers = hadoop102:9092,hadoop103:9092,hadoop104:9092
+a1.sinks.k1.kafka.topic = first
+a1.sinks.k1.kafka.flumeBatchSize = 20
+a1.sinks.k1.kafka.producer.acks = 1
+a1.sinks.k1.kafka.producer.linger.ms = 1
+
+# channel
+a1.channels.c1.type = memory
+a1.channels.c1.capacity = 1000
+a1.channels.c1.transactionCapacity = 100
+
+# bind
+a1.sources.r1.channels = c1
+a1.sinks.k1.channel = c1
+```  
+
+#### 2、启动kafkaIDEA消费者（上一篇文章有）
+#### 3、进入flume根目录下，启动flume
+```xml
+bin/flume-ng agent -c conf/ -n a1 -f jobs/flume-kafka.conf
+```  
+#### 4、向/opt/module/datas/flume.log里追加数据，查看kafka消费者消费情况
+```xml
+echo hello >> /opt/module/datas/flume.log
+```   
+
+