I. Realizing Functions

Flume monitors a log file and sends the data to kafka, and then another flume gets the data from kafka.

II. Implementation steps

1. environment

flume1.6.0

kafka_2.10-0.8.2.1

zookeeper3.4.5

2.flume monitors logs and sends them to kafka's configuration file test1_1.6.conf

[reference: http://archive.cloudera.com/cdh5/cdh/5/flume-ng-1.6.0-cdh5.7.0/FlumeUserGuide.html]

# Name the components on this agent
a1.sources = r1
a1.sinks = k1
a1.channels = c1

# Describe/configure the source
a1.sources.r1.type = exec
a1.sources.r1.command = tail -f  /opt/datas/access.log
a1.sources.r1.channels = c1

# Use a channel which buffers events in memory
a1.channels.c1.type = memory
a1.channels.c1.capacity = 1000
a1.channels.c1.transactionCapacity = 100


# Describe the sink
a1.sinks.k1.type = org.apache.flume.sink.kafka.KafkaSink
a1.sinks.k1.topic = beifeng1
a1.sinks.k1.brokerList = bigdata.ibeifeng.com:9092,bigdata.ibeifeng.com:9093
a1.sinks.k1.requiredAcks = 1
a1.sinks.k1.batchSize = 20
a1.sinks.k1.channel = c1

3.flume obtains the consumption data profile test2_1.6.conf from kafka

[reference: http://archive.cloudera.com/cdh5/cdh/5/flume-ng-1.6.0-cdh5.7.0/FlumeUserGuide.html]

# Name the components on this agent

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

#Configure of Flume Agent Source
a2.sources.r1.type = org.apache.flume.source.kafka.KafkaSource
a2.sources.r1.channels = c1
a2.sources.r1.topic= beifeng1
a2.sources.r1.groupId = flume
a2.sources.r1.zookeeperConnect = localhost:2181/kafka08


#Configure of Flume Agent Source
a2.channels.c1.type = memory


# Configure of Flume Agent Sink=>Kafka Sink
a2.sinks.k1.type=logger
a2.sinks.k1.channel=c1

4.kafka creates topic: beifeng1

bin/kafka-topics.sh --create --topic beifeng1 --zookeeper bigdata.ibeifeng.com:2181/kafka08 --partitions 5 --replication-factor 2 

Three, test

1. Start up zk:uuuuuuuuuuuu

cd /opt/modules/zookeeper-3.4.5
bin/zkServer.sh start

2. Start kafka

bin/kafka-server-start.sh config/server.properties
bin/kafka-server-start.sh config/server1.properties

3. Start the monitoring log and pass kafka's flume service test1_1.6.conf

bin/flume-ng agent --name a1 --conf ./conf/ --conf-file ./conf/test1_1.6.conf -Dflume.root.logger=INFO,console

4. Start the flume service test2_1.6.conf that gets information from kafka

bin/flume-ng agent --name a2 --conf ./conf/ --conf-file ./conf/test2_1.6.conf -Dflume.root.logger=INFO,console

5. Start up kafka consumers

bin/kafka-console-consumer.sh --topic beifeng1 --zookeeper bigdata.ibeifeng.com:2181/kafka08

6. Input data to test file

            echo "liuming gerry tom" >> /opt/datas/access.log

(The test was successful!)