Flume案例：多数据源汇总案例

多数据源汇总案例 

1） 案例需求：

hadoop103上的flume-1监控文件hive.log，

hadoop104上的flume-2监控某一个端口的数据流，

flume-1与flume-2将数据发送给hadoop102上的flume-3，flume-3将最终数据打印到控制台

2）需求分析：

3）实现步骤：

0．准备工作

分发flume

[jason@hadoop102 module]$ xsync flume

在hadoop102、hadoop103以及hadoop104的/opt/module/flume/job目录下创建一个group2文件夹

[jason@hadoop102 job]$ mkdir group2


[jason@hadoop103 job]$ mkdir group2


[jason@hadoop104 job]$ mkdir group2

1．创建flume1.conf

配置source用于监控hive.log文件，配置sink输出数据到下一级flume。

在hadoop103上创建配置文件并打开

[jason@hadoop103 group2]$ touch flume1.conf


[jason@hadoop103 group2]$ vim flume1.conf

添加如下内容

# 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/module/group.log


a1.sources.r1.shell = /bin/bash -c


 


# Describe the sink


a1.sinks.k1.type = avro


a1.sinks.k1.hostname = hadoop102


a1.sinks.k1.port = 4141


 


# Describe the channel


a1.channels.c1.type = memory


a1.channels.c1.capacity = 1000


a1.channels.c1.transactionCapacity = 100


 


# Bind the source and sink to the channel


a1.sources.r1.channels = c1


a1.sinks.k1.channel = c1

2．创建flume2.conf

配置source监控端口44444数据流，配置sink数据到下一级flume：

在hadoop104上创建配置文件并打开

[jason@hadoop104 group2]$ touch flume2.conf


[jason@hadoop104 group2]$ vim flume2.conf

添加如下内容

# Name the components on this agent
a2.sources = r1

a2.sinks = k1

a2.channels = c1


# Describe/configure the source
a2.sources.r1.type = netcat

a2.sources.r1.bind = hadoop104

a2.sources.r1.port = 44444


# Describe the sink
a2.sinks.k1.type = avro

a2.sinks.k1.hostname = hadoop102

a2.sinks.k1.port = 4141
 

# Use a channel which buffers events in memory
a2.channels.c1.type = memory

a2.channels.c1.capacity = 1000

a2.channels.c1.transactionCapacity = 100


# Bind the source and sink to the channel
a2.sources.r1.channels = c1

a2.sinks.k1.channel = c1

3．创建flume3.conf

配置source用于接收flume1与flume2发送过来的数据流，最终合并后sink到控制台。

在hadoop102上创建配置文件并打开

[jason@hadoop102 group2]$ touch flume3.conf


[jason@hadoop102 group2]$ vim flume3.conf

添加如下内容

# Name the components on this agent
a3.sources = r1

a3.sinks = k1

a3.channels = c1
 
# Describe/configure the source
a3.sources.r1.type = avro

a3.sources.r1.bind = hadoop102

a3.sources.r1.port = 4141
 
# Describe the sink
a3.sinks.k1.type = logger
 
# Describe the channel
a3.channels.c1.type = memory

a3.channels.c1.capacity = 1000


a3.channels.c1.transactionCapacity = 100
 
# Bind the source and sink to the channel
a3.sources.r1.channels = c1

a3.sinks.k1.channel = c1

4．执行配置文件

分别开启对应配置文件：flume3.conf，flume2.conf，flume1.conf。

[jason@hadoop102 flume]$ bin/flume-ng agent --conf conf/ --name a3 --conf-file job/group2/flume3.conf -Dflume.root.logger=INFO,console

[jason@hadoop104 flume]$ bin/flume-ng agent --conf conf/ --name a2 --conf-file job/group2/flume2.conf

[jason@hadoop103 flume]$ bin/flume-ng agent --conf conf/ --name a1 --conf-file job/group2/flume1.conf

5．在hadoop103上向/opt/module目录下的group.log追加内容

[jason@hadoop103 module]$ echo 'hello' > group.log

6．在hadoop104上向44444端口发送数据

[jason@hadoop104 flume]$ telnet hadoop104 44444

7.检查hadoop102上数据