多資料來源彙總案例

1）案例需求：

hadoop103上的flume-1監控檔案hive.log，

hadoop104上的flume-2監控某一個埠的資料流，

flume-1與flume-2將資料傳送給hadoop102上的flume-3，flume-3將最終資料列印到控制檯

2）需求分析：

3）實現步驟：

0．準備工作

分發flume

[jason@hadoop102 module]$ xsync flume

在hadoop102、hadoop103以及hadoop104的/opt/module/flume/job目錄下建立一個group2檔案夾

[jason@hadoop102 job]$ mkdir
 
 group2


[jason@hadoop103 job]$ mkdir group2


[jason@hadoop104 job]$ mkdir group2

1．建立flume1.conf

配置source用於監控hive.log檔案，配置sink輸出資料到下一級flume。

在hadoop103上建立配置檔案並開啟

[jason@hadoop103 group2]$ touch flume1.conf


[jason@hadoop103 group2]$ vim flume1.conf

新增如下內容

# 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．建立flume2.conf

配置source監控埠44444資料流，配置sink資料到下一級flume：

在hadoop104上建立配置檔案並開啟

[jason@hadoop104 group2]$ touch flume2.conf


[jason@hadoop104 group2]$ vim flume2.conf

新增如下內容

# 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．建立flume3.conf

配置source用於接收flume1與flume2傳送過來的資料流，最終合併後sink到控制檯。

在hadoop102上建立配置檔案並開啟

[jason@hadoop102 group2]$ touch flume3.conf


[jason@hadoop102 group2]$ vim flume3.conf

新增如下內容

# 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．執行配置檔案

分別開啟對應配置檔案：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目錄下的group.log追加內容

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

6．在hadoop104上向44444埠傳送資料

[jason@hadoop104 flume]$ telnet hadoop104 44444

7.檢查hadoop102上資料