4．执行配置文件
分别开启对应配置文件：flume3-flume-logger.conf，flume2-netcat-flume.conf，flume1-logger-flume.conf。
[atguigu@hadoop104 flume]$ bin/flume-ng agent --conf conf/ --name a3 --conf-file job/group3/flume3-flume-logger.conf -Dflume.root.logger=INFO,console

[atguigu@hadoop102 flume]$ bin/flume-ng agent --conf conf/ --name a2 --conf-file job/group3/flume2-netcat-flume.conf

[atguigu@hadoop103 flume] echo 'hello' > group.log
6．在hadoop102上向44444端口发送数据
[atguigu@hadoop102 flume]$ telnet hadoop102 44444
7.检查hadoop104上数据

第4章 Flume监控之Ganglia
4.1 Ganglia的安装与部署

1. 安装httpd服务与php
   [atguigu@hadoop102 flume]$ sudo yum -y install httpd php
2. 安装其他依赖
   [atguigu@hadoop102 flume] sudo yum -y install apr-devel
3. 安装ganglia
   [atguigu@hadoop102 flume] sudo yum -y install ganglia-gmetad
   [atguigu@hadoop102 flume] sudo yum install -y ganglia-gmond
4. 修改配置文件/etc/httpd/conf.d/ganglia.conf
   [atguigu@hadoop102 flume]$ sudo vim /etc/httpd/conf.d/ganglia.conf
   修改为红颜色的配置：

Ganglia monitoring system php web frontend

Alias /ganglia /usr/share/ganglia
<Location /ganglia>
Order deny,allow
Deny from all
Allow from all

Allow from 127.0.0.1

Allow from ::1

Allow from .example.com

</Location>

5. 修改配置文件/etc/ganglia/gmetad.conf
   [atguigu@hadoop102 flume]$ sudo vim /etc/ganglia/gmetad.conf
   修改为：
   data_source "hadoop102" 192.168.1.102
6. 修改配置文件/etc/ganglia/gmond.conf
   [atguigu@hadoop102 flume]$ sudo vim /etc/ganglia/gmond.conf
   修改为：
   cluster {
   name = "hadoop102"
   owner = "unspecified"
   latlong = "unspecified"
   url = "unspecified"
   }
   udp_send_channel {

bind_hostname = yes # Highly recommended, soon to be default.

                   # This option tells gmond to use a source address
                   # that resolves to the machine's hostname.  Without
                   # this, the metrics may appear to come from any
                   # interface and the DNS names associated with
                   # those IPs will be used to create the RRDs.

mcast_join = 239.2.11.71

host = 192.168.1.102
port = 8649
ttl = 1
}
udp_recv_channel {

mcast_join = 239.2.11.71

port = 8649
bind = 192.168.1.102
retry_bind = true

Size of the UDP buffer. If you are handling lots of metrics you really

should bump it up to e.g. 10MB or even higher.

buffer = 10485760

}

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