Flume监控之Ganglia

4.1 Ganglia的安装与部署

1) 安装httpd服务与php

[FLY@hadoop102 flume]$ sudo yum -y install httpd php　

2) 安装其他依赖

[FLY@hadoop102 flume]$ sudo yum -y install rrdtool perl-rrdtool rrdtool-devel
[FLY@hadoop102 flume]$ sudo yum -y install apr-devel

3) 安装ganglia

[FLY@hadoop102 flume]$ sudo rpm -Uvh http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
[FLY@hadoop102 flume]$ sudo yum -y install ganglia-gmetad 
[FLY@hadoop102 flume]$ sudo yum -y install ganglia-web
[FLY@hadoop102 flume]$ sudo yum install -y ganglia-gmond　

4) 修改配置文件/etc/httpd/conf.d/ganglia.conf

[FLY@hadoop102 flume]$ sudo vim /etc/httpd/conf.d/ganglia.conf

# 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

[FLY@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

[FLY@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
}

　

7) 修改配置文件/etc/selinux/config

[FLY@hadoop102 flume]$ sudo vim /etc/selinux/config

修改为：

# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
#     enforcing - SELinux security policy is enforced.
#     permissive - SELinux prints warnings instead of enforcing.
#     disabled - No SELinux policy is loaded.
SELINUX=disabled
# SELINUXTYPE= can take one of these two values:
#     targeted - Targeted processes are protected,
#     mls - Multi Level Security protection.
SELINUXTYPE=targeted

　

尖叫提示：selinux本次生效关闭必须重启，如果此时不想重启，可以临时生效之：

[FLY@hadoop102 flume]$ sudo setenforce 0

　

5) 启动ganglia

　　

[FLY@hadoop102 flume]$ sudo service httpd start
[FLY@hadoop102 flume]$ sudo service gmetad start
[FLY@hadoop102 flume]$ sudo service gmond start

　

6) 打开网页浏览ganglia页面

http://192.168.1.102/ganglia

尖叫提示：如果完成以上操作依然出现权限不足错误，请修改/var/lib/ganglia目录的权限：

 [FLY@hadoop102 flume]$ sudo chmod -R 777 /var/lib/ganglia

4.2 操作Flume测试监控

1) 修改/opt/module/flume/conf目录下的flume-env.sh配置：

JAVA_OPTS="-Dflume.monitoring.type=ganglia
-Dflume.monitoring.hosts=192.168.1.102:8649
-Xms100m
-Xmx200m"

　　

2) 启动Flume任务

[FLY@hadoop102 flume]$ bin/flume-ng agent 
--conf conf/ 
--name a1 
--conf-file job/flume-telnet-logger.conf 
-Dflume.root.logger==INFO,console 
-Dflume.monitoring.type=ganglia 
-Dflume.monitoring.hosts=192.168.1.102:8649

3) 发送数据观察ganglia监测图

[FLY@hadoop102 flume]$ telnet localhost 44444

　

样式如图：

图例说明：

字段（图表名称）	字段含义
EventPutAttemptCount	source尝试写入channel的事件总数量
EventPutSuccessCount	成功写入channel且提交的事件总数量
EventTakeAttemptCount	sink尝试从channel拉取事件的总数量。这不意味着每次事件都被返回，因为sink拉取的时候channel可能没有任何数据。
EventTakeSuccessCount	sink成功读取的事件的总数量
StartTime	channel启动的时间（毫秒）
StopTime	channel停止的时间（毫秒）
ChannelSize	目前channel中事件的总数量
ChannelFillPercentage	channel占用百分比
ChannelCapacity	channel的容量