Flume-监控之Ganglia

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 rrdtool perl-rrdtool rrdtool-devel

[atguigu@hadoop102 flume]$ sudo yum -y install apr-devel

 

3) 安装 ganglia

[atguigu@hadoop102 flume]$ sudo rpm -Uvh http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm

[atguigu@hadoop102 flume]$ sudo yum -y install ganglia-gmetad

[atguigu@hadoop102 flume]$ sudo yum -y install ganglia-web

[atguigu@hadoop102 flume]$ sudo yum install -y ganglia-gmond

 

安装时遇到错误如下：

Error:Cannot retrieve metalink for repository: epel. Please verify its path and try again

解决方法：

将

1. name=Extra Packages for Enterprise Linux 6 - $basearch
2. #baseurl=http://download.fedoraproject.org/pub/epel/6/$basearch

修改为：

1. baseurl=http://download.fedoraproject.org/pub/epel/6/$basearch
2. #mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=epel-6&arch=$basearch

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

[atguigu@hadoop102 flume]$ sudo vi /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 vi /etc/ganglia/gmetad.conf

修改为：

　　data_source "node01" 192.168.1.21

 

6) 修改配置文件/etc/ganglia/gmond.conf

　　[atguigu@hadoop102 flume]$ sudo vi /etc/ganglia/gmond.conf

修改为：

cluster {
 name = "node01"
 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 = 192.168.174.121
 port = 8649
 ttl = 1
}
udp_recv_channel {
 # mcast_join = 239.2.11.71
 port = 8649
 bind = 192.168.174.21
 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

　　[atguigu@hadoop102 flume]$ sudo vi /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：

　　[atguigu@hadoop102 flume]$ sudo setenforce 0

 

 

5) 启动 ganglia

　　[atguigu@hadoop102 flume]$ sudo service httpd start

　　[atguigu@hadoop102 flume]$ sudo service gmetad start

　　[atguigu@hadoop102 flume]$ sudo service gmond start

 

6) 打开网页浏览 ganglia 页面

http://192.168.174.21/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：

[atguigu@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=192.168.174.21:8649

-Xms100m

-Xmx200m"

 

2) 启动 Flume 任务

[atguigu@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

[atguigu@hadoop102 flume]$ telnet localhost 44444

样式如图：