一个、ganglia基本介绍

ganglia它是一个分布式监控系统,那里有两个Daemon,每间:clientGangliaMonitoring Daemon (gmond)和服务端GangliaMeta Daemon (gmetad),还有GangliaPHP Web 

Frontend(基于web的动态訪问方式)组成是一个Linux下图形化监控系统执行性能的软件,界面美观、丰富,功能强大而ganglia又依赖于一个webserver用来显示集群状态，用rrdtool来存储数据和生成曲线图，须要xml解析因此须要expat。配置文件解析须要libconfuse。

Ganglia是一个监控server，集群的开源软件，可以用曲线图表现近期一个小时，近期一天，近期一周，近期一月。近期一年的server或者集群的cpu负载,内存,网络,硬盘等指标。

Ganglia的强大在于：ganglia服务端可以通过一台client收集到同一个网段的全部client的数据。ganglia集群服务端可以通过一台服务端收集到它下属的全部client数据。这个体系设计表示一台server可以通过不同的分层可以管理上万台机器。

这个功能是其它mrtg,nagios,cacti所不能比拟。

二、下载及安装

ganglia-3.6.0.tar.gz下载地址http://down.51cto.com/data/1112626

[root@ws ~]# cat /etc/issue
CentOS release 6.5 (Final)
Kernel \r on an \m

[root@ws ~]# uname -a
Linux ws.zdqy.com 2.6.32-431.5.1.el6.i686 #1 SMP Tue Feb 11 21:56:33 UTC 2014 i686 i686 i386 GNU/Linux

[root@ws tmp]# tar xf ganglia-3.6.0.tar.gz

[root@ws ~]# yum -y install apr-devel apr-util check-devel cairo-develpango-devel libxml2-devel rpm-build glib2-devel dbus-develfreetype-devel fontconfig-devel gcc gcc-c++ expat-devel python-devellibXrender-devel

[root@ws ganglia-3.6.0]# rpm -ivh http://dl.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm
Retrieving http://dl.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm
warning: /var/tmp/rpm-tmp.ULcPJf: Header V3 RSA/SHA256 Signature, key ID 0608b895: NOKEY
Preparing...                                        ########################################### [100%]
   1:epel-release                                   ########################################### [100%]
[root@ws ganglia-3.6.0]# yum clean all

[root@ws ganglia-3.6.0]# yum install libconfuse*  -y

Installing:
 libconfuse         i686   2.7-4.el6   epel    79 k
 libconfuse-devel   i686   2.7-4.el6   epel    17 k
[root@ws ~]# yum install libart_lgpl-devel pcre-devel libtool -y

[root@ws softs]# rpmbuild -tb ganglia-3.6.0.tar.gz 

Checking for unpackaged file(s): /usr/lib/rpm/check-files /root/rpmbuild/BUILDROOT/ganglia-3.6.0-1.i386
Wrote: /root/rpmbuild/RPMS/i386/ganglia-gmetad-3.6.0-1.i386.rpm
Wrote: /root/rpmbuild/RPMS/i386/ganglia-gmond-3.6.0-1.i386.rpm
Wrote: /root/rpmbuild/RPMS/i386/ganglia-gmond-modules-python-3.6.0-1.i386.rpm
Wrote: /root/rpmbuild/RPMS/i386/ganglia-devel-3.6.0-1.i386.rpm
Wrote: /root/rpmbuild/RPMS/i386/libganglia-3.6.0-1.i386.rpm
Executing(%clean): /bin/sh -e /var/tmp/rpm-tmp.zQCFRZ
+ umask 022
+ cd /root/rpmbuild/BUILD
+ cd ganglia-3.6.0
+ /bin/rm -rf /root/rpmbuild/BUILDROOT/ganglia-3.6.0-1.i386
+ exit 0

[root@ws softs]# cd /root/rpmbuild/RPMS/
[root@ws RPMS]# ls
i386
[root@ws RPMS]# cd i386/
[root@ws i386]# ls
ganglia-devel-3.6.0-1.i386.rpm
ganglia-gmetad-3.6.0-1.i386.rpm
ganglia-gmond-3.6.0-1.i386.rpm
ganglia-gmond-modules-python-3.6.0-1.i386.rpm
libganglia-3.6.0-1.i386.rpm

[root@ws i386]# rpm -ivh *
Preparing...                                        ########################################### [100%]
   1:libganglia                                     ########################################### [ 20%]
   2:ganglia-gmond                                  ########################################### [ 40%]
   3:ganglia-devel                                  ########################################### [ 60%]
   4:ganglia-gmond-modules-p                        ########################################### [ 80%]
   5:ganglia-gmetad                                 ########################################### [100%]

[root@ws ganglia]# yum install httpd  -y

[root@ws conf]# /etc/init.d/gmond start
Starting GANGLIA gmond:                            [  OK  ]

[root@ws conf]# /etc/init.d/gmetad start
Starting GANGLIA gmetad:                           [  OK  ]

[root@ws softs]# wget http://ftp.jaist.ac.jp/pub/sourceforge/g/ga/ganglia/ganglia-web/3.5.12/ganglia-web-3.5.12.tar.gz

[root@ws softs]# tar xf ganglia-web-3.5.12.tar.gz -C /var/www/html/

[root@ws html]# mv ganglia-web-3.5.12.tar.gz /softs/
[root@ws html]# mv ganglia-web-3.5.12 ganglia

三、调试

訪问页面http://192.168.0.104/ganglia/index.php

发现报错

是由于对应的文件夹没有建，并且权限不正确

建立对应的文件夹，将文件夹权限改为777

mkdir -p /var/www/html/ganglia/dwoo/compiled
mkdir -p /var/www/html/ganglia/dwoo/cache
chmod 777 /var/www/html/ganglia/dwoo/compiled
chmod 777 /var/www/html/ganglia/dwoo/cache

[root@ws ganglia-web]# find . -type d 
.
./cache
./conf
./dwoo
./dwoo/cache
./dwoo/compiled
./dwoo/compiled/templates
./dwoo/compiled/templates/default
[root@ws ganglia-web]# pwd

/var/lib/ganglia-web

然后重新启动httpd，又一次訪问

这是ganglia本机的一些监控信息

以下还须要对被监控主机进行配置。

[root@localhost yum.repos.d]# rpm -ivh http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm

[root@localhost yum.repos.d]# yum install  ganglia-gmond 

[root@ws softs]# rpmbuild -tb ganglia-3.6.0.tar.gz 
error: Failed build dependencies:
        libpng-devel is needed by ganglia-3.6.0-1.i386
        python-devel is needed by ganglia-3.6.0-1.i386

解决方法

[root@ws ~]# yum install libpng-devel python-devel  -y

Fatal error:

Errors were detected in your configuration.

• Unable to create overlay events file: /var/lib/ganglia-web/conf/events.json
• Unable to create event color map file: /var/lib/ganglia-web/conf/event_color.json
• DWOO compiled templates directory ‘/var/lib/ganglia-web/dwoo/compiled‘ is not writeable.
  Please adjust $conf[‘dwoo_compiled_dir‘].
• DWOO cache directory ‘/var/lib/ganglia-web/dwoo/cache‘ is not writeable.
  Please adjust $conf[‘dwoo_cache_dir‘].