以下動作皆在 DRBL server 上處理

== Ganglia ==

 1. Install (Base on Ubuntu Dapper)
  1.1 Install necessary package from repository : apache2-php4, php4-gd, php4-jpgraph, php4-rrdtool, rrdtool, gcc, g++, libc6, librrd2-dev
  1.1 Download last stable version ganglia
	http://sourceforge.net/project/showfiles.php?group_id=43021&package_id=35280
	(In our case, use "ganglia-3.0.4.tar.gz" )
  1.1	Uncompress package, and configure and make
{{{
$ tar xzvf ganglia-3.0.4.tar.gz; cd /ganglia-3.0.4
$ ./configure --with-gmetad --prefix=/opt/ganglia
$ make
$ sudo make install
}}}
   1.1 Install Web Frontend:
{{{
$ cp -a web /var/www/ganglia
}}}
1.2 Configure
	1.2.0 Add a user, group for ganglia service, say "ganglia:ganglia"
	1.2.1 On frontend, create a gmond configuration file named gmond.conf
	$ /opt/ganglia/sbin/gmond --default_config > /etc/gmond.conf

	$ vi /etc/gmond.conf
globals {
  daemonize = yes
  setuid = yes
  user = ganglia	-------------> match 1.2.0
  debug_level = 0
  max_udp_msg_len = 1472
  mute = no
  deaf = no
  host_dmax = 0 /*secs */
  cleanup_threshold = 300 /*secs */
  gexec = no
}


cluster {
  name = "DRBL Cluster Project"	-------------> as you want
  owner = "NCHC OSS Lab"	-------------> as you want
  latlong = "unspecified"
  url = "unspecified"
}
udp_send_channel {
  host = 192.168.201.254 ---------------> match your LAN connection ip
  port = 8649
}
	1.2.2 On frontend, create a Gmetad configuration file named gmetad.conf
	$ cp /opt/src/ganglia-3.0.4/gmetad/gmetad.conf /etc/gmetad.conf
	$ vi /etc/gmetad.conf
data_source "Test Cluster" 127.0.0.1:8649

trusted_hosts 127.0.0.1

setuid_username "ganglia"

	1.2.3 On frontend, edit web frontend configuration file named conf.php
	$ vi /var/www/ganglia/conf.php
$gmetad_root = "/var/lib/ganglia";
$rrds = "$gmetad_root/rrds";

define("RRDTOOL", "/usr/bin/rrdtool");

$ganglia_ip = "127.0.0.1";
	
1.3 Setup Ganglia service and start up
	1.3.1 Perpare rrd log directory
	$ mkdir -p /var/lib/ganglia/rrds
	$ chown ganglia:ganglia /var/lib/ganglia/rrds

	1.3.2 Setup service on /etc/rc.local   ---------> client 要保留，或以其他方式起動
	$ vi /ect/rc.local
# Start up ganglia service
/opt/ganglia/sbin/gmond
/opt/ganglia/sbin/gmetad	--------> client 則可以不用

	1.3.3 Start up necessary service
	$ /opt/ganglia/sbin/gmetad
	$ /opt/ganglia/sbin/gmond

1.4 Setup frontend php web page
	1.4.1 Copy necessary frontend php scripts
	$ cp -a /opt/src/ganglia-3.0.4/web /var/www/ganglia
	1.4.2 Make sure the follow session is correct in config.conf
	$ vi /var/www/ganglia/conf.php

$gmetad_root = "/var/lib/ganglia";
$rrds = "$gmetad_root/rrds";

define("RRDTOOL", "/usr/bin/rrdtool");

$ganglia_ip = "127.0.0.1";