Install ganglia on ec2/eucalyptus instances

ganglia.sh

# allow security group
euca-authorize -P tcp -p 22 default 
euca-authorize -P tcp -p 80 default 

################################
# Install Ganglia on Meta Node #
################################

# install EPEL repo
yum install http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm -y

# install Ganglia
yum install ganglia ganglia-gmetad ganglia-web ganglia-gmond -y

# allow all for apache
vim /etc/httpd/conf.d/ganglia.conf

# file will look like below
  Alias /ganglia /usr/share/ganglia
  <Location /ganglia>
    Order deny,allow
    Deny from all
    Allow from all
    Allow from ::1
    # Allow from .example.com
  </Location>

# modify gmetad.conf file and put cluster name
vim /etc/ganglia/gmetad.conf

# for this example the cluster name is 'my cluster'
data_source "my cluster" localhost 

# modify gmond.conf file on the Meta Node
vim /etc/ganglia/gmond.conf

# modify the following part only
# EC2 instances do not have multicast support, so using UDP only

globals {
  daemonize = yes
  setuid = yes
  user = ganglia
  debug_level = 0
  max_udp_msg_len = 1472
  mute = no
  deaf = no
  allow_extra_data = yes
  host_dmax = 0 /*secs */
  cleanup_threshold = 300 /*secs */
  gexec = no
  send_metadata_interval = 5 /*secs CHANGED!! */ 
}

cluster {
  name = "my cluster" /* CHANGED!! */
  owner = "unspecified"
  latlong = "unspecified"
  url = "unspecified"
}

udp_send_channel {
  /* removed the bind_hostname and mcast_join */
  host = 10.104.3.128 /* Meta Node hostname or IP address */
  port = 8649
  ttl = 1
}

udp_recv_channel {
  /* removed the mcast_join and bind */
  port = 8649
}

tcp_accept_channel {
  port = 8649
}

# change run level
chkconfig gmetad on
chkconfig gmond on
chkconfig httpd on

# start the services
service gmetad start
service gmond start
service httpd start

#####################################
# Install Ganglia on Monitoring Nodes #
#####################################

# install EPEL repo
yum install http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm -y

# install ganglia monitoring daemon
yum install ganglia ganglia-gmond -y

# modify gmond.conf file
vim /etc/ganglia/gmond.conf

/* removed 'udp_recv_channel' and 'tcp_accept_channel' */
cluster {
  name = "my cluster" /* CHANGED!! */
  owner = "unspecified"
  latlong = "unspecified"
  url = "unspecified"
}

udp_send_channel {
  /* removed the bind_hostname and mcast_join */
  host = 10.104.3.128 /* Meta Node hostname or IP address */
  port = 8649
  ttl = 1
}

# change run level
chkconfig gmond on

# start the monitoring service
service gmond start


## Optional: To create Ganglia Meta Node ##

# change rc.local to set the public IP address
sed -i "s/10.104.3.128/$PUBLIC_IP/" /etc/ganglia/gmond.conf
service gmond restart

# Gotchas
1. To remove dead host from web view, restart gmond and gmetad on Meta Node or Ganglia Server