title: Ganglia data isn't stored as expected
body: <p>I am trying to setup ganglia in order to set up monitoring for spark on our cluster.
  So far I have installed gmond&amp;gmetad on my master server, and gmond on one of my slaves.
  My problem is that I can only see one node on my ganglia web frontend.</p>
  
  <p>I have checked the /var/lib/ganglia/rrds folder, where the rrd files are being created, and I see that both servers contain folders by the same name - ip-10-0-0-58.ec2.internal.
  How can I instruct Ganglia to write its data to different folders, in order to differentiate between the nodes?</p>
  
  <p>If any info is missing, I will gladly supply it.
  Thanks for the help,
  Yaron.</p>