Ganglia seems to be a promising tool to represent visually what is happening on my cluster.
Is there any way I could get an invitation to clusteradmin.blogspot? I am very interested in learning more about the 'Ganglia overview.'
A short Ganglia overview for sysadmins new to Linux clusters.
If somebody is interested I made a general overview of cluster monitoring topic with Ganglia as a main example (including adding your own metrics).
Quick read + links for first-timers.
An open, cross-platform journaling program.
A scientific plotting package.