Hadoop Node Monitoring

[John Martyniak]

Is there a good solution for Hadoop node monitoring?  I know that  
Cacti and Ganglia are probably the two big ones, but are they the best  
ones to use?  Easiest to setup? Most thorough reporting, etc.

I started to play with Ganglia, and the install is crazy, I am  
installing it on CentOS and having all sorts of troubles.  So any idea  
there would be very helpful.

Thank you,

-John