[Linux-cluster] Monitoring Tools for RHEL Clusters

[RR]

Hello all,

just wanted to throw this out for advice and ideas and see what works
in the field. Does anyone on the list use any particular package/suite
for monitoring of their servers clustered together with RHCS? Most of
the open-source cluster mgmt suites such as OSCAR, ROCKS etc. come
with monitoring packages such as Ganglia, Nagios etc. Does anyone have
any particular preferance of one over the other and how well these
tools work in clusters that use RHCS? Does RedHat have an open-source
package for this?

Any comments, ideas, advice?

Cheers
\R