Domas Mituzas wrote:
Ganglia is for performance trends. Nagios is for monitoring events.
The metric collection changes in Ganglia 3.0.0 were made with the intention of adding a monitoring/alert mechanism to Ganglia mainline in the short-term future. But if you need a solution now, or plan to monitor events that Ganglia doesn't know about, then yes, Nagios makes good sense.