5.10.3. Ganglia collector [gmond] processes down alert for workers, NameNode, Job­Tracker, HBaseMaster

These alerts check if the Ganglia collector daemons (gmond) on the Ganglia server are running and listening on the network port. Ganglia uses four collector daemons (gmond) on the Ganglia server: one for the Hadoop master daemon and one for aggregated metrics from the group of Hadoop slaves.This alert uses the Nagios check_tcp plugin.