Thanks, Ian. That worked!
1. stop the gmetad in question: gmetadhost% pkill gmetad 2. stop the gmonds on the headnodes. headnode1% pkill gmond 3. rename the rrd directory for the host in question: gmetadhost% mv /var/lib/rrds/MYCLUSTERNAME/old.DOMAIN.TLD /var/lib/rrds/MYCLUSTERNAME/new.DOMAIN.TLD 4. start the gmetad. 5. start the gmonds on the headnodes.
