Need unique names for many small clusters in unicast send-only configuration

[sarnold]

Other requirements include:

• no metric data storage on cluster nodes
• many small clusters sending to dedicated gmond receive host
• nodes cannot be polled from the receiver side

Currently the "node" data from all the different clusters shows up under the one cluster name configured on the receive host. I'd really like to define a unique name for each (small) cluster so they appear that way in the data and the web view, and managing that many ports/configurations as the number of clusters increases is a nightmare.

So I guess I'm looking for the right approach/places in the code to achieve this with something like the override_hostname config option, only for clustername. I scanned through the source code but nothing jumped out at me, so I could really use some pointers/feedback.