Multiple endpoints for a single service?

A related question is, does the Keystone service name have any significance other than as a label. For example, could/would you create the following services in Keystone for a Cloud Controller with 2 Compute nodes?

Service Name Service Type
nova_cc nova
nova_c1 nova
nova_c2 nova
glance image
keystone identity

Then would you associate a single endpoint, i.e. each host, to each service?

nova_cc endpoint at 10.10.10.11
nova_c1 endpoint at 10.10.10.12
nova_c2 endpoint at 10.10.10.13
glance endpoint at 10.10.10.14
keystone endpoint at 10.10.10.11

Or would you associate multiple endpoints to one service?

nova nova
glance image
keystone identity

nova endpoint at 10.10.10.11
nova endpoint at 10.10.10.12
nova endpoint at 10.10.10.13
glance endpoint at 10.10.10.14
keystone endpoint at 10.10.10.11

Hi Bill,

Generally speaking, you'd only create a endpoints for any separate instances running the nova-api services. Many deployments run multiple of these (for fault tolerance and redundancy) behind a load balancer (such as an F5 or HAproxy) and define only a single endpoint at the load balancer's relevant IP address/hostname.

The current run of OpenStack clients are not very intelligent, and generally only look for the first publicURL endpoint they can find to interact with the service at hand, so I'd generally recommend this setup with the Essex release.