Open Stack

I am following the "official" installation guide to build two separate lab
environments using Havana with Neutron, each with a three-node
configuration: controller, network, and compute.  One environment runs on
Ubuntu 12.04 LTS and the other on Scientific Linux 6.4.  In both
environments, the network node contains the "br-ex" interface which handles
external connectivity for instances.

During installation of a package, Ubuntu automatically configures daemons
included with it to start on boot.  For example, installing the
"neutron-server" package causes the neutron-server daemon included with it
to start on boot.  On the other hand, RHEL and derivatives such as
Scientific Linux require issuing "chkconfig <daemon> on" to make a
particular daemon start on boot.

The Ubuntu installation guide for Neutron on a dedicated network node[1]
tells me to restart the neutron-server daemon after completing
configuration.  It will also automatically start on boot.  On the other
hand, the same chapter in the RHEL installation guide[2] tells me to
restart the neutron-server daemon, but excludes it from the list of daemons
configured to start on boot via chkconfig.  When installing Neutron on a
dedicated controller node, both variants of the guide[3,4] appear to start
the neutron-server daemon at boot.  After completing the rest of the
installation process, the only difference between the environments is
whether or not the neutron-server daemon runs on the network node.  Both
environments seem to function normally.  Does the neutron-server daemon
need to run on the network node in addition to the controller node?  I
don't think so because Keystone only contains an endpoint for Neutron on
the controller node.  Can anyone with more Neutron experience confirm my
suspicion?

Thanks,
Matt

[1]
http://docs.openstack.org/trunk/install-guide/install/apt/content/neutron-install.dedicated-network-node.html
[2]
http://docs.openstack.org/trunk/install-guide/install/yum/content/neutron-install.dedicated-network-node.html
[3]
http://docs.openstack.org/trunk/install-guide/install/apt/content/install-neutron.dedicated-controller-node.html
[4]
http://docs.openstack.org/trunk/install-guide/install/yum/content/install-neutron.dedicated-controller-node.html
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