In this installation, the various services that make up OpenStack Networking will be installed on the controller node rather than on a dedicated networking node. However, some Neutron configuration files must exist on all nodes, and the configuration files can only be installed via packages.
To install Neutron services, issue the following command on all nodes:
# yum -y install openstack-neutron
As a result, the following services will be installed in
neutron-server neutron-dhcp-agent neutron-metadata-agent neutron-l3-agent neutron-lbaas-agent
In this installation, the services mentioned will run only on the controller node despite them being installed across all nodes.