Separating services across nodes

Like other OpenStack services, cloud operators can split OpenStack Networking services across multiple nodes. Small deployments may use a single node to host all services, including networking, compute, database, and messaging. Others might find benefit in using a dedicated controller node and a dedicated network node to handle guest traffic routed through software routers and to offload Neutron DHCP and metadata services. The following sections describe a few common service deployment models.