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Learning OpenStack Networking (Neutron) - Second Edition by James Denton

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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 compute 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.

Using a single controller node

In an environment consisting of a single controller and one or more compute nodes, the controller will likely handle all networking services and other OpenStack services, while the compute nodes ...

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