Learning OpenStack Networking - Third Edition

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 strictly provide compute resources.

The following diagram demonstrates a controller node hosting all OpenStack management and networking services where the Neutron layer 3 agent is not utilized. Two physical interfaces are used to separate management (control plane) and instance (data plane) network traffic:

Figure 1.3

The preceding diagram reflects the use of a single combined controller/network node and one or more ...