After assigning hosts to their roles, we can configure the hosts' network interfaces. We will assign network interfaces to their appropriate subnets.
Proceed with the following steps:
Select the Hosts tab and click on Assigned.
Mark the checkbox next to the Controller node. Click on Configure Networks, and a pop up will appear. Drag the external network to the appropriate network interface and click on Done.
Mark the checkbox next to the Neutron node; click on Configure Networks; drag the external network to the appropriate network interface; then, drag the Tenant network to an appropriate network interface; and click on Done.
Mark the checkbox next to the Compute nodes, click on Configure Networks; drag the Tenant network to appropriate network interface; and click on Done.
After selecting the nodes, drag and drop the networks to their corresponding network interfaces.