Requirements
In this deployment scenario youโll once again be using the controller and compute nodes you created in Chapter 5, โFoundations for Deployments.โ We will be creating a 10 GB volume group for use by Cinder on the controller and the minimum specifications defined in that chapter will easily support this.
Select Components
In addition to the foundational tooling, weโll be adding Cinder block storage to your deployment in this scenario. This will extend our very basic installation to have the following services. Their placement is demonstrated in Figure 8.1.
Compute (Nova)
Identity (Keystone)
Networking (Neutron)
Image service (Glance)
Dashboard (Horizon)
Block Storage (Cinder)

Figure 8.1 Components of a two system OpenStack deployment with Cinder block storage