Chapter 2. Top New Features

Monolithic templates have been decomposed into a set of multiple smaller discrete templates, each representing a composable service. These can be deployed on a standalone node, or combined with other services in the form of Custom Roles.

Note the following guidelines and limitations for the composable node architecture:

For more information on supported architecture for custom roles and composable services, see Composable Services and Custom Roles in the Advanced Overcloud Customization guide.

Director can now be managed using a Graphical User Interface, which includes integrated templates, a built-in workflow, and pre- and post-flight validation checking. You use the GUI to create Role Assignments and perform node registration and introspection.

The director workflow now includes a clear separation of the hardware deployment phase. This delineates where a user registers hardware to the inventory, uploads images, and defines hardware profiles. This phase is completed by deploying a given image to a specific hardware node. This separation allows you to deploy Red Hat Enterprise Linux onto a hardware node and hand it over to a user.