Cloned from launchpad blueprint https://blueprints.launchpad.net/nova/+spec/no-flavors.

Description:

Flavors present a somewhat administratively intensive approach to specifying an instance's technical specifications. I'd like to propose an alternative approach which no longer uses flavors and instead uses a predefined set of increments of each specification. In other words, instead of a list of options the user selects the specific vcpu, ram and storage amounts. In Horizon this can be presented on a sliding scale or as a set of drop-downs (one for vcpu's, one for ram amount, one for disk space). In the command-line the user can simply specify how much ram, disk and how many vcpu's are required. Instead of flavors the administrator then simply sets limits.

Specification URL (additional information):

https://wiki.openstack.org/wiki/DynamicFlavors