Creating a flavor

Before Nova can start instances, it first needs to know what resources should be assigned to those instances. The way Nova handles resource assignments is to define flavors. A flavor specifies the number of vCPUs, RAM, and the disk to assign to an instance.

Getting ready

To create a new flavor, you will need the following:

• The openstack command-line client

• The openrc file containing appropriate credentials

• The name, vCPU, RAM, and disk values for the new flavor

The flavor we will create in this example will have the following attributes:

• Flavor name: openstack.cookbook

• vCPU: 1

• Ram: 512 MB

• Disk: 5 GB

• Visibility: Public

How to do it…

The following commands are used to create a new flavor:

1. First, list the available flavors already configured in our environment with the following command:

   openstack flavor list
   

   This will bring back an output like the following:

   

2. Create the flavor with our given attributes:

   openstack flavor create
       --vcpus 1
       --ram 512
       --disk 5
       --public
       openstack...