In OpenStack, a flavor defines the compute, memory, and storage
capacity of a virtual server, also known as an instance. As an
administrative user, you can create and delete flavors and update their
metadata.

As of Newton, there are no default flavors. The following table lists
the default flavors for Mitaka and earlier.

Create flavors

1. Log in to the Dashboard and select the admin project from the
   drop-down list.

2. In the Admin tab, open the Compute tab and click
   the Flavors
   category.

3. Click Create Flavor.

4. In the Create Flavor window, enter or select the
   parameters for the flavor in the Flavor Information tab.

   

   Name	Enter the flavor name.
   ID	Unique ID (integer or UUID) for the new flavor. If specifying ‘auto’, a UUID will be automatically generated.
   VCPUs	Enter the number of virtual CPUs to use.
   RAM (MB)	Enter the amount of RAM to use, in megabytes.
   Root Disk (GB)	Enter the amount of disk space in gigabytes to use for the root (/) partition.
   Ephemeral Disk (GB)	Enter the amount of disk space in gigabytes to use for the ephemeral partition. If unspecified, the value is 0 by default. Ephemeral disks offer machine local disk storage linked to the lifecycle of a VM instance. When a VM is terminated, all data on the ephemeral disk is lost. Ephemeral disks are not included in any snapshots.
   Swap Disk (MB)	Enter the amount of swap space (in megabytes) to use. If unspecified, the default is 0.
   RX/TX Factor	Optional property allows servers with a different bandwidth to be created with the RX/TX Factor. The default value is 1. That is, the new bandwidth is the same as that of the attached network.

5. In the Flavor Access tab, you can control access to the
   flavor by moving projects from the All Projects column to the Selected Projects
   column.

   Only projects in the Selected Projects column can use the flavor. If
   there are no projects in the right column, all projects can use the
   flavor.

6. Click Create Flavor.

Update Metadata

1. Log in to the Dashboard and select the admin project from the
   drop-down list.

2. In the Admin tab, open the Compute tab and click
   the Flavors
   category.

3. Select the flavor that you want to update. In the drop-down list,
   click Update Metadata or click No or Yes in the Metadata
   column.

4. In the Update Flavor Metadata window, you can customize
   some metadata keys, then add it to this flavor and set them
   values.

5. Click Save.

   Optional metadata keys

   CPU limits	quota:cpu_shares
   	quota:cpu_period
   	quota:cpu_limit
   	quota:cpu_reservation
   	quota:cpu_quota
   Disk tuning	quota:disk_read_bytes_sec
   	quota:disk_read_iops_sec
   	quota:disk_write_bytes_sec
   	quota:disk_write_iops_sec
   	quota:disk_total_bytes_sec
   	quota:disk_total_iops_sec
   Bandwidth I/O	quota:vif_inbound_average
   	quota:vif_inbound_burst
   	quota:vif_inbound_peak
   	quota:vif_outbound_average
   	quota:vif_outbound_burst
   	quota:vif_outbound_peak
   Watchdog behavior	hw:watchdog_action
   Random-number generator	hw_rng:allowed
   	hw_rng:rate_bytes
   	hw_rng:rate_period

   For information about supporting metadata keys, see the the Compute
   service documentation.

Delete flavors

1. Log in to the Dashboard and select the admin project from the
   drop-down list.
2. In the Admin
   tab, open the Compute tab and click the Flavors category.
3. Select the flavors that you want to delete.
4. Click Delete Flavors.
5. In the Confirm Delete Flavors window, click Delete Flavors to
   confirm the deletion. You cannot undo this action.