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VM flavors

Virtual machine flavors allow you to choose the size of your virtual machine. The selection available can be shown using

$ openstack flavor list
+-------+--------------+------+------+-----------+------+-------+
| ID    | Name         | RAM  | Disk | Ephemeral | Swap | VCPUs |
+-------+--------------+------+------+-----------+------+-------+
| 17895 | m2.small     | 1875 |   10 |         0 |      |     1 |
| 38242 | m2.medium    | 3750 |   20 |         0 |      |     2 |
| 12076 | m2.large     | 7500 |   40 |         0 |      |     4 |
+-------+--------------+------+------+-----------+------+-------+

The important fields are

Field Description
RAM Memory size in MB
Disk Size of disk in GB. 0 means that the disk is the same size as the image
Ephemeral Size of a second disk. See the ephemeral disks section for more details
Swap Size of swap space. No value means no swap volume is defined
VCPUs Number of virtual cores

Additional flavors, e.g. more cores/RAM, are available upon request (and approval). Please open a ticket to the cloud team via opening a service desk ticket.

When checking the instance details (openstack server show ...) some instances can show a flavor ID (ex: 12345) instead of the flavor name. This is because the flavor used by the instance was meanwhile deprecated by the Cloud Team and cannot be used anymore.


Last update: March 11, 2021