You should first prepare the python environment on your desktop.

Please see: https://creodias.eu/faq-openstack-cli OPENSTACK CLI.

https://creodias.eu/-/how-to-install-openstackclient-linux- HOW TO INSTALL OPENSTACKCLIENT (LINUX)?

https://creodias.eu/-/how-to-install-openstackclient-windows-gitbash-cygwin HOW TO INSTALL OPENSTACKCLIENT (WINDOWS)? GITBASH/CYGWIN

Assume that we created an instance " vm-john-01"

Using CLI you can list the instances in your project.

$ openstack server list
+--------------------------------------+------------+--------+------------------------------------+------------------+-----------+
| ID                                   | Name       | Status | Networks                           | Image            | Flavor    |
+--------------------------------------+------------+--------+------------------------------------+------------------+-----------+
| beec5cf6-6214-4dbc-921b-6bc10fbb33a5 | vm-john-01 | ACTIVE | private_network_02722=192.168.0.11 | Ubuntu 18.04 LTS | eo1.small |
+--------------------------------------+------------+--------+------------------------------------+------------------+-----------+

Now you can create a backup from CLI:

$ openstack server backup create --name backup-01 beec5cf6-6214-4dbc-921b-6bc10fbb33a5

If you want to have control over the number of stored backups, to the above command you should add the --rotate<count> parameter:

$ openstack server backup create --name backup-01 --rotate 2 beec5cf6-6214-4dbc-921b-6bc10fbb33a5

You can see the backup "backup-01" in https://cf2.cloudferro.com/project/images

or in CLI:

$ openstack image list --private
+--------------------------------------+-----------+--------+
| ID                                   | Name      | Status |
+--------------------------------------+-----------+--------+
| cd69dc56-9463-45c7-90dc-a9e549fb6ca1 | backup-01 | active |
+--------------------------------------+-----------+--------+

Now you can download the image to your desktop

$ openstack image save --file backup-on-the-desktop cd69dc56-9463-45c7-90dc-a9e549fb6ca1

After that, you can upload backup file using dashboard:

Go to Project → Compute → Images.

Click '"Create Image".

On this panel you must insert image name, choose backup file and backup format. Next click "Create Image".

You can also use CLI to upload backup file:

openstack image create --file path/to/backup <backup_name>