Comment 1 for bug 1766372

The flavor for the proxy VM is hardcoded and set to

                proxy_flavor = {
                    "vcpus": 1,
                    "ram": 2048,
                    "disk": 0,
                    "ephemeral": 0
                }

This should be sufficient for the VM Image provided with kloudbuster (we never had any issue running this on multiple openstack pods).
A disk of zero means it will create a root disk with the default size specified by the image and sufficient for it s need (not necessarily 1GB),

Your log above seems to be related to a manual launch of the VM image?

Can you provide the exact/complete output when running kloudbuster?