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Vahid Alimohamadi
Asked: 2021-09-26 05:59:35 +0800 CST

auto cinder volume when creating nova instance via REST API

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When i use horizon to create a nova instance, it is creating volume based on selected flavor and image. But when i determine flavorRef and ImageRef via rest api endpoint, the created instance has no volume!

Have to create a volume and attach it manually?

openstack cinder nova

1 Answers

  1. The default in horizon dashboard is indeed to create a new volume when creating a new instance. The "yes" button is preselected in the "source" tab. If you want to create a volume via CLI you'll need to also provide the --block-device-mapping argument, see openstack help server create for more details. I haven't tried that via API directly so I'm not sure if this is applicable for creating instances via API.

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