Hello guys, I am dealing with one issue and that is a question *What is the right approach for updating openstack glance images?*
When new version of cloud image comes out, for example Ubuntu cloud images <https://cloud-images.ubuntu.com/xenial/current/>, I want to update old openstack glance image with that new cloud image (As currently urged with Spectre mitigation update). I see several possibilities: 1. Create new image with different name. > > Downside is that I will have many images of same distribution and > release with different updates/kernel and tenants wouldn't know which to > use. Also there will be additional disk space used. > 2. Create new image with same name as old image and delete the old one (I think a lot of people is doing it like that). > Downside is that instances which used the old image will have empty > image name in horizon and rebuild or other operations may not be working. > Basically the `*image_ref`* column in nova.instances is pointing to > UUID of old image and all operations with this UUID will potentially fail. > 3. Create new image with different name but hide old image by making it private and with no members. > Hacky way and other issues us above. > 4. Create new image, delete the old one and change column `*image_ref*` in nova database table instances using the old one to new one. > Hacky way and possible negative impact. > Also notice that API function for glance upload <https://developer.openstack.org/api-ref/image/v2/index.html#upload-binary-image-data> is working only for images with status *queued* and cannot be used. So is there a preferred way to update glance image to new or is this still an open and not addressed issue? I found similar openstack mailing list conversation in this link <https://lists.gt.net/openstack/operators/41507>, but no systematic answer was there so I am asking again here after 3 years. Thank you forward for your shared insight, advices and experiences.
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