You're clearly running post-stein nova-compute code, because the error is coming from a line that was introduced in train via [1] ([2]). As Matt says, nova's lower constraint for os-traits in train (0.16.0 [3]) includes that trait. Any of the normal packages/distros should be accounting for that properly; if not, we need to know about it. Thanks, efried [1] https://review.opendev.org/#/c/652710/ [2] https://review.opendev.org/#/c/652710/3/nova/virt/driver.py@115 [3] https://opendev.org/openstack/nova/src/branch/stable/train/lower-constraints.txt#L71 On 10/23/19 9:40 AM, Matt Riedemann wrote: > On 10/23/2019 2:03 AM, yu.chengde at 99cloud.net wrote: >> "AttributeError: 'module' object has no attribute >> 'COMPUTE_IMAGE_TYPE_AKI'" > > You need os-traits >= 0.12.0: > > https://review.opendev.org/#/c/648147/ > > Nova's lower-constraints.txt should also specify a version that includes > that if you're honoring the lower-constraints file packaged in the repo. >