Nova compute can't register as resource provider

asked 2019-12-09 21:07:28 -0600

Green hat guy gravatar image


I'm following the install guides at (, installing Train over Debian 10.2. I have installed keystone, glance, placement and nova and neutron on my controller node, and nova-compute and neutron on my compute node. I can't launch any instances (No valid host was found. ). nova-compute.log on my compute node has (amongst the stack traces):

Unknown resource class in inventory for resource provider <some uuid="">: No such resource class MEMORY_MB. Error updating resources for node <some node="" name="">: nova.exception.ResourceProviderSyncFailed: Failed to synchronize the placement service with resource provider information supplied by the compute host.

The compute host is visible when I do "openstack resource provider list" and also when I do "nova service-list"

As I understand it, this is a problem with placement, but that's about the limit of my understanding. I've tried to rebuild the placement and nova databases, but this does not help.

Any ideas what might be wrong, or what more information I should be looking for?

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Hello, had simmilar problems before placement became separate - problems were with neutron

shrapneel gravatar imageshrapneel ( 2019-12-11 03:59:47 -0600 )edit