Launching instances from SUSE OpenStack 8 gives an error “Exceeded maximum number of retries. Exceeded max scheduling attempts 3 for instance fe5dfcc2-d9e4-4a78-b960-45ca288d5bb3. Last exception: ‘NoneType’ object has no attribute ‘getitem’”
first you should try to find out why the instances are failing. Check your log files for nova (conductor, scheduler, compute), glance and cinder, depending on how your instances are built. It sounds like the scheduler is not able to find a host providing the resources that are required by the image and flavor.