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On 08.05.2013 02:34, Steve Heistand wrote:
>
>> 2013-05-08 02:13:17  WARNING [cinder.scheduler.host_manager] service is
>> down or disabled.
>> 2013-05-08 02:13:17    ERROR [cinder.scheduler.manager] Failed to
>> schedule_create_volume: No valid host was found.
>>
>> I'm running the api and scheduler services on the controller node and
>> the volume service on a compute node. Any ideas why cinder doesn't find
>> a valid host?
>
> Ive found that even small time differences between nodes can cause issues
> like this.

Yep, that was it. Ntpd was running on the systems but apparently it 
couldn't reach any timeservers. I set up another system as the time 
source to synchronize the two nodes to and now the volume is created 
properly.

Thanks!

Regards,
   Dennis