Open Stack

Hi together, 
for test purposes I tried to launch a vm without any networking in 
openstack configured on a multinode environment (setup via devstack: 
controller + cpu node). That means, neither neutron nor nova-network is 
installed on the controller and the cpu node. 
Should I be able to launch an instance with such an configuration, or does 
nova require an networking service to be present?

What I currently see in the cpu logs when launching an instance is a 
endless loop with the content below. Is this an indication that at least 
some networking is required? Or is something else wrong?

Controller is running
key, horizon, g-reg, g-api, n-api, n-cond, n-crt, n-sch, n-novnc, n-xvnc, 
n-cauth, n-obj, c-api, c-sch, c-vol, h-eng, h-api, h-api-cfn,  h-api-cw

CPU is running
n-cpu

screen output of cpu service:

2014-07-22 12:51:04.618 DEBUG nova.openstack.common.periodic_task [-] 
Running periodic task ComputeManager._poll_volume_usage from (pid=5402) 
run_periodic_tasks 
/opt/stack/nova/nova/openstack/common/periodic_task.py:178
2014-07-22 12:51:04.620 DEBUG nova.openstack.common.periodic_task [-] 
Running periodic task ComputeManager._instance_usage_audit from (pid=5402) 
run_periodic_tasks 
/opt/stack/nova/nova/openstack/common/periodic_task.py:178
2014-07-22 12:51:04.621 DEBUG nova.openstack.common.periodic_task [-] 
Running periodic task ComputeManager.update_available_resource from 
(pid=5402) run_periodic_tasks 
/opt/stack/nova/nova/openstack/common/periodic_task.py:178
2014-07-22 12:51:04.623 DEBUG nova.openstack.common.lockutils [-] Got 
semaphore "compute_resources" from (pid=5402) lock 
/opt/stack/nova/nova/openstack/common/lockutils.py:168
2014-07-22 12:51:04.624 DEBUG nova.openstack.common.lockutils [-] Got 
semaphore / lock "update_available_resource" from (pid=5402) inner 
/opt/stack/nova/nova/openstack/common/lockutils.py:248
2014-07-22 12:51:04.625 AUDIT nova.compute.resource_tracker [-] Auditing 
locally available compute resources
2014-07-22 12:51:04.625 DEBUG nova.virt.libvirt.driver [-] Updating host 
stats from (pid=5402) update_status 
/opt/stack/nova/nova/virt/libvirt/driver.py:5247
2014-07-22 12:51:04.672 DEBUG nova.compute.resource_tracker [-] 
Hypervisor: free ram (MB): 1544 from (pid=5402) 
_report_hypervisor_resource_view 
/opt/stack/nova/nova/compute/resource_tracker.py:409
2014-07-22 12:51:04.672 DEBUG nova.compute.resource_tracker [-] 
Hypervisor: free disk (GB): 13 from (pid=5402) 
_report_hypervisor_resource_view 
/opt/stack/nova/nova/compute/resource_tracker.py:410
2014-07-22 12:51:04.673 DEBUG nova.compute.resource_tracker [-] 
Hypervisor: free VCPUs: 2 from (pid=5402) _report_hypervisor_resource_view 
/opt/stack/nova/nova/compute/resource_tracker.py:415
2014-07-22 12:51:04.673 DEBUG nova.compute.resource_tracker [-] 
Hypervisor: assignable PCI devices: [] from (pid=5402) 
_report_hypervisor_resource_view 
/opt/stack/nova/nova/compute/resource_tracker.py:422
2014-07-22 12:51:04.712 AUDIT nova.compute.resource_tracker [-] Free ram 
(MB): 1377
2014-07-22 12:51:04.714 AUDIT nova.compute.resource_tracker [-] Free disk 
(GB): 17
2014-07-22 12:51:04.715 AUDIT nova.compute.resource_tracker [-] Free 
VCPUS: 1
2014-07-22 12:51:04.784 INFO nova.compute.resource_tracker [-] 
Compute_service record updated for devstack-compute:devstack-compute
2014-07-22 12:51:04.785 DEBUG nova.openstack.common.lockutils [-] 
Semaphore / lock released "update_available_resource" from (pid=5402) 
inner /opt/stack/nova/nova/openstack/common/lockutils.py:252
2014-07-22 12:51:04.800 DEBUG nova.openstack.common.periodic_task [-] 
Running periodic task ComputeManager._poll_rebooting_instances from 
(pid=5402) run_periodic_tasks 
/opt/stack/nova/nova/openstack/common/periodic_task.py:178
2014-07-22 12:51:04.802 DEBUG nova.openstack.common.periodic_task [-] 
Running periodic task ComputeManager._reclaim_queued_deletes from 
(pid=5402) run_periodic_tasks 
/opt/stack/nova/nova/openstack/common/periodic_task.py:178
2014-07-22 12:51:04.803 DEBUG nova.compute.manager [-] 
CONF.reclaim_instance_interval <= 0, skipping... from (pid=5402) 
_reclaim_queued_deletes /opt/stack/nova/nova/compute/manager.py:5364
2014-07-22 12:51:04.804 DEBUG nova.openstack.common.periodic_task [-] 
Running periodic task ComputeManager._poll_unconfirmed_resizes from 
(pid=5402) run_periodic_tasks 
/opt/stack/nova/nova/openstack/common/periodic_task.py:178
2014-07-22 12:51:04.805 DEBUG nova.openstack.common.periodic_task [-] 
Running periodic task ComputeManager._poll_rescued_instances from 
(pid=5402) run_periodic_tasks 
/opt/stack/nova/nova/openstack/common/periodic_task.py:178
2014-07-22 12:51:04.805 DEBUG nova.openstack.common.periodic_task [-] 
Running periodic task ComputeManager._check_instance_build_time from 
(pid=5402) run_periodic_tasks 
/opt/stack/nova/nova/openstack/common/periodic_task.py:178
2014-07-22 12:51:04.806 DEBUG nova.openstack.common.periodic_task [-] 
Running periodic task ComputeManager._heal_instance_info_cache from 
(pid=5402) run_periodic_tasks 
/opt/stack/nova/nova/openstack/common/periodic_task.py:178
2014-07-22 12:51:04.806 DEBUG nova.compute.manager [-] Starting heal 
instance info cache from (pid=5402) _heal_instance_info_cache 
/opt/stack/nova/nova/compute/manager.py:4789
2014-07-22 12:51:04.806 DEBUG nova.compute.manager [-] Rebuilding the list 
of instances to heal from (pid=5402) _heal_instance_info_cache 
/opt/stack/nova/nova/compute/manager.py:4793
2014-07-22 12:51:04.828 DEBUG nova.compute.manager [-] [instance: 
ec79df2f-477c-4fbe-85ed-ef7eeed83d43] Skipping network cache update for 
instance because it is Building. from (pid=5402) _heal_instance_info_cache 
/opt/stack/nova/nova/compute/manager.py:4803
2014-07-22 12:51:04.829 DEBUG nova.compute.manager [-] Didn't find any 
instances for network info cache update. from (pid=5402) 
_heal_instance_info_cache /opt/stack/nova/nova/compute/manager.py:4855
2014-07-22 12:51:04.830 DEBUG nova.openstack.common.loopingcall [-] 
Dynamic looping call sleeping for 56.43 seconds from (pid=5402) _inner 
/opt/stack/nova/nova/openstack/common/loopingcall.py:132



Thanks, 
Andreas