Please help,I struck in the problem for a long time. My topology is Cloud controller : Public IP : 192.168.4.75 Private IP : 10.0.1.20 Installed package:all nova-package Compute node : Public IP : 192.168.4.72 Private IP : 10.0.1.19 Installed package:nova-compute,nova-network

Problem: can't launch instance in compute node ,error in Scheduling state but in cloud controller can launch instance perfectly.

root@devstack:~# nova-manage service list 2013-01-14 14:05:43 DEBUG nova.utils [req-deae5d4a-29eb-4751-ae19-6bc83f3dd7f3 None None] backend <module 'nova.db.sqlalchemy.api'="" from="" '="" usr="" lib="" python2.7="" dist-packages="" nova="" db="" sqlalchemy="" api.pyc'=""> from (pid=20913) __get_backend /usr/lib/python2.7/dist-packages/nova/utils.py:658 Binary Host Zone Status State Updated_At nova-compute devstack nova enabled :-) 2013-01-14 07:05:37 nova-cert devstack nova enabled :-) 2013-01-14 07:05:34 nova-consoleauth devstack nova enabled :-) 2013-01-14 07:05:34 nova-console devstack nova enabled :-) 2013-01-14 07:05:34 nova-scheduler devstack nova enabled :-) 2013-01-14 07:05:36 nova-volume devstack nova enabled XXX 2013-01-11 09:15:15 nova-network devstack nova enabled :-) 2013-01-14 07:05:33 nova-compute openstackagent nova enabled :-) 2013-01-14 07:05:41 nova-network openstackagent nova enabled XXX 2013-01-14 06:43:05

this is a log of compute node (Nova-compute) 2013-01-14 14:04:22 DEBUG nova.manager [-] Running periodic task ComputeManager._poll_unconfirmed_resizes from (pid=24366) periodic_tasks /usr/lib/python2.7/dist-packages/nova/manager.py:152 2013-01-14 14:04:24 DEBUG nova.rpc.amqp [-] received {u'_context_roles': [u'admin'], u'_context_request_id': u'req-5a86fbbe-f7d2-47dc-96ad-676d2603448c', u'_context_read_deleted': u'no', u'args': {u'instance_uuid': u'4a299e4d-20c6-43c2-9b0f-250449fa12d6', u'is_first_time': True, u'filter_properties': {u'scheduler_hints': {}}, u'admin_password': '<sanitized>', u'injected_files': [], u'requested_networks': None}, u'_context_auth_token': '<sanitized>', u'_context_is_admin': True, u'_context_project_id': u'c3ef27e67c304db7b1223bd7b745d105', u'_context_timestamp': u'2013-01-14T07:04:11.821966', u'_context_user_id': u'dc9d27f019124c66a8a979d5d17deaf7', u'method': u'run_instance', u'_context_remote_address': u'127.0.0.1'} from (pid=24366) _safe_log /usr/lib/python2.7/dist-packages/nova/rpc/common.py:160 2013-01-14 14:04:24 DEBUG nova.rpc.amqp [req-5a86fbbe-f7d2-47dc-96ad-676d2603448c dc9d27f019124c66a8a979d5d17deaf7 c3ef27e67c304db7b1223bd7b745d105] unpacked context: {'user_id': u'dc9d27f019124c66a8a979d5d17deaf7', 'roles': [u'admin'], 'timestamp': '2013-01-14T07:04:11.821966', 'auth_token': '<sanitized>', 'remote_address': u'127.0.0.1', 'is_admin': True, 'request_id': u'req-5a86fbbe-f7d2-47dc-96ad-676d2603448c', 'project_id': u'c3ef27e67c304db7b1223bd7b745d105', 'read_deleted': u'no'} from (pid=24366) _safe_log /usr/lib/python2.7/dist-packages/nova/rpc/common.py:160 2013-01-14 14:04:24 DEBUG nova.utils [req-5a86fbbe-f7d2-47dc-96ad-676d2603448c dc9d27f019124c66a8a979d5d17deaf7 c3ef27e67c304db7b1223bd7b745d105] Attempting to grab semaphore "4a299e4d-20c6-43c2-9b0f-250449fa12d6" for method "do_run_instance"... from (pid=24366) inner /usr/lib/python2.7/dist-packages/nova/utils.py:927 2013-01-14 14:04:24 DEBUG nova.utils [req-5a86fbbe-f7d2-47dc-96ad-676d2603448c dc9d27f019124c66a8a979d5d17deaf7 c3ef27e67c304db7b1223bd7b745d105] Got semaphore "4a299e4d-20c6-43c2-9b0f-250449fa12d6" for method "do_run_instance"... from (pid=24366) inner /usr/lib/python2.7/dist-packages/nova/utils.py:931 2013-01-14 14:04:31 ERROR nova.rpc.amqp [req-5a86fbbe-f7d2-47dc-96ad-676d2603448c dc9d27f019124c66a8a979d5d17deaf7 c3ef27e67c304db7b1223bd7b745d105] Exception during message handling 2013-01-14 14:04:31 TRACE nova.rpc.amqp Traceback (most recent call last): 2013-01-14 14:04:31 TRACE nova.rpc.amqp File "/usr/lib/python2.7/dist-packages/nova/rpc/amqp.py", line 253, in _process_data 2013-01-14 14:04:31 TRACE nova.rpc.amqp rval = node_func(context=ctxt, *node_args) 2013-01-14 14:04:31 ... (more)