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I use quantum as my nova-network in ubuntu 12.04LTS, there are two problem:

1: it can show fix ip, but in vm, the network interfaces have no ips. Using
"dhclient eth0" does not make sense. Using "ifconfig eth0 inet xxx netmask
xxx" can work.

2: when I accociate floating ip to a vm , it show error, the nova-network
log is below:

2012-05-03 17:51:18 DEBUG nova.rpc.amqp
[req-f0a4fffa-d6fa-4ab6-9985-1bc4e248edf7 538eac0210274847a183a988f57fbd59
57eb0d7989c7457aa3818998fbf9a4dc] unpacked context: {'user_id':
u'538eac0210274847a183a988f57fbd59', 'roles': [u'Member'], 'timestamp':
'2012-05-03T09:51:18.403089', 'auth_token': '<SANITIZED>',
'remote_address': u'127.0.0.1', 'is_admin': False, 'request_id':
u'req-f0a4fffa-d6fa-4ab6-9985-1bc4e248edf7', 'project_id':
u'57eb0d7989c7457aa3818998fbf9a4dc', 'read_deleted': u'no'} from (pid=3791)
_safe_log /usr/lib/python2.7/dist-packages/nova/rpc/common.py:160
2012-05-03 17:51:18 DEBUG nova.rpc.amqp [-] received {u'_context_roles':
[u'Member'], u'_msg_id': u'c4056c388c26498b83a3909d33e6d4ce',
u'_context_read_deleted': u'no', u'_context_request_id':
u'req-ec319cc9-245d-4808-991b-a00b417b923e', u'args': {u'id': u'1'},
u'_context_auth_token': '<SANITIZED>', u'_context_is_admin': False,
u'_context_project_id': u'57eb0d7989c7457aa3818998fbf9a4dc',
u'_context_timestamp': u'2012-05-03T09:51:18.787337', u'_context_user_id':
u'538eac0210274847a183a988f57fbd59', u'method': u'get_floating_ip',
u'_context_remote_address': u'127.0.0.1'} from (pid=3791) _safe_log
/usr/lib/python2.7/dist-packages/nova/rpc/common.py:160
2012-05-03 17:51:18 DEBUG nova.rpc.amqp
[req-ec319cc9-245d-4808-991b-a00b417b923e 538eac0210274847a183a988f57fbd59
57eb0d7989c7457aa3818998fbf9a4dc] unpacked context: {'user_id':
u'538eac0210274847a183a988f57fbd59', 'roles': [u'Member'], 'timestamp':
'2012-05-03T09:51:18.787337', 'auth_token': '<SANITIZED>',
'remote_address': u'127.0.0.1', 'is_admin': False, 'request_id':
u'req-ec319cc9-245d-4808-991b-a00b417b923e', 'project_id':
u'57eb0d7989c7457aa3818998fbf9a4dc', 'read_deleted': u'no'} from (pid=3791)
_safe_log /usr/lib/python2.7/dist-packages/nova/rpc/common.py:160
2012-05-03 17:51:18 DEBUG nova.rpc.amqp [-] received {u'_context_roles':
[u'Member', u'admin'], u'_msg_id': u'248d0e0cbff14809978e1b0333621772',
u'_context_read_deleted': u'no', u'_context_request_id':
u'req-ac208065-fc2e-4c3b-8fd5-d3661ca33ce1', u'args': {u'instance_id': 5,
u'instance_uuid': u'57f9432f-2177-4635-9692-645ed5a5f2f7', u'host':
u'cloud', u'project_id': u'57eb0d7989c7457aa3818998fbf9a4dc',
u'rxtx_factor': 1.0}, u'_context_auth_token': '<SANITIZED>',
u'_context_is_admin': True, u'_context_project_id':
u'57eb0d7989c7457aa3818998fbf9a4dc', u'_context_timestamp':
u'2012-05-03T09:51:18.825231', u'_context_user_id':
u'538eac0210274847a183a988f57fbd59', u'method': u'get_instance_nw_info',
u'_context_remote_address': u'127.0.0.1'} from (pid=3791) _safe_log
/usr/lib/python2.7/dist-packages/nova/rpc/common.py:160
2012-05-03 17:51:18 DEBUG nova.rpc.amqp
[req-ac208065-fc2e-4c3b-8fd5-d3661ca33ce1 538eac0210274847a183a988f57fbd59
57eb0d7989c7457aa3818998fbf9a4dc] unpacked context: {'user_id':
u'538eac0210274847a183a988f57fbd59', 'roles': [u'Member', u'admin'],
'timestamp': '2012-05-03T09:51:18.825231', 'auth_token': '<SANITIZED>',
'remote_address': u'127.0.0.1', 'is_admin': True, 'request_id':
u'req-ac208065-fc2e-4c3b-8fd5-d3661ca33ce1', 'project_id':
u'57eb0d7989c7457aa3818998fbf9a4dc', 'read_deleted': u'no'} from (pid=3791)
_safe_log /usr/lib/python2.7/dist-packages/nova/rpc/common.py:160
2012-05-03 17:51:18 DEBUG nova.utils
[req-ac208065-fc2e-4c3b-8fd5-d3661ca33ce1 538eac0210274847a183a988f57fbd59
57eb0d7989c7457aa3818998fbf9a4dc] Attempting to grab semaphore "get_dhcp"
for method "_get_dhcp_ip"... from (pid=3791) inner
/usr/lib/python2.7/dist-packages/nova/utils.py:927
2012-05-03 17:51:18 DEBUG nova.utils
[req-ac208065-fc2e-4c3b-8fd5-d3661ca33ce1 538eac0210274847a183a988f57fbd59
57eb0d7989c7457aa3818998fbf9a4dc] Got semaphore "get_dhcp" for method
"_get_dhcp_ip"... from (pid=3791) inner
/usr/lib/python2.7/dist-packages/nova/utils.py:931
2012-05-03 17:51:18 DEBUG nova.utils
[req-ac208065-fc2e-4c3b-8fd5-d3661ca33ce1 538eac0210274847a183a988f57fbd59
57eb0d7989c7457aa3818998fbf9a4dc] Attempting to grab semaphore "get_dhcp"
for method "_get_dhcp_ip"... from (pid=3791) inner
/usr/lib/python2.7/dist-packages/nova/utils.py:927
2012-05-03 17:51:18 DEBUG nova.utils
[req-ac208065-fc2e-4c3b-8fd5-d3661ca33ce1 538eac0210274847a183a988f57fbd59
57eb0d7989c7457aa3818998fbf9a4dc] Got semaphore "get_dhcp" for method
"_get_dhcp_ip"... from (pid=3791) inner
/usr/lib/python2.7/dist-packages/nova/utils.py:931
2012-05-03 17:51:18 DEBUG nova.utils
[req-ac208065-fc2e-4c3b-8fd5-d3661ca33ce1 538eac0210274847a183a988f57fbd59
57eb0d7989c7457aa3818998fbf9a4dc] Attempting to grab semaphore "get_dhcp"
for method "_get_dhcp_ip"... from (pid=3791) inner
/usr/lib/python2.7/dist-packages/nova/utils.py:927
2012-05-03 17:51:18 DEBUG nova.utils
[req-ac208065-fc2e-4c3b-8fd5-d3661ca33ce1 538eac0210274847a183a988f57fbd59
57eb0d7989c7457aa3818998fbf9a4dc] Got semaphore "get_dhcp" for method
"_get_dhcp_ip"... from (pid=3791) inner
/usr/lib/python2.7/dist-packages/nova/utils.py:931
2012-05-03 17:51:18 DEBUG nova.utils
[req-ac208065-fc2e-4c3b-8fd5-d3661ca33ce1 538eac0210274847a183a988f57fbd59
57eb0d7989c7457aa3818998fbf9a4dc] Attempting to grab semaphore "get_dhcp"
for method "_get_dhcp_ip"... from (pid=3791) inner
/usr/lib/python2.7/dist-packages/nova/utils.py:927
2012-05-03 17:51:18 DEBUG nova.utils
[req-ac208065-fc2e-4c3b-8fd5-d3661ca33ce1 538eac0210274847a183a988f57fbd59
57eb0d7989c7457aa3818998fbf9a4dc] Got semaphore "get_dhcp" for method
"_get_dhcp_ip"... from (pid=3791) inner
/usr/lib/python2.7/dist-packages/nova/utils.py:931
2012-05-03 17:51:18 DEBUG nova.rpc.amqp [-] received {u'_context_roles':
[u'Member', u'admin'], u'_msg_id': u'503ee115b95244a692f959b7d1fdaa05',
u'_context_read_deleted': u'no', u'_context_request_id':
u'req-ac208065-fc2e-4c3b-8fd5-d3661ca33ce1', u'args': {u'fixed_address':
u'10.0.2.5', u'floating_address': u'172.16.0.169', u'affect_auto_assigned':
False}, u'_context_auth_token': '<SANITIZED>', u'_context_is_admin': False,
u'_context_project_id': u'57eb0d7989c7457aa3818998fbf9a4dc',
u'_context_timestamp': u'2012-05-03T09:51:18.825231', u'_context_user_id':
u'538eac0210274847a183a988f57fbd59', u'method': u'associate_floating_ip',
u'_context_remote_address': u'127.0.0.1'} from (pid=3791) _safe_log
/usr/lib/python2.7/dist-packages/nova/rpc/common.py:160
2012-05-03 17:51:18 DEBUG nova.rpc.amqp
[req-ac208065-fc2e-4c3b-8fd5-d3661ca33ce1 538eac0210274847a183a988f57fbd59
57eb0d7989c7457aa3818998fbf9a4dc] unpacked context: {'user_id':
u'538eac0210274847a183a988f57fbd59', 'roles': [u'Member', u'admin'],
'timestamp': '2012-05-03T09:51:18.825231', 'auth_token': '<SANITIZED>',
'remote_address': u'127.0.0.1', 'is_admin': False, 'request_id':
u'req-ac208065-fc2e-4c3b-8fd5-d3661ca33ce1', 'project_id':
u'57eb0d7989c7457aa3818998fbf9a4dc', 'read_deleted': u'no'} from (pid=3791)
_safe_log /usr/lib/python2.7/dist-packages/nova/rpc/common.py:160
2012-05-03 17:51:18 ERROR nova.rpc.amqp
[req-ac208065-fc2e-4c3b-8fd5-d3661ca33ce1 538eac0210274847a183a988f57fbd59
57eb0d7989c7457aa3818998fbf9a4dc] Exception during message handling
2012-05-03 17:51:18 TRACE nova.rpc.amqp Traceback (most recent call last):
2012-05-03 17:51:18 TRACE nova.rpc.amqp   File
"/usr/lib/python2.7/dist-packages/nova/rpc/amqp.py", line 252, in
_process_data
2012-05-03 17:51:18 TRACE nova.rpc.amqp     rval = node_func(context=ctxt,
**node_args)
2012-05-03 17:51:18 TRACE nova.rpc.amqp   File
"/usr/lib/python2.7/dist-packages/nova/network/manager.py", line 258, in
wrapped
2012-05-03 17:51:18 TRACE nova.rpc.amqp     return func(self, context,
*args, **kwargs)
2012-05-03 17:51:18 TRACE nova.rpc.amqp   File
"/usr/lib/python2.7/dist-packages/nova/network/manager.py", line 459, in
associate_floating_ip
2012-05-03 17:51:18 TRACE nova.rpc.amqp     fixed_ip['network_id'])
2012-05-03 17:51:18 TRACE nova.rpc.amqp   File
"/usr/lib/python2.7/dist-packages/nova/network/manager.py", line 1549, in
_get_network_by_id
2012-05-03 17:51:18 TRACE nova.rpc.amqp     return
self.db.network_get(context, network_id)
2012-05-03 17:51:18 TRACE nova.rpc.amqp   File
"/usr/lib/python2.7/dist-packages/nova/db/api.py", line 755, in network_get
2012-05-03 17:51:18 TRACE nova.rpc.amqp     return
IMPL.network_get(context, network_id)
2012-05-03 17:51:18 TRACE nova.rpc.amqp   File
"/usr/lib/python2.7/dist-packages/nova/db/sqlalchemy/api.py", line 120, in
wrapper
2012-05-03 17:51:18 TRACE nova.rpc.amqp     return f(*args, **kwargs)
2012-05-03 17:51:18 TRACE nova.rpc.amqp   File
"/usr/lib/python2.7/dist-packages/nova/db/sqlalchemy/api.py", line 1920, in
network_get
2012-05-03 17:51:18 TRACE nova.rpc.amqp     raise
exception.NetworkNotFound(network_id=network_id)
2012-05-03 17:51:18 TRACE nova.rpc.amqp NetworkNotFound: Network 2 could
not be found.
2012-05-03 17:51:18 TRACE nova.rpc.amqp
2012-05-03 17:51:18 ERROR nova.rpc.amqp
[req-ac208065-fc2e-4c3b-8fd5-d3661ca33ce1 538eac0210274847a183a988f57fbd59
57eb0d7989c7457aa3818998fbf9a4dc] Returning exception Network 2 could not
be found. to caller
2012-05-03 17:51:18 ERROR nova.rpc.amqp
[req-ac208065-fc2e-4c3b-8fd5-d3661ca33ce1 538eac0210274847a183a988f57fbd59
57eb0d7989c7457aa3818998fbf9a4dc] ['Traceback (most recent call last):\n',
'  File "/usr/lib/python2.7/dist-packages/nova/rpc/amqp.py", line 252, in
_process_data\n    rval = node_func(context=ctxt, **node_args)\n', '  File
"/usr/lib/python2.7/dist-packages/nova/network/manager.py", line 258, in
wrapped\n    return func(self, context, *args, **kwargs)\n', '  File
"/usr/lib/python2.7/dist-packages/nova/network/manager.py", line 459, in
associate_floating_ip\n    fixed_ip[\'network_id\'])\n', '  File
"/usr/lib/python2.7/dist-packages/nova/network/manager.py", line 1549, in
_get_network_by_id\n    return self.db.network_get(context, network_id)\n',
'  File "/usr/lib/python2.7/dist-packages/nova/db/api.py", line 755, in
network_get\n    return IMPL.network_get(context, network_id)\n', '  File
"/usr/lib/python2.7/dist-packages/nova/db/sqlalchemy/api.py", line 120, in
wrapper\n    return f(*args, **kwargs)\n', '  File
"/usr/lib/python2.7/dist-packages/nova/db/sqlalchemy/api.py", line 1920, in
network_get\n    raise exception.NetworkNotFound(network_id=network_id)\n',
'NetworkNotFound: Network 2 could not be found.\n']


-- 
非淡薄无以明志，非宁静无以致远
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