Nova /cloud computing

Bonjour,

J'ai comme sujet de PFE l'installation/sécurité d'une solution cloud coputing ,
j ai choisi OpenStack,me lorsque j'ai installé nova et quand j'essaie d'exécuter la commande «sudo-nova gestion db sync" sur ubuntu 12.4.1 ca me génère cette erreur !!

Svp Pouvez-vouz m'aider !

2012-09-05 09:52:09 DEBUG nova.utils [-] backend <module 'nova.db.sqlalchemy.migration' from '/usr/lib/python2.7/dist-packages/nova/db/sqlalchemy/migration.pyc'> from (pid=7025) __get_backend /usr/lib/python2.7/dist-packages/nova/utils.py:658
2012-09-05 09:52:09 WARNING nova.utils [-] /usr/local/lib/python2.7/dist-packages/sqlalchemy/pool.py:683: SADeprecationWarning: The 'listeners' argument to Pool (and create_engine()) is deprecated. Use event.listen().
Pool.__init__(self, creator, **kw)

2012-09-05 09:52:09 WARNING nova.utils [-] /usr/local/lib/python2.7/dist-packages/sqlalchemy/pool.py:159: SADeprecationWarning: Pool.add_listener is deprecated. Use event.listen()
self.add_listener(l)

contenue du fichier nova.conf

-dhcpbridge_flagfile=/etc/nova/nova.conf
-dhcpbridge=/usr/bin/nova-dhcpbridge
-logdir=/var/log/nova
-state_path=/var/lib/nova
-lock_path=/run/lock/nova
-allow_admin_api=true
-use_deprecated_auth=false
-auth_strategy=keystone
-scheduler_driver=nova.scheduler.simple.SimpleScheduler
-s3_host=192.168.1.4
-ec2_host=192.168.1.4
-rabbit_host=192.168.1.4
-cc_host=192.168.1.4
-nova_url=http://192.168.1.4:8774/v1.1/
-routing_source_ip=192.168.1.4
-glance_api_servers=192.168.1.4:9292
-image_service=nova.image.glance.GlanceImageService
-iscsi_ip_prefix=192.168.4
-sql_connection=mysql://novadbadmin:novasecret@192.168.1.4/nova
-ec2_url=http://192.168.1.4:8773/services/Cloud
-keystone_ec2_url=http://192.168.1.4:5000/v2.0/ec2tokens
-api_paste_config=/etc/nova/api-paste.ini
-libvirt_type=kvm
-libvirt_use_virtio_for_bridges=true
-start_guests_on_host_boot=true
-resume_guests_state_on_host_boot=true
# vnc specific configuration
-novnc_enabled=true
-novncproxy_base_url=http://192.168.1.4:6080/vnc_auto.html
-vncserver_proxyclient_address=192.168.1.4
-vncserver_listen=192.168.230.41
# network specific settings
-network_manager=nova.network.manager.FlatDHCPManager
-public_interface=eth0
-flat_interface=eth1
-flat_network_bridge=br100
-fixed_range=192.168.4.1/27
-floating_range=192.168.1.4/27
-network_size=32
-flat_network_dhcp_start=192.168.4.33
-flat_injected=False
-force_dhcp_release
-iscsi_helper=tgtadm
-connection_type=libvirt
-root_helper=sudo nova-rootwrap
-verbose=False