nova boot error

Hi,

Can you please provide your nova.conf and the interesting parts of the log files in /var/log/nova ?

[DEFAULT]
verbose=True
auth_strategy=keystone
allow_resize_to_same_host=True
api_paste_config=/etc/nova/api-paste.ini
rootwrap_config=/etc/nova/rootwrap.conf
compute_scheduler_driver=nova.scheduler.filter_scheduler.FilterScheduler
dhcpbridge_flagfile=/etc/nova/nova.conf
force_dhcp_release=True
fixed_range=10.0.0.0/24
s3_host=192.168.1.xxx
s3_port=3333
osapi_compute_extension=nova.api.openstack.compute.contrib.standard_extensions
my_ip=192.168.1.xxx
sql_connection=mysql://root:mypassword@localhost/nova?charset=utf8
libvirt_type=qemu
libvirt_cpu_mode=none
instance_name_template=instance-%08x
enabled_apis=ec2,osapi_compute,metadata
volume_api_class=nova.volume.cinder.API
state_path=/opt/stack/data/nova
lock_path=/opt/stack/data/nova
instances_path=/opt/stack/data/nova/instances
logging_context_format_string=%(asctime)s %(color)s%(levelname)s %(name)s [^[[0$
logging_default_format_string=%(asctime)s %(color)s%(levelname)s %(name)s [^[[0$
logging_debug_format_suffix=^[[00;33mfrom (pid=%(process)d) %(funcName)s %(path$
logging_exception_prefix=%(color)s%(asctime)s TRACE %(name)s ^[[01;35m%(instanc$
network_manager=nova.network.manager.FlatDHCPManager
public_interface=br100
vlan_interface=eth0
flat_network_bridge=br100
flat_interface=eth0
novncproxy_base_url=http://192.168.1.xxx:6080/vnc_auto.html
xvpvncproxy_base_url=http://192.168.1.xxx:6081/console
vncserver_listen=127.0.0.1
vncserver_proxyclient_address=127.0.0.1
ec2_dmz_host=192.168.1.xxx
rabbit_host=localhost
rabbit_password=mypassword
glance_api_servers=192.168.1.xxx:9292
compute_driver=libvirt.LibvirtDriver
firewall_driver=nova.virt.libvirt.firewall.IptablesFirewallDriver

shell>nova-manage service list
if nova-network's status is xxx instead of :)
shell>service nova-network status
if nova-network is stop/waiting, then follow the order:
1. check /var/log/nova/nova-scheduler.log to see any error or critical
2. check /var/log/nova/nova-network.log
3. check /var/log/nova/nova-compute.log
note that, since you're long time without any action, information will roll to log.1 .2 .3 etc
you can try to lunch a new instance, when it fail, check the log immidiately, and paste any error or critical info to us

thanks