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Dear Mandell,
The nova-network process is running.
But I am not able to see any log file under /var/log/libvert/qemu/
directory.
When I run describe instance command , I am able to see this output.
root at openstack2:~# euca-describe-instances
RESERVATION    r-l4zr8lyg    bexar    default
INSTANCE    i-0000000c    ami-2b84327c            networking    test (bexar,
openstack2)    0        m1.tiny    2011-08-12T11:29:42Z    nova
RESERVATION    r-s8zj5yje    bexar    default
INSTANCE    i-0000000a    ami-2b84327c            networking    test (bexar,
openstack2)    0        m1.tiny    2011-08-12T11:29:33Z    nova

logs output:

nova-compute.log:

2011-08-17 10:00:46,016 ERROR nova [-] Exception during message handling
(nova): TRACE: Traceback (most recent call last):
(nova): TRACE:   File "/usr/lib/pymodules/python2.7/nova/rpc.py", line 188,
in _receive
(nova): TRACE:     rval = node_func(context=ctxt, **node_args)
(nova): TRACE:   File "/usr/lib/pymodules/python2.7/nova/exception.py", line
120, in _wrap
(nova): TRACE:     return f(*args, **kw)
(nova): TRACE:   File
"/usr/lib/pymodules/python2.7/nova/compute/manager.py", line 219, in
run_instance
(nova): TRACE:     self.get_network_topic(context),
(nova): TRACE:   File
"/usr/lib/pymodules/python2.7/nova/compute/manager.py", line 173, in
get_network_topic
(nova): TRACE:     host = self.network_manager.get_network_host(context)
(nova): TRACE:   File
"/usr/lib/pymodules/python2.7/nova/network/manager.py", line 276, in
get_network_host
(nova): TRACE:     FLAGS.flat_network_bridge)
(nova): TRACE:   File "/usr/lib/pymodules/python2.7/nova/db/api.py", line
620, in network_get_by_bridge
(nova): TRACE:     return IMPL.network_get_by_bridge(context, bridge)
(nova): TRACE:   File
"/usr/lib/pymodules/python2.7/nova/db/sqlalchemy/api.py", line 98, in
wrapper
(nova): TRACE:     return f(*args, **kwargs)
(nova): TRACE:   File
"/usr/lib/pymodules/python2.7/nova/db/sqlalchemy/api.py", line 1294, in
network_get_by_bridge
(nova): TRACE:     raise exception.NotFound(_('No network for bridge %s') %
bridge)
*(nova): TRACE: NotFound: No network for bridge br100*
(nova): TRACE:
2011-08-17 10:01:45,446 INFO nova.compute.manager [-] Found instance
'instance-0000000b' in DB but no VM. State=0, so assuming spawn is in
progress.

Here, I have highlighted the error,
here I am pasting br100 details.
root at openstack2:~# cat /etc/network/interfaces
# The loopback network interface
auto lo
iface lo inet loopback

auto br100
iface br100 inet static
        bridge_ports eth0
        bridge_stp off
        bridge_maxwait 0
        bridge_fd 0
        address 10.223.84.45
        netmask 255.255.255.0
        broadcast 10.223.84.255
        gateway 10.223.84.251
        dns-nameservers 10.223.45.36
root at openstack2:~#

could any one help me out here.

--Thanks and regards,
Praveen GK.

On Tue, Aug 16, 2011 at 8:24 PM, Mandell Degerness <mdegerne at gmail.com>wrote:

> Check first that the network process is running and not producing
> errors.  Then check for errors in
> /var/log/libvert/qemu/instance-00000001.log.  I suspect the issue lies
> with, either, the network configuration or with a missing file for
> qemu (kvm-pxe).
>
> -Mandell
>
> On Mon, Aug 15, 2011 at 9:48 PM, praveen_kumar girir <gkpraven at gmail.com>
> wrote:
> >> Dear All,
> >
> > I am facing issue while running instances under ubuntu 11.04 server
> > edition.
> > Steps followed:
> >
> > Installed openstack nova, bexar edition to my cluster.
> > check all the running processes
> > Able to publish the image.
> > Able to describe the images, which change the state from .gz to
> untarring.
> >
> >           Run the command euca-run-instances $emi -k my_key -t m1.tiny.
> >        After this,
> >           check the status using, euca-describe-images. the status is
> shows
> > "NETWORKING" rather RUNNING
> > When I checked the logs under /var/log/nova/nova-manage.log file, I am
> able
> > to see this error.
> > 2011-08-12 17:36:22,305 INFO nova.compute.manager [-] Found instance
> > 'instance-0000000e' in DB but no VM. State=0, so assuming spawn is in
> > progress.
> >
> > Could any one put some light on this
> >
> > --Thanks and regards,
> > Praveen GK,
> >
> >
> > _______________________________________________
> > Mailing list: https://launchpad.net/~openstack
> > Post to     : openstack at lists.launchpad.net
> > Unsubscribe : https://launchpad.net/~openstack
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> >
> >
>
>
>
> --
> Regards,
> Mandell Degerness
>
> "True glory consists in doing what deserves to be written; in writing
> what deserves to be read; and in so living as to make the world
> happier for our living in it."
>   Pliny the Elder
>
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