openstack team mailing list archive

[Dan Wendlandt <dan@xxxxxxxxxx>]

Hi Praveen,

The error you are seeing is because there is no 'network' record in the nova
database corresponding to 'br100' (which is the default value for the
bridge).  Spawning a VM requires finding the appropriate network(s) for that
VM in the database, and assigning the VM an IP address from the associated
network subnet.

Did you run nova-manage to create a network?  If so, can you send out the
command you ran?

For example the Running Nova wiki (http://wiki.openstack.org/RunningNova)
includes the line:


sudo nova-manage network create novanetwork 10.0.0.0/8 1 64

Dan


On Tue, Aug 16, 2011 at 9:45 PM, praveen_kumar girir <gkpraven@xxxxxxxxx>wrote:

> 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@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@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@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@xxxxxxxxx>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@xxxxxxxxx>
>> 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@xxxxxxxxxxxxxxxxxxx
>> > 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
>>
>> _______________________________________________
>> Mailing list: https://launchpad.net/~openstack
>> Post to     : openstack@xxxxxxxxxxxxxxxxxxx
>> Unsubscribe : https://launchpad.net/~openstack
>> More help   : https://help.launchpad.net/ListHelp
>>
>
>
> _______________________________________________
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> Post to     : openstack@xxxxxxxxxxxxxxxxxxx
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>
>


-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~
Dan Wendlandt
Nicira Networks, Inc.
www.nicira.com | www.openvswitch.org
Sr. Product Manager
cell: 650-906-2650
~~~~~~~~~~~~~~~~~~~~~~~~~~~