[Openstack] Unable to run instances , instance status is networking,

Dan Wendlandt dan at nicira.com
Wed Aug 17 15:13:52 UTC 2011


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 at gmail.com>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 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
>> > More help   : https://help.launchpad.net/ListHelp
>> >
>> >
>>
>>
>>
>> --
>> 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 at lists.launchpad.net
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>>
>
>
> _______________________________________________
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>


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