openstack team mailing list archive

["Wayne A. Walls" <wayne@xxxxxxxxxxxxx>]

Greetings, Praveen!

On your compute nodes, the only required service is nova-compute.  There has
been a semi-recent update to nova-network that adds HA to the service, and
this requires nova-network to be installed on all the compute nodes as well.
As far as api and scheduler go, they are not required on every node.

For more information on nova-network's HA work, check out Vish's blog:
http://www.unchainyourbrain.com/openstack/13-networking-in-nova

Cheers,


Wayne

From:  praveen_kumar girir <gkpraven@xxxxxxxxx>
Date:  Thu, 18 Aug 2011 09:28:32 +0530
To:  Dan Wendlandt <dan@xxxxxxxxxx>
Cc:  openstack <openstack@xxxxxxxxxxxxxxxxxxx>
Subject:  Re: [Openstack] Unable to run instances , instance status is
networking, 

Dear Dan, 
I have changed my /etc/nova/nova.conf file to reflect proper fixed_ip range,
then it start to launch.

I have one more question,

 does the compute nodes required to have all the nova softwares to run.
because on my slave nodes initially it was only nova-compute, later
installed nova-scheduler, api, network n all.

Started  multiple instances from master node, able to create vm on slave
nodes, but the status is shutdown. No idea.

if I am able to access these from slave nodes, it requires EC2_ACCESS_KEY.
By default it is not set, do I need to set it manually.

Could any one please clarify my doubts.

--Thanks and regards,
Praveen GK.

On Wed, Aug 17, 2011 at 8:43 PM, Dan Wendlandt <dan@xxxxxxxxxx> wrote:
> 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 <http://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
>>>> <https://launchpad.net/%7Eopenstack>
>>>> > Post to     : openstack@xxxxxxxxxxxxxxxxxxx
>>>> > Unsubscribe : https://launchpad.net/~openstack
>>>> <https://launchpad.net/%7Eopenstack>
>>>> > 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
>>> <https://launchpad.net/%7Eopenstack>
>>> Post to     : openstack@xxxxxxxxxxxxxxxxxxx
>>> Unsubscribe : https://launchpad.net/~openstack
>>> <https://launchpad.net/%7Eopenstack>
>>> More help   : https://help.launchpad.net/ListHelp
>> 
>> 
>> _______________________________________________
>> Mailing list: https://launchpad.net/~openstack
>> <https://launchpad.net/%7Eopenstack>
>> Post to     : openstack@xxxxxxxxxxxxxxxxxxx
>> Unsubscribe : https://launchpad.net/~openstack
>> <https://launchpad.net/%7Eopenstack>
>> More help   : https://help.launchpad.net/ListHelp
>> 
> 
> 
> 
> -- 
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Dan Wendlandt 
> Nicira Networks, Inc.
> www.nicira.com <http://www.nicira.com>  | www.openvswitch.org
> <http://www.openvswitch.org>
> Sr. Product Manager
> cell: 650-906-2650 <tel:650-906-2650>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~
> 

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