[Openstack] Error: Failed to launch instance "inst": Please try again later [Error: No valid host was found. Exceeded max scheduling attempts 3 for instance ....

Silvia Fichera fichera.sil at gmail.com
Mon Jun 22 09:53:20 UTC 2015


On the 19th in the morning I've done several trial, after 9.30 a.m. I don't
remember exactly when.
The day before (when I've installed it) everything was working fine.

2015-06-22 11:49 GMT+02:00 Abhishek Shrivastava <abhishek at cloudbyte.com>:

> Hi Silvia,
>
> One more thing, can you please tell me the exact time when you have
> created the Instance.
>
> On Mon, Jun 22, 2015 at 3:07 PM, Silvia Fichera <fichera.sil at gmail.com>
> wrote:
>
>> Hi Abhishek,
>> it seems there are some errors in the log you suggested to check.
>> I've attached it as a G-drive link because it's too big.
>>
>> Thanks
>>
>> Silvia​
>>  screen-n-cpu.log
>> <https://drive.google.com/file/d/0ByUj7Zpz-6NFR2NvVnJkOHE2Rm8/edit?usp=drive_web>
>>>>
>> 2015-06-22 10:49 GMT+02:00 Abhishek Shrivastava <abhishek at cloudbyte.com>:
>>
>>> Hi Silvia,
>>>
>>> Look for logs in screen folder and specifically screen-n-cpu.log, or you
>>> just upload the same file, will tell you accordingly the cause of error.
>>>
>>> On Mon, Jun 22, 2015 at 2:15 PM, Jamal Arif <jamala at plumgrid.com> wrote:
>>>
>>>> Silvia,
>>>>
>>>> Sorry about that. I missed that.
>>>>
>>>> If you have installed devstack, then you can use the screen sessions
>>>> for checking the logs. Following is a link which provides the different
>>>> commands for accessing screen sessions and the short cuts to access it.
>>>>
>>>> http://www.rushiagr.com/blog/2013/06/05/linux-screens-in-devstack/
>>>>
>>>> Thanks
>>>> Jamal
>>>>
>>>> On Mon, Jun 22, 2015 at 1:20 AM, Silvia Fichera <fichera.sil at gmail.com>
>>>> wrote:
>>>>
>>>>> Hi Jamal,
>>>>> as I already told previously I don't have nor nova nor neutron in
>>>>> /var/log because I have Installed openstack using devstack.
>>>>> I will look for errors in /opt/stack/logs and, if I find somthing I
>>>>> will post it.
>>>>>
>>>>> Thanks
>>>>>
>>>>> 2015-06-22 10:16 GMT+02:00 Jamal Arif <jamala at plumgrid.com>:
>>>>>
>>>>>> ​You can check in two places.
>>>>>>
>>>>>>
>>>>>>    - On Controller:
>>>>>>
>>>>>>
>>>>>> Check for neutron server logs in
>>>>>> /var/log/neutron/​
>>>>>>
>>>>>> Check for Nova schedular etc in
>>>>>> /var/log/nova/
>>>>>>
>>>>>>
>>>>>>    - On Compute Hosts:
>>>>>>
>>>>>>
>>>>>> Check for Nova Compute logs in
>>>>>>
>>>>>> /var/log/nova/nova-compute.log
>>>>>>
>>>>>> There can be multiple reasons for this error starting from nova
>>>>>> scheduler unable to schedule them to virt-type being different in the
>>>>>> nova.conf. Please check the logs and share the error logs if you are able
>>>>>> to find them.
>>>>>>
>>>>>> Thanks
>>>>>> Jamal.
>>>>>>
>>>>>> On Mon, Jun 22, 2015 at 12:14 AM, Silvia Fichera <
>>>>>> fichera.sil at gmail.com> wrote:
>>>>>>
>>>>>>> Good morning.
>>>>>>> As I told I can't find the folder /var/log/nova.
>>>>>>> So which log should I check?
>>>>>>> Thanks
>>>>>>>
>>>>>>> 2015-06-19 16:23 GMT+02:00 Salvatore Orlando <sorlando at nicira.com>:
>>>>>>>
>>>>>>>> I would check for errors in the nova compute logs.
>>>>>>>>
>>>>>>>> In some cases I had the same error, but the actual root cause was
>>>>>>>> that the nova compute log was failing to setup networking for an instance.
>>>>>>>> The request went back to the scheduler, which selected another compute
>>>>>>>> node, but failed in the same way while setting up networking, and so on
>>>>>>>> until failure.
>>>>>>>>
>>>>>>>> Salvatore
>>>>>>>>
>>>>>>>> On 19 June 2015 at 14:50, Silvia Fichera <fichera.sil at gmail.com>
>>>>>>>> wrote:
>>>>>>>>
>>>>>>>>> Hi all, I have 4 VMs in a server, managed by ESXi. One of these
>>>>>>>>> perform as OVS, one is the Openstack controller and the other two are the
>>>>>>>>> compute hosts. Yesterday I set up Openstack via devstack with Opendaylight
>>>>>>>>> integration for VTN. There was some issue in the VTN configuration but I
>>>>>>>>> was able to create the instances. This morning I tryed again to launch the
>>>>>>>>> instances before facing the other problems and there was this error:
>>>>>>>>>
>>>>>>>>> Error: Failed to launch instance "inst": Please try again later
>>>>>>>>> [Error: No valid host was found. Exceeded max scheduling attempts 3 for
>>>>>>>>> instance a12ab017-396a-46d0-9749-011b829c6273. Last exception: [u'Traceback
>>>>>>>>> (most recent call last):\n', u' File
>>>>>>>>> "/opt/stack/nova/nova/compute/manager.py", line 2081, in
>>>>>>>>> _do_build_and_run_in].
>>>>>>>>>
>>>>>>>>> My VMs have the maximun availability of memory and CPU (the same
>>>>>>>>> as yesterday). I tryed with a tiny flavour but there is the same error.
>>>>>>>>> When I do: nova-manage service list in my controller node I have this
>>>>>>>>> output:
>>>>>>>>>
>>>>>>>>> Binary Host Zone Status State Updated_At
>>>>>>>>>
>>>>>>>>> nova-conductor devstack1 internal enabled :-) 2015-06-19 12:45:16
>>>>>>>>>
>>>>>>>>> nova-compute devstack1 nova enabled :-) 2015-06-19 12:45:08
>>>>>>>>>
>>>>>>>>> nova-cert devstack1 internal enabled :-) 2015-06-19 12:45:10
>>>>>>>>>
>>>>>>>>> nova-scheduler devstack1 internal enabled :-) 2015-06-19 12:45:10
>>>>>>>>>
>>>>>>>>> nova-consoleauth devstack1 internal enabled :-) 2015-06-19 12:45:14
>>>>>>>>>
>>>>>>>>> nova-compute devstack2 nova enabled :-) 2015-06-19 12:45:10
>>>>>>>>>
>>>>>>>>> nova-compute devstack3 nova enabled :-) 2015-06-19 12:45:11
>>>>>>>>>
>>>>>>>>> (all smiling!!)
>>>>>>>>>
>>>>>>>>> I have also read to check the file /var/log/nova/nova.log (if I'm
>>>>>>>>> not wrong), but I can't find the directory nova inside /var/log
>>>>>>>>>
>>>>>>>>> Thank you
>>>>>>>>>
>>>>>>>>> --
>>>>>>>>> Silvia Fichera
>>>>>>>>>
>>>>>>>>> _______________________________________________
>>>>>>>>> Mailing list:
>>>>>>>>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
>>>>>>>>> Post to     : openstack at lists.openstack.org
>>>>>>>>> Unsubscribe :
>>>>>>>>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
>>>>>>>>>
>>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> Silvia Fichera
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> Mailing list:
>>>>>>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
>>>>>>> Post to     : openstack at lists.openstack.org
>>>>>>> Unsubscribe :
>>>>>>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
>>>>>>>
>>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Silvia Fichera
>>>>>
>>>>
>>>>
>>>> _______________________________________________
>>>> Mailing list:
>>>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
>>>> Post to     : openstack at lists.openstack.org
>>>> Unsubscribe :
>>>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
>>>>
>>>>
>>>
>>>
>>> --
>>>
>>>
>>> *Thanks & Regards,*
>>> *Abhishek*
>>> *Cloudbyte Inc. <http://www.cloudbyte.com>*
>>>
>>
>>
>>
>> --
>> Silvia Fichera
>>
>
>
>
> --
>
>
> *Thanks & Regards,*
> *Abhishek*
> *Cloudbyte Inc. <http://www.cloudbyte.com>*
>



-- 
Silvia Fichera
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstack.org/pipermail/openstack/attachments/20150622/6dc7993f/attachment.html>


More information about the Openstack mailing list