Open Stack

thanks Adam.

Both rabbitmq and neutron-openvswitch work fine.

The output of cinder service-list only includes cinder-scheduler,no
cinder-volume.

I think this causes "No valid host was found".


On 2014年09月11日 20:00, Ambadas Ramanna Adam wrote:
>
> Hi Yang,
>
> Please check your message queue service (rabbitmq) and
> neutron-openvswitch services in output of openstack-status command.
>
> If neutron-openvswitch is not active then you will first need to fix
> it and get it started.
>
> Regards,
>
> Ambadas Ramanna Adam
>
> *From:*yanghq [mailto:yanghq at neusoft.com]
> *Sent:* Thursday, September 11, 2014 2:55 PM
> *To:* openstack at lists.openstack.org
> *Subject:* [Openstack] error about Block Storage service node
>
>
> According to
> http://docs.openstack.org/icehouse/install-guide/install/apt/content/cinder-node.html,
> I configure a Block Storage service node.
>
> But I try to create a volume, I get error like this:
>
> 2014-09-07 11:37:31.020 33190 ERROR
> cinder.scheduler.flows.create_volume
> [req-87712243-8548-485a-8b48-30455e05dd4a
> e4936e1ce4bf4a5db7850ef606513f88 fc8cc603cbb74c87999bc9cf8e24eb06 - -
> -] Failed to schedule_create_volume: No valid host was found.
>
> In this page
> http://docs.openstack.org/havana/install-guide/install/apt/content/cinder-node.html
>
> there are discussions about it, but no solutions.
>
> thanks for any help.
>
>
>
> On 2014年08月25日 19:49, Markus Zoeller wrote:
>
>     javed alam <javedamar at gmail.com> <mailto:javedamar at gmail.com> wrote on 08/23/2014 02:39:38 PM:
>
>      
>
>         From: javed alam <javedamar at gmail.com> <mailto:javedamar at gmail.com>
>
>         To: openstack <openstack at lists.openstack.org> <mailto:openstack at lists.openstack.org>, Masoom Alam 
>
>         <masoom.alam at gmail.com> <mailto:masoom.alam at gmail.com>
>
>         Date: 08/23/2014 02:49 PM
>
>         Subject: [Openstack] Fwd: nova instance
>
>          
>
>         ...
>
>         "Error: Failed to launch instance "nova_testing": Please try again 
>
>         later [Error: No valid host was found. ]. "
>
>         ...
>
>         i m even unable to find the log files.
>
>      
>
>     Hi Javed,
>
>      
>
>     the error "no valid host found" is thrown by the `nova-scheduler` 
>
>     service (see [1] for details). 
>
>      
>
>     Depending on your testing environment you have to check different things:
>
>      
>
>     1) An "All-In-One" DevStack[2] setup:
>
>        * check your `local.conf` file in your devstack folder. There should 
>
>          be the following lines: 
>
>             DEST=/opt/stack
>
>             LOGFILE=$DEST/logs/stack.sh.log
>
>             VERBOSE=True 
>
>             SCREEN_LOGDIR=$DEST/logs/screen
>
>        * The log of the scheduler is then available at:
>
>          /opt/stack/logs/screen/screen-n-sch-log
>
>        * The scheduler log should contain more information about the cause
>
>     Afaik the changes will be applied when the services are restarted. You 
>
>     can either execute the DevStack scripts `unstack.sh` and `stack.sh` or
>
>     use the screen tool (see [4]).
>
>      
>
>     2) A dedicated controller node:
>
>     The default folder for nova logs is `/var/log/nova`. The scheduler log 
>
>     should be there. Maybe you have to turn on debugging in the file 
>
>     `/etc/nova/nova.conf` in the line `debug=true` and `verbose=true`.
>
>      
>
>     More infos about working with logs can be found at [3].
>
>      
>
>     Sources:
>
>     [1] OpenStack configuration reference; Juno Release (draft); 
>
>         Section "Scheduling"  <http://docs.openstack.org/trunk/config-reference/content/section_compute-scheduler.html%5b2%5dDevStack;http:/devstack.org/guides/single-machine.html%5b3%5dOpenStackCloudAdministratorGuide;Section>
>
>     http://docs.openstack.org/trunk/config-reference/content/section_compute-scheduler.html  <http://docs.openstack.org/trunk/config-reference/content/section_compute-scheduler.html%5b2%5dDevStack;http:/devstack.org/guides/single-machine.html%5b3%5dOpenStackCloudAdministratorGuide;Section>
>
>     [2] DevStack; http://devstack.org/guides/single-machine.html  <http://docs.openstack.org/trunk/config-reference/content/section_compute-scheduler.html%5b2%5dDevStack;http:/devstack.org/guides/single-machine.html%5b3%5dOpenStackCloudAdministratorGuide;Section>
>
>     [3] OpenStack Cloud Administrator Guide; Section " <http://docs.openstack.org/trunk/config-reference/content/section_compute-scheduler.html%5b2%5dDevStack;http:/devstack.org/guides/single-machine.html%5b3%5dOpenStackCloudAdministratorGuide;Section>Manage Logs";
>
>         
>
>     http://docs.openstack.org/admin-guide-cloud/content/section_manage-logs.html
>
>     [4] IBM Developer Works; 2013-12-06; Restart services of devstack based 
>
>         openstack; 
>
>     https://www.ibm.com/developerworks/community/blogs/8160eff1-dedf-408e-9395-9dffeb68749f/entry/working_with_screens_to_restart_service_of_devstack_based_openstack?lang=en
>
>      
>
>      
>
>     _______________________________________________
>
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>
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>
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