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:[email protected]] Sent: Thursday, September 11, 2014 2:55 PM To: [email protected] 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 <[email protected]><mailto:[email protected]> wrote on 08/23/2014 02:39:38 PM: From: javed alam <[email protected]><mailto:[email protected]> To: openstack <[email protected]><mailto:[email protected]>, Masoom Alam <[email protected]><mailto:[email protected]> 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 _______________________________________________ Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack Post to : [email protected]<mailto:[email protected]> Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack --------------------------------------------------------------------------------------------------- Confidentiality Notice: The information contained in this e-mail and any accompanying attachment(s) is intended only for the use of the intended recipient and may be confidential and/or privileged of Neusoft Corporation, its subsidiaries and/or its affiliates. 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