cinder-volume keep going down after few seconds

asked 2018-11-12 08:21:14 -0600

MokhtarAmmar gravatar image

hello, we are using nova version and everything was working just fine until last night the cinder-volume went down and when we restart the service from the storage node it changes its status for a few seconds . we used to have this problem but restarting the service from both controller and storage node was enough . please help us it's an urgent matter .

  in our storage node log we find this error :
ERROR oslo_service.service PreconditionFailed: Exchange.declare: (406) PRECONDITION_FAILED - inequivalent arg 'durable' for exchange 'openstack' in vhost '/': received 'false' but current is 'true'
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There might be an issue with rabbit-mq, restart the rabbit-mq service and check.if that is does not work check rabbit-mq credentials in cinder config file, or reset the rabbit-mq credentials and try it might be work

Eranachandran gravatar imageEranachandran ( 2018-11-12 11:07:40 -0600 )edit

Googling for "openstack" PRECONDITION_FAILED - inequivalent arg yields a handful of results, including a Red Hat bug.

Bernd Bausch gravatar imageBernd Bausch ( 2018-11-12 20:45:47 -0600 )edit

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answered 2018-11-14 12:14:58 -0600

reynoni gravatar image

That error tells you everything you need to know. RabbitMQ-Server and the host attempting to connect (I'm guessing Cinder-volume) have differing config settings. One is set to utilized durable queues and the other is not. Verify that these settings match across the configurations and you should not have a problem.

Information on queue types if you aren't sure which you should use:

Information on cinder durable setting flag buried in here, search for "durable": (

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answered 2018-11-12 23:15:01 -0600

MokhtarAmmar gravatar image

Thank u for your answer it was helpful.

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Asked: 2018-11-12 08:21:14 -0600

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Last updated: Nov 14 '18