Installing Cinder on Two host Ocata RDO

asked 2017-06-10 15:22:00 -0600

amit-g gravatar image

updated 2017-06-10 15:38:34 -0600


I am planning To install OpenStack With Two nodes. I have a question is there a way to install cinder services on two host in OpenStack Ocata or Is it possible. I needed this for my requirement. I shall be provisioning storage to OpenStack node using NFS , that will be hosted on external storage, by specifying backend in /etc/cinder/cinder.conf. Now, I want to have this NFS hosted on the two different nodes, with different IPs , that will be exported to two different storage. I am using Packstack to deploy openstack. is there a way to define cinder hosts in answerfile.

Feel free to request me details if needed.


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answered 2017-06-10 19:48:58 -0600

updated 2017-06-11 00:41:11 -0600

In other words, you have two NFS backends, right? Declare them in the cinder.conf file. Each backend is managed by its own cinder-volume process, which can run on the same node or two different nodes.

If you want the two NFS servers to look like a single backend, there will normally be a single cinder-volume process. See

Two cinder-volume processes managing the same backend is also possible in an active-passive configuration, where one process is standing by in case the other becomes inaccessible or crashes. Work on active-active is ongoing, afaik. This blog documents the challenges and progress:

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Thanks for the reply. Is there a way to start cinder-volume process on the other node. I presently , have second node running as compute node. I can run the command cinder-list on the second node but cannot see /etc/cinder.conf on the second node.

amit-g gravatar imageamit-g ( 2017-06-11 12:03:47 -0600 )edit

The fact that there is no cinder.conf shows that cinder-volume is not installed.

Installation instructions for Centos/RHEL:

Bernd Bausch gravatar imageBernd Bausch ( 2017-06-11 18:35:41 -0600 )edit

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Asked: 2017-06-10 15:22:00 -0600

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Last updated: Jun 11 '17