openstack team mailing list archive

[Logan McNaughton <logan@xxxxxxxxxxxx>]

You'll want to look here:
http://docs.openstack.org/trunk/openstack-ha/content/s-cinder-api.html

You'll need to basically create a virtual IP and load balance between the
nodes running cinder-api and cinder-scheduler. If you want multiple nodes
running cinder-volume, you can add them regularly, like you would with a
nova-compute node.
On Mar 11, 2013 6:51 PM, "Debashis Kundu (dkundu)" <dkundu@xxxxxxxxx> wrote:

> O
>
> ----- Original Message -----
> From: Craig E. Ward [mailto:cward@xxxxxxx]
> Sent: Monday, March 11, 2013 05:23 PM
> To: openstack@xxxxxxxxxxxxxxxxxxx <openstack@xxxxxxxxxxxxxxxxxxx>
> Subject: [Openstack] Configuring More-than-One Cinder Node
>
> I have an installation that wants to deploy two or more cinder nodes
> within an
> OpenStack (Folsom) cluster. All of the hits I find on Google for
> configuring
> cinder only describe how to configure the software for a single node. Is it
> even possible to have more than one node running the cinder services in a
> cluster?
>
> The setup I have has one of the cinder nodes identified as "the" cinder
> node to
> the compute and other node types. A second node was installed and the
> cinder
> services started.
>
> On the nova controller node, however, while a new volume could be created
> that
> was listed in the MySQL database as on the second node, all attempts to
> attach
> that volume to an instance "silently" failed. The "nova volume-attach"
> command
> would come back with an id and mapping of instance to volume, but the very
> next
> "nova volume-list" command continued to show the volume in question as
> "available."
>
> If the second cinder node had the cinder-volume service running, volumes on
> that node could be deleted. If cinder-volume was not running, the "delete"
> would go on forever.
>
> Everything works as expected with only the cinder node configured in
> nova.conf
> running, i.e. as a single cinder node installation. Volumes can be created,
> attached, used, detached, and deleted.
>
> Are there some extra parameters that should be set in either nova.conf or
> cinder.conf to indicate that the cinder services are available on
> more-than-one
> node? Or is what we're trying to do something unexpected and not supported?
>
> Thanks,
>
> Craig
>
> --
> Craig E. Ward
> USC Information Sciences Institute
> cward@xxxxxxx
>
>
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