[Openstack] ceph and openstack
Martin Wilderoth
martin.wilderoth at linserv.se
Tue Mar 8 06:07:53 UTC 2016
Thanks Both,
I will run it on controller node.
My cinder-volume crashed.
Any dependensis or is my ceph cluster to old
(Im running dumpling) I will investigate
Thanks
On 8 March 2016 at 06:32, Mike Smith <mismith at overstock.com> wrote:
> If you are using Ceph as a Cinder backend, you would likely want to run
> cinder-volume on your controller node(s). You could run it anywhere I
> suppose, including on the Ceph nodes themselves, but I’d recommend having
> it on the controllers. Wherever you run it, you’d need a properly
> configured ceph.conf, and if you are using cephx authentication, you’d need
> the keyring files. Your compute nodes would need that conf and keys also.
>
> You can also run Ceph for nova ephemeral disks without Cinder at all.
> You’d do that in nova.conf.
>
> We use both at Overstock. Ceph for nova ephemeral for general use, and
> also Ceph as one option in a multi-backend Cinder configuration. We also
> use it for a Glance store, which is a fantastic option because it makes
> disk provisioning for Nova instant, since you’re essentially snapshotting
> and image RBD into an RBD for Nova/Cinder.
>
> Mike Smith
> Lead Cloud Systems Architect
> Overstock.com
>
>
>
> On Mar 7, 2016, at 10:04 PM, Martin Wilderoth <martin.wilderoth at linserv.se>
> wrote:
>
>
> Hello
>
> Where should I run cinder-volume when i user ceph
> on the controller ?
> on the ceph mon or mds ?
> or ?
>
> Maybe it dosn't matter ?
>
> Thanks in advance
>
> Regards Martin
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