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Is cinder necessary to be installed for ceph?

asked 2013-07-23 10:26:51 -0500

sonali gravatar image

updated 2013-08-26 00:20:51 -0500

fifieldt gravatar image


I am newbie to openstack, I am planning to make Ha deployment of openstack. I have been going through lot documentation,But i am confused. I wanted to use ceph as block storage, but then do i still need to install cinder also?

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answered 2013-07-29 03:17:12 -0500

Yes, here I wrote what needs to be done to integrate OpenStack and Ceph:

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Hi! It sounds like Cinder is just api, so can i consider that cinder noce will not need be very high end h/w config?

sonali gravatar imagesonali ( 2013-07-29 14:11:51 -0500 )edit

Something like that, because you will use Ceph backend storage through Cinder. Cinder must be installed and configured for Ceph, but it will not store any volumes on that host and it doesn't need to be high h/w, as you said.

Alen Komljen gravatar imageAlen Komljen ( 2013-07-30 03:37:00 -0500 )edit

answered 2013-07-23 10:49:42 -0500

sgordon gravatar image

Yes, then you would configure the Cinder volume service to use Ceph as the storage backend. See also:

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answered 2013-07-29 04:40:00 -0500

In this case, cinder just is a front-end storage: is a connector from vm client to a back-end storage. ceph is a back-end storage: where to store data.

If you don't want to use ceph as a back-end storage, there're a lot of candidates like as: glusterfs, nfs, iscsi ...

By default, cinder uses the local-volume like as a back-end storage through iscsi ... you need to change cinder config if you want to use another.

Depends on your purpose and your infrastructure system which you own, select a corresponding candidate. if you want to build a distributed storage for large scale, i recommend you use ceph.

And for small scale, you can use local disk as a back-end storage..

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Asked: 2013-07-23 10:26:51 -0500

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Last updated: Jul 29 '13