[Openstack-operators] Liberty cinder ceph architecture

Arne Wiebalck Arne.Wiebalck at cern.ch
Wed Dec 9 08:50:34 UTC 2015

We had the Cinder services running on our controllers initially, but split them off
to a separate set of (virtual) machines in order to allow for independent upgrades.
Performance-wise that should not make a big difference, unless you expect an
enormous amount of requests. Nothing needs to be installed on the Ceph side.


On 08 Dec 2015, at 09:26, Ignazio Cassano <ignaziocassano at gmail.com<mailto:ignaziocassano at gmail.com>> wrote:

Hi all, I am going to install openstack liberty and I already installed two ceph nodes .  Now I need to know where cinder components must be installed.
In an nfs scenario I installed some cinder componens on controller node and some on nfs server but with ceph I would like  to avoid installing cinder components directly on ceph nodes.
Any suggestions ?  My controller environment is made up of a cluster of physical nodes.
Computing is made up of two kvm nodes.
Must I install cinder-api, cinder-scheduler, cinder-volume and cinder backup on controller nodes or for best performace it' s more convenient to split them on different nodes ?
Another question is related to object storage : is ceph radosgw supported to replace swift ?

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Arne Wiebalck

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