Open Stack

@Kevin: full ack.

Also, using S3 compliant storage for Glance is quite common, too.

2016-07-20 19:12 GMT+02:00 Fox, Kevin M <Kevin.Fox at pnnl.gov>:

> We use ceph with cinder and glance. I don't see a reason not to.
>
> We do not set nova to use it for anything but cinder volumes though.
>
> The reason being, if you set it up that way, your users have no way of
> opting out of the potential performance hit if using no local storage for
> non pets.
>
> If you leave it nova local, you can always still get ceph remote storage
> for the whole vm by requesting the root disk be volume backed.
>
> We also already have a ceph deployment managed without kolla, and that's
> unlikely to change.
>
> So, for our site, our settings would probably be:
> 1. Deploy Ceph (enable_ceph="no")
> 2. Use Ceph with Glance (enable_ceph_glance="yes")
> 3. Use Ceph with Cinder (enable_ceph_cinder="yes")
> 4. Use Ceph with Nova (enable_ceph_nova="no")
>
> Thanks,
> Kevin
> ________________________________________
> From: Jeffrey Zhang [zhang.lei.fly at gmail.com]
> Sent: Wednesday, July 20, 2016 9:51 AM
> To: OpenStack Development Mailing List (not for usage questions)
> Subject: Re: [openstack-dev] OpenStack Kolla - External Ceph
>
> On Wed, Jul 6, 2016 at 1:47 AM, Steven Dake (stdake) <stdake at cisco.com>
> wrote:
> >
> > At this point, I feel we are going a direction in which we try to wrap
> > everything anybody could possibly want to configure with Kolla by making
> > extensive use of global.yml. We would have to introduce flags indicating
> a
> > couple of different scenarios:
> >
> > 1. Deploy Ceph (already there: enable_ceph="yes")
> > 2. Use Ceph with Glance (enable_ceph_glance="yes")
> > 3. Use Ceph with Cinder (enable_ceph_cinder="yes")
> > 4. Use Ceph with Nova (enable_ceph_nova="yes")
> >
> >
> > I disagree.  If ceph is enabled, then ceph should be used, if ceph is not
> > enabled, then ceph shouldn't be used.  That implies all of OpenStack
> either
> > uses Ceph or not.  So we really just need enable_ceph.
>
>
> why we need separate configuration for ceph? I think if ceph is
> enable, all the service should use ceph, too.
>
> --
> Regards,
> Jeffrey Zhang
> Blog: http://xcodest.me
>
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