Open Stack

Hi Fox,

Clearly. Thanks for explanation.

On Thu, Jul 21, 2016 at 3:26 PM, Mathias Ewald <mewald at evoila.de> wrote:
> @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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-- 
Regards,
Jeffrey Zhang
Blog: http://xcodest.me