Unfortunately, nothing like this exists in RADOS. It can't really -- scaling is inimical to the sort of data collation you seem to be looking for. If you use librados, you need to maintain all your own metadata. RGW has done a lot of work to support these features; depending on what you need you may be able to make do by implementing your own centralized metadata system in other objects (omap might be useful); if not you'll need to set up a more extensive system. -Greg On Tue, Mar 2, 2021 at 1:12 PM Cary FitzHugh <cary.fitzhugh@gmail.com> wrote:
Phooey. :)
Do you know of any notification subsystems in libRADOS that might be useful?
Will have to think on this...
Thanks
On Tue, Mar 2, 2021 at 4:05 PM Matt Benjamin <mbenjami@redhat.com> wrote:
Right. The elastic search integration--or something custom you could base on s3 bucket notifications--would both be working with events generated in RGW.
Matt
On Tue, Mar 2, 2021 at 3:55 PM Cary FitzHugh <cary.fitzhugh@gmail.com> wrote:
Understood.
With the RGW architecture comes more load balancing concerns, more
moving parts, more tedious (to me) ACLs, less features (append and some other things not supported in S3). Was hoping for a solution which didn't require us to be hamstrung and only read / write to a pool via the gateway.
If the RGW Metadata search was able to "source" it's data from the OSDs
and sync that way, then I'd be up for setting up a skeleton implementation, but it sounds like RGW Metadata is only going to record things which are flowing through the gateway. (Is that correct?)
On Tue, Mar 2, 2021 at 3:46 PM Matt Benjamin <mbenjami@redhat.com>
Hi Cary,
As you've said, these are well-developed features of RGW, I think that would be the way to go, in the Ceph ecosystem.
Matt
On Tue, Mar 2, 2021 at 3:41 PM Cary FitzHugh <cary.fitzhugh@gmail.com>
wrote:
Hello -
We're trying to use native libRADOS and the only challenge we're
running
into is searching metadata.
Using the rgw metadata sync seems to require all data to be pushed
wrote: through
the rgw, which is not something we're interested in setting up at the moment.
Are there hooks or features of libRADOS which could be leveraged to enable syncing of metadata to an external system (elastic-search / postgres / etc)?
Is there a way to listen to a stream of updates to a pool in real-time, with some guarantees I wouldn't miss things?
Are there any features like this in libRADOS?
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Matt Benjamin Red Hat, Inc. 315 West Huron Street, Suite 140A Ann Arbor, Michigan 48103
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--
Matt Benjamin Red Hat, Inc. 315 West Huron Street, Suite 140A Ann Arbor, Michigan 48103
http://www.redhat.com/en/technologies/storage
tel. 734-821-5101 fax. 734-769-8938 cel. 734-216-5309
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