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(a)redhat.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(a)redhat.com> wrote:

Hello Cary, take a look at the Deutsche Telekom project. It is also based on librados and they also needed a solution for managing the metadata of over 30 million email accounts. https://github.com/ceph-dovecot/dovecot-ceph-plugin but also think about how such a system will behave during recovery. I also listened to an interesting lecture on this subject by nasa at cern. https://indico.cern.ch/event/765214/timetable/?print=1&view=standard#23… Hope this helps you, Joachim ___________________________________ Clyso GmbH - Ceph Foundation Member support(a)clyso.com https://www.clyso.com Am 03.03.2021 um 21:20 schrieb Gregory Farnum: > 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(a)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(a)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(a)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(a)redhat.com> >>> wrote: >>>>> 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(a)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 >>> 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? >>>>>> >>>>>> Thank you >>>>>> _______________________________________________ >>>>>> ceph-users mailing list -- ceph-users(a)ceph.io >>>>>> To unsubscribe send an email to ceph-users-leave(a)ceph.io >>>>>> >>>>> >>>>> -- >>>>> >>>>> 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 >>>>> >>> >>> -- >>> >>> 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 >>> >>> >> _______________________________________________ >> ceph-users mailing list -- ceph-users(a)ceph.io >> To unsubscribe send an email to ceph-users-leave(a)ceph.io >> > _______________________________________________ > ceph-users mailing list -- ceph-users(a)ceph.io > To unsubscribe send an email to ceph-users-leave(a)ceph.io