[ceph-users] Ceph versions not showing RGW

John Spray jspray at redhat.com
Thu Nov 2 06:56:19 PDT 2017


On Thu, Nov 2, 2017 at 1:54 PM, Hans van den Bogert
<hansbogert at gmail.com> wrote:
> Just to get this really straight, Jewel OSDs do send this metadata?
> Otherwise I'm probably mistaken that I ever saw 10.2.x versions in the
> output.

RGW daemons only started sending metadata in Luminous.  OSD/mon/MDS
daemons already sent metadata in Jewel.

John

>
> Thanks,
>
> Hans
>
> On 2 Nov 2017 12:31 PM, "John Spray" <jspray at redhat.com> wrote:
>>
>> On Thu, Nov 2, 2017 at 11:16 AM, Hans van den Bogert
>> <hansbogert at gmail.com> wrote:
>> > Hi all,
>> >
>> > During our upgrade from Jewel to Luminous I saw the following behaviour,
>> > if
>> > my memory serves me right:
>> >
>> > When upgrading for example monitors and OSDs, we saw that the `ceph
>> > versions` command correctly showed at one that some OSDs were still on
>> > Jewel
>> > (10.2.x) and some were already upgraded and thus showed a version of
>> > 12.2.0.
>> > All as expected -- however, for the RGWs, those only showed up until
>> > they
>> > were upgraded to luminous. So the command gives a false sense of a
>> > complete
>> > overview of the Ceph cluster, e.g., in my case this resulted that I
>> > forgot
>> > about 4 out of 6 RGW instances which were still on Jewel.
>> >
>> > What are the semantics of the `ceph versions` ? -- Was I wrong in
>> > expecting
>> > that Jewel RGWs should show up there?
>>
>> RGW daemons reporting metadata to the mon/mgr daemons is a new
>> features in luminous -- older RGW daemons are effectively invisible to
>> us, so Jewel daemons will not show up at all in the versions output.
>>
>> John
>>
>> >
>> > Thanks,
>> >
>> > Hans
>> >
>> > _______________________________________________
>> > ceph-users mailing list
>> > ceph-users at lists.ceph.com
>> > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
>> >


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