Hi Vlad,
I just upgraded my ceph cluster from firefly to hammer and all right.
Please do it according to the manuals in www.ceph.com <http://www.ceph.com/>
and restart monitors and then osds. I restarted osds one by one, which means
restart one OSD and waits for it runs normal and then restart the other OSD and
so on.
> On Feb 2, 2016, at 09:10, Vlad Blando <[email protected]> wrote:
>
> What if the upgrade fails, what is the rollback scenario?
>
>
>
> On Wed, Jan 27, 2016 at 10:10 PM, <[email protected]
> <mailto:[email protected]>> wrote:
> I just upgraded from firefly to infernalis (firefly to hammer to
> infernalis) my cluster
> All came like a charm
> I upgraded mon first, then the osd, one by one, restarting the daemon
> after each upgrade
> Remember to change uid of your file, as the osd daemon now run under the
> user ceph (and not root): can be pretty long operation .. do the chown,
> then upgrade, then shut the daemon, rechown the remaining files, start
> the daemon (use chown --from=0:0 ceph:ceph -R /var/lib/ceph/osd/ceph-2
> to speed up the last chown)
>
> To conclude, I upgraded the whole cluster without a single downtime
> (pretty surprised, didn't expect the process to be "that" robust)
>
> On 27/01/2016 15:00, Vlad Blando wrote:
> > Hi,
> >
> > I have a production Ceph Cluster
> > - 3 nodes
> > - 3 mons on each nodes
> > - 9 OSD @ 4TB per node
> > - using ceph version 0.80.5 (38b73c67d375a2552d8ed67843c8a65c2c0feba6)
> >
> > Now I want to upgrade it to Hammer, I saw the documentation on upgrading,
> > it looks straight forward, but I want to know to those who have tried
> > upgrading a production environment, any precautions, caveats, preparation
> > that I need to do before doing it?
> >
> > - Vlad
> > ᐧ
> >
> >
> >
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> > <http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com>
> >
>
>
> ᐧ
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