What if the upgrade fails, what is the rollback scenario?
On Wed, Jan 27, 2016 at 10:10 PM, <[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 > > > > > > > > _______________________________________________ > > ceph-users mailing list > > [email protected] > > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > > > > ᐧ
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