There's also an additional issue which made us activate CEPH_AUTO_RESTART_ON_UPGRADE=yes (and of course, not have automatic updates of Ceph): When using compression e.g. with Snappy, it seems that already running OSDs which try to dlopen() the snappy library for some version upgrades become unhappy if the version mismatches expectation (i.e. symbols don't match). So effectively, it seems that in some cases you can not get around restarting the OSDs when updating the corresponding packages. Cheers, Oliver Am 03.12.18 um 15:51 schrieb Dan van der Ster:
It's not that simple.... see http://tracker.ceph.com/issues/21672 For the 12.2.8 to 12.2.10 upgrade it seems the selinux module was updated -- so the rpms restart the ceph.target. What's worse is that this seems to happen before all the new updated files are in place. Our 12.2.8 to 12.2.10 upgrade procedure is: systemctl stop ceph.target yum update systemctl start ceph.target -- Dan On Mon, Dec 3, 2018 at 12:42 PM Paul Emmerich <paul.emmerich@xxxxxxxx> wrote:Upgrading Ceph packages does not restart the services -- exactly for this reason. This means there's something broken with your yum setup if the services are restarted when only installing the new version. Paul -- Paul Emmerich Looking for help with your Ceph cluster? Contact us at https://croit.io croit GmbH Freseniusstr. 31h 81247 München www.croit.io Tel: +49 89 1896585 90 Am Mo., 3. Dez. 2018 um 11:56 Uhr schrieb Jan Kasprzak <kas@xxxxxxxxxx>:Hello, ceph users, I have a small(-ish) Ceph cluster, where there are osds on each host, and in addition to that, there are mons on the first three hosts. Is it possible to upgrade the cluster to Luminous without service interruption? I have tested that when I run "yum --enablerepo Ceph update" on a mon host, the osds on that host remain down until all three mons are upgraded to Luminous. Is it possible to upgrade ceph-mon only, and keep ceph-osd running the old version (Jewel in my case) as long as possible? It seems RPM dependencies forbid this, but with --nodeps it could be done. Is there a supported way how to upgrade host running both mon and osd to Luminous? Thanks, -Yenya -- | Jan "Yenya" Kasprzak <kas at {fi.muni.cz - work | yenya.net - private}> | | http://www.fi.muni.cz/~kas/ GPG: 4096R/A45477D5 | This is the world we live in: the way to deal with computers is to google the symptoms, and hope that you don't have to watch a video. --P. Zaitcev _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com_______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com_______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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