Dan van der Ster wrote: : 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 Yes, this looks reasonable. Except that when upgrading from Jewel, even after the restart the OSDs do not work until _all_ mons are upgraded. So effectively if a PG happens to be placed on the mon hosts only, there will be service outage during upgrade from Jewel. So I guess the upgrade procedure described here: http://docs.ceph.com/docs/master/releases/luminous/#upgrade-from-jewel-or-kraken is misleading - the mons and osds get restarted anyway by the package upgrade itself. The user should be warned that for this reason the package upgrades should be run sequentially. And that the upgrade is not possible without service outage, when there are OSDs on the mon hosts and when the cluster is running under SELinux. Also, there is another important thing omitted by the above upgrade procedure: After "ceph osd require-osd-release luminous" I have got HEALTH_WARN saying "application not enabled on X pool(s)". I have fixed this by running the following scriptlet: ceph osd pool ls | while read pool; do ceph osd pool application enable $pool rbd; done (yes, all of my pools are used for rbd for now). Maybe this should be fixed in the release notes as well. Thanks, -Yenya : 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 -- | 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
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