Most production clusters are large enough that you don't have to bring down the entire cluster to do maintenance on particular machines. If your reconfiguring the entire network, that's a bit more involved. I'm not sure what your cluster looks like, so I can't advise. However, you mention changing IP addresses. Changing the IP addresses for the OSDs is okay, but you want to be careful when changing them for monitors. See http://ceph.com/docs/master/rados/operations/add-or-rm-mons/#changing-a-monitor-s-ip-address. Since monitors use the public network, this shouldn't be a problem in your case. You can change the config files if you've include OSD entries in your config file. You may also change the settings at runtime. See http://ceph.com/docs/master/rados/configuration/ceph-conf/#runtime-changes.
On Tue, Dec 31, 2013 at 9:35 AM, Scottix <scot...@gmail.com> wrote: > The way I have done it is so the osd don't get set out. > > Check the link below > > > http://ceph.com/docs/master/rados/troubleshooting/troubleshooting-osd/#stopping-w-out-rebalancing > > > On Tue, Dec 31, 2013 at 12:43 AM, James Harper < > james.har...@bendigoit.com.au> wrote: > >> I need to shut down ceph for maintenance to make some hardware changes. >> Is it sufficient to just stop all services on all nodes, or is there a way >> to put the whole cluster into standby or something first? >> >> And when things come back up, IP addresses on the cluster network will be >> different (public network will not change though). Is it sufficient to just >> change the config files and the osd's will register themselves correctly, >> or is there more involved? >> >> Thanks >> >> James >> _______________________________________________ >> ceph-users mailing list >> ceph-users@lists.ceph.com >> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >> > > > > -- > Follow Me: @Scottix <http://www.twitter.com/scottix> > http://about.me/scottix > scot...@gmail.com > > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > > -- John Wilkins Senior Technical Writer Intank john.wilk...@inktank.com (415) 425-9599 http://inktank.com
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