Thx Wido, I needed this confirmations - thanks! On 4 March 2015 at 17:49, Wido den Hollander <w...@42on.com> wrote:
> On 03/04/2015 05:44 PM, Robert LeBlanc wrote: > > If I remember right, someone has done this on a live cluster without > > any issues. I seem to remember that it had a fallback mechanism if the > > OSDs couldn't be reached on the cluster network to contact them on the > > public network. You could test it pretty easily without much impact. > > Take one OSD that has both networks and configure it and restart the > > process. If all the nodes (specifically the old ones with only one > > network) is able to connect to it, then you are good to go by > > restarting one OSD at a time. > > > > In the OSDMap each OSD has a public and cluster network address. If the > cluster network address is not set, replication to that OSD will be done > over the public network. > > So you can push a new configuration to all OSDs and restart them one by > one. > > Make sure the network is ofcourse up and running and it should work. > > > On Wed, Mar 4, 2015 at 4:17 AM, Andrija Panic <andrija.pa...@gmail.com> > wrote: > >> Hi, > >> > >> I'm having a live cluster with only public network (so no explicit > network > >> configuraion in the ceph.conf file) > >> > >> I'm wondering what is the procedure to implement dedicated > >> Replication/Private and Public network. > >> I've read the manual, know how to do it in ceph.conf, but I'm wondering > >> since this is already running cluster - what should I do after I change > >> ceph.conf on all nodes ? > >> Restarting OSDs one by one, or... ? Is there any downtime expected ? - > for > >> the replication network to actually imlemented completely. > >> > >> > >> Another related quetion: > >> > >> Also, I'm demoting some old OSDs, on old servers, I will have them all > >> stoped, but would like to implement replication network before actually > >> removing old OSDs from crush map - since lot of data will be moved > arround. > >> > >> My old nodes/OSDs (that will be stoped before I implement replication > >> network) - do NOT have dedicated NIC for replication network, in > contrast to > >> new nodes/OSDs. So there will be still reference to these old OSD in the > >> crush map. > >> Will this be a problem - me changing/implementing replication network > that > >> WILL work on new nodes/OSDs, but not on old ones since they don't have > >> dedicated NIC ? I guess not since old OSDs are stoped anyway, but would > like > >> opinion. > >> > >> Or perhaps i might remove OSD from crush map with prior seting of > >> nobackfill and norecover (so no rebalancing happens) and then > implement > >> replication netwotk? > >> > >> > >> Sorry for old post, but... > >> > >> Thanks, > >> -- > >> > >> Andrija Panić > >> > >> _______________________________________________ > >> ceph-users mailing list > >> ceph-users@lists.ceph.com > >> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > >> > > _______________________________________________ > > ceph-users mailing list > > ceph-users@lists.ceph.com > > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > > > > > -- > Wido den Hollander > 42on B.V. > Ceph trainer and consultant > > Phone: +31 (0)20 700 9902 > Skype: contact42on > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > -- Andrija Panić
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