That was my thought, yes - I found this blog that confirms what you are saying I guess: http://www.sebastien-han.fr/blog/2012/07/29/tip-ceph-public-slash-private-network-configuration/ I will do that... Thx
I guess it doesnt matter, since my Crush Map will still refernce old OSDs, that are stoped (and cluster resynced after that) ? Thx again for the help On 4 March 2015 at 17:44, Robert LeBlanc <rob...@leblancnet.us> 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. > > 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 > > > -- Andrija Panić
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