Hi all, We're looking at readdressing the mons (moving to a different subnet) on one of our clusters. Most of the existing clients are OpenStack guests on Libvirt+KVM and we have a major upgrade to do for those in coming weeks that will mean they have to go down briefly, that will give us an opportunity to update their libvirt config to point them at new mon addresses. We plan to do the upgrade in a rolling fashion and thus need to keep Ceph services up the whole time.
So question is, can we for example have our existing 3 mons on network N1, add another 2 mons on network N2, reconfigure VMs to use the 2 new mon addresses, all whilst not impacting running clients. You can assume we'll setup routing such that the new mons can talk to the old mons, OSDs, and vice-versa. Perhaps flipping the question on its head - if you configure a librbd client with only a subset of mon addresses will it *only* talk to those mons, or will it just use that config to bootstrap and then talk to any mons that are up in the current map? Or likewise, is there anything the client has to talk to the mon master for? -- Cheers, ~Blairo _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
