I'd do it like this: * create 2 new mons with the new IPs * update all clients to the 3 new mon IPs * delete two old mons * create 1 new mon * delete the last old mon I think it's easier to create/delete mons than to change the IP of an existing mon. This doesn't even incur a downtime for the clients because they get notified about the new mons. For the OSDs: stop OSDs, change IP, start OSDs Don't change the IP of a running OSD, they don't like that 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 On Wed, Dec 19, 2018 at 8:55 PM Marcus Müller <mueller.marcus@xxxxxxxxx> wrote: > > Hi all, > > we’re running a ceph hammer cluster with 3 mons and 24 osds (3 same nodes) and need to migrate all servers to a new datacenter and change the IPs of the nodes. > > I found this tutorial: http://docs.ceph.com/docs/hammer/rados/operations/add-or-rm-mons/#changing-a-monitor-s-ip-address-the-messy-way regarding the mons (should be easy) but nothing about the osds and which steps to do if you need to shutdown and migrate the cluster to a new datacenter. > > Has anyone some ideas, how to and which steps I need? > > Regards, > Marcus > _______________________________________________ > 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
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