Hi,
I'm new with ceph and I'm trying to understand how replicating data between two regions/zones work. I've read this http://ceph.com/docs/master/radosgw/federated-config/ and this http://www.sebastien-han.fr/blog/2013/01/28/ceph-geo-replication-sort-of/ and tried that http://blog.kri5.fr/?p=21 Here are my thoughts and please let me know if I'm wrong. 1. Data can be synchronized between two zones - a master and a slave. Can it be reversed? Let's say the master fails and I want to use the slave as the replacement. 2. Data can't be synchronized between two regions. Two regions can only share metadata. Why is that? I know Python and I've seen that radosgw-agent throws an exception in this case ('data sync can only occur between zones in the same region'). But I'm curious what is the reason to do so. Are there any plans to change this behaviour? 3. One cluster can live in many datacenters, but only when they are close and the latency is low. Unfortunately I haven't found any other resources about multiregion config. Perhaps someone could recommend me some other resouces to read... Thanks, Patrycja Szabłowska _______________________________________________ ceph-users mailing list [email protected] http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
