Hi, We have been running Ceph/Radosgw version 0.80.7 (Giant) and stored quite some amount of data in it. We are only using ceph as an object store via radosgw. Last week cheph-radosgw daemon suddenly refused to start (with logs only showing "initialization timeout" error on Centos 7). This triggers me to install a newer instance --- Ceph/Radosgw version 0.94.2 (Hammer). The new instance has a different set of key rings by default. The next step is to have all the data migrated. Does anyone know how to get the existing data out of the old ceph cluster (Giant) and into the new instance (Hammer)? Please note that in the old three-node cluster ceph osd is still running but radosgw is not. Any suggestion will be greatly appreciated. Thanks.
Regards, Fangzhe Chang
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