实际就是拷贝命令：
#client.admin
frompath=‘/etc/ceph/ceph.client.admin.keyring‘
topath=‘ceph.client.admin.keyring
# mon.
frompath=‘/var/lib/ceph/mon/ceph-mon0/keyring‘
topath=‘ceph.mon.keyring‘.format
# bootstrap
frompath=‘/var/lib/ceph/bootstrap-osd/ceph.keyring‘
topath=‘ceph.bootstrap-osd.keyring
frompath=‘/var/lib/ceph/bootstrap-mds/ceph.keyring‘
topath=‘ceph.bootstrap-mds.keyring
原文：http://my.oschina.net/itfanr/blog/396818