创建用户
# radosgw-admin user create --uid="testuser" --display-name="testuser"
查看系统所有用户
# radosgw-admin metadata list user
查看指定的用户详细信息
# radosgw-admin user info --uid=testuser
删除用户
# radosgw-admin user rm --uid=testuser
查看系统所有bucket
# radosgw-admin metadata list bucket
查看bucket的状态
# radosgw-admin bucket stats --bucket={bucketname}
删除bucket 及其多有对象
# radosgw-admin bucket rm --bucket={bucketname} --purge-objects --bypass-gc
查看zone，zonegroup，realm
# radosgw-admin zone get >./zone_info
# radosgw-admin zonegroup get >./zonegroup_info
# radosgw-admin realm get >./realm_info
