ceph@dfs-1:~$ uname -n
dfs-1

and ceph.conf
[global]
fsid = 596bac2f-4fdf-4236-a3bd-7150fa114c81
mon_initial_members = dfs-1
mon_host = 10.63.2.211
auth_supported = cephx
osd_journal_size = 1024
filestore_xattr_use_omap = true

[client.radosgw.gateway]
host = dfs-1
keyring = /etc/ceph/keyring.radosgw.gateway
rgw_socket_path = /tmp/radosgw.sock
log_file = /var/log/ceph/radosgw.log
rgw_dns_name = dfs-1