Ceph Monitor启动异常?报错

我采用如下方式配置ceph 监视器：

1.配置/etc/ceph/ceph.conf

[global]
fsid = 8587ec10-fe1a-41f5-9795-9d38ef20b493
mon_initial_members = mdsnode
mon_host = 58.220.31.61
auth_cluster_required = cephx
auth_service_required = cephx
auth_client_required = cephx
filestore_xattr_use_omap = true
osd_pool_default_size = 2
osd_pool_default_min_size = 1
osd_journal_size = 10000
osd_pool_default_pg_num = 366
osd_pool_default_pgp_num = 366
public_network=58.220.31.0/24

[mon]
mon_data = /data/ceph-mdsnode

[mon.mdsnode]
host=mdsnode
mon_aadr=58.220.31.61

sudo ceph-authtool --create-keyring /tmp/ceph.mon.keyring --gen-key -n mon. --cap mon 'allow *'

sudo ceph-authtool --create-keyring /etc/ceph/ceph.client.admin.keyring --gen-key -n client.admin --set-uid=0 --cap mon 'allow *' --cap osd 'allow *' --cap mds 'allow'

1. 把  client.admin  密钥加入  ceph.mon.keyring  

sudo ceph-authtool /tmp/ceph.mon.keyring --import-keyring /etc/ceph/ceph.client.admin.keyring

5用规划好的主机名、对应 IP 地址、和 FSID 生成一个监视器图，并保存为 /tmp/monmap 。

monmaptool --create --add mdsnode 58.220.31.61 --fsid 8587ec10-fe1a-41f5-9795-9d38ef20b493 /tmp/monmap

6. 用监视器图和密钥环组装守护进程所需的初始数据

sudo ceph-mon --mkfs -i mdsnode --monmap /tmp/monmap  --keyring /tmp/ceph.mon.keyring

1. 启动监视器

sudo /etc/init.d/ceph start mon.mdsnode

结果，命令执行后效果如下：

[ceph@mdsnode ceph]$ sudo /etc/init.d/ceph start mon.mdsnode
=== mon.mdsnode === 
Starting Ceph mon.mdsnode on mdsnode...already running
[ceph@mdsnode ceph]$ ceph -s
2015-08-31 11:32:17.378858 7f543b014700 -1 monclient(hunting): ERROR: missing keyring, cannot use cephx for authentication
2015-08-31 11:32:17.378864 7f543b014700  0 librados: client.admin initialization error (2) No such file or directory
Error connecting to cluster: ObjectNotFound
[ceph@mdsnode ceph]$

1. monclient(hunting): ERROR: missing keyring, cannot use cephx for authentication

2. librados: client.admin initialization error (2) No such file or directory

@crasylph @oscfox @zetrov