ceph详细安装部署教程（单监控节点）

一、前期准备安装ceph-deploy工具

   所有的服务器都是用root用户登录的

1、安装环境

   系统centos-6.5

   设备：1台admin-node (ceph-ploy)  1台 monistor 2台 osd

2、关闭所有节点的防火墙及关闭selinux，重启机器。

 service iptables stop

 sed -i '/SELINUX/s/enforcing/disabled/' /etc/selinux/config

 chkconfig iptables off

3、编辑admin-node节点的ceph yum仓库

vi /etc/yum.repos.d/ceph.repo 

[ceph-noarch]

name=Ceph noarch packages

baseurl=http://ceph.com/rpm/el6/noarch/

enabled=1

gpgcheck=1

type=rpm-md

gpgkey=https://ceph.com/git/?p=ceph.git;a=blob_plain;f=keys/release.asc

4、安装搜狐的epel仓库

   rpm -ivh http://mirrors.sohu.com/fedora-epel/6/x86_64/epel-release-6-8.noarch.rpm

5、更新admin-node节点的yum源 

    yum clean all

    yum update -y

6、在admin-node节点上建立一个ceph集群目录

   mkdir /ceph

   cd  /ceph

7、在admin-node节点上安装ceph部署工具

    yum install ceph-deploy -y

8、配置admin-node节点的hosts文件

  vi /etc/hosts

10.240.240.210 admin-node

10.240.240.211 node1

10.240.240.212 node2

10.240.240.213 node3

二、配置ceph-deploy部署的无密码登录每个ceph节点   

1、在每个Ceph节点上安装一个SSH服务器

   [ceph@node3 ~]$ yum install openssh-server -y

2、配置您的admin-node管理节点与每个Ceph节点无密码的SSH访问。

[root@ceph-deploy ceph]# ssh-keygen

Generating public/private rsa key pair.

Enter file in which to save the key (/root/.ssh/id_rsa): 

Enter passphrase (empty for no passphrase): 

Enter same passphrase again: 

Your identification has been saved in /root/.ssh/id_rsa.

Your public key has been saved in /root/.ssh/id_rsa.pub.

3、复制admin-node节点的秘钥到每个ceph节点

 ssh-copy-id root@admin-node

 ssh-copy-id root@node1

 ssh-copy-id root@node2

 ssh-copy-id root@node3

4、测试每台ceph节点不用密码是否可以登录

 ssh root@node1

 ssh root@node2

 ssh root@node3

5、修改admin-node管理节点的~/.ssh / config文件，这样它登录到Ceph节点创建的用户

Host admin-node

  Hostname admin-node

  User root   

Host node1

  Hostname node1

  User root

Host node2

  Hostname node2

  User root

Host node3

  Hostname node3

  User root

三、用ceph-deploy工具部署ceph集群

1、在admin-node节点上新建一个ceph集群

[root@admin-node ceph]# ceph-deploy new node1

[ceph_deploy.conf][DEBUG ] found configuration file at: /root/.cephdeploy.conf

[ceph_deploy.cli][INFO  ] Invoked (1.5.3): /usr/bin/ceph-deploy new node1

[ceph_deploy.new][DEBUG ] Creating new cluster named ceph

[ceph_deploy.new][DEBUG ] Resolving host node1

[ceph_deploy.new][DEBUG ] Monitor node1 at 10.240.240.211

[ceph_deploy.new][INFO  ] making sure passwordless SSH succeeds

[node1][DEBUG ] connected to host: admin-node 

[node1][INFO  ] Running command: ssh -CT -o BatchMode=yes node1

[ceph_deploy.new][DEBUG ] Monitor initial members are ['node1']

[ceph_deploy.new][DEBUG ] Monitor addrs are ['10.240.240.211']

[ceph_deploy.new][DEBUG ] Creating a random mon key...

[ceph_deploy.new][DEBUG ] Writing initial config to ceph.conf...

[ceph_deploy.new][DEBUG ] Writing monitor keyring to ceph.mon.keyring...

查看生成的文件

[root@admin-node ceph]# ls

ceph.conf  ceph.log  ceph.mon.keyring

2、部署之前确保ceph每个节点没有ceph数据包（先清空之前所有的ceph数据，如果是新装不用执行此步骤，如果是重新部署的话也执行下面的命令）

[root@ceph-deploy ceph]# ceph-deploy purgedata admin-node node1 node2 node3  

[root@ceph-deploy ceph]# ceph-deploy forgetkeys

[root@ceph-deploy ceph]# ceph-deploy purge admin-node node1 node2 node3

  如果是新装的话是没有任何数据的 

3、编辑admin-node节点的ceph配置文件，把下面的配置放入ceph.conf中

   osd pool default size = 2

4、在admin-node节点用ceph-deploy工具向各个节点安装ceph

[root@admin-node ceph]# ceph-deploy install admin-node node1 node2 node3

若果装到某个节点时提示 ImportError: No module named argparse这个报错，手动在报错的节点上执行下面的命令后再重新安装报错节点。

[root@node2 ~]# yum install *argparse* -y

5、添加初始监控节点并收集密钥(新的ceph-deploy v1.1.3以后的版本)。

[root@admin-node ceph]# ceph-deploy mon create-initial  

[ceph_deploy.conf][DEBUG ] found configuration file at: /root/.cephdeploy.conf

[ceph_deploy.cli][INFO  ] Invoked (1.5.3): /usr/bin/ceph-deploy mon create-initial

[ceph_deploy.mon][DEBUG ] Deploying mon, cluster ceph hosts node1

[ceph_deploy.mon][DEBUG ] detecting platform for host node1 ...

[node1][DEBUG ] connected to host: node1 

[node1][DEBUG ] detect platform information from remote host

[node1][DEBUG ] detect machine type

[ceph_deploy.mon][INFO  ] distro info: CentOS 6.4 Final

[node1][DEBUG ] determining if provided host has same hostname in remote

[node1][DEBUG ] get remote short hostname

[node1][DEBUG ] deploying mon to node1

[node1][DEBUG ] get remote short hostname

[node1][DEBUG ] remote hostname: node1

[node1][DEBUG ] write cluster configuration to /etc/ceph/{cluster}.conf

[node1][DEBUG ] create the mon path if it does not exist

[node1][DEBUG ] checking for done path: /var/lib/ceph/mon/ceph-node1/done

[node1][DEBUG ] done path does not exist: /var/lib/ceph/mon/ceph-node1/done

[node1][INFO  ] creating keyring file: /var/lib/ceph/tmp/ceph-node1.mon.keyring

[node1][DEBUG ] create the monitor keyring file

[node1][INFO  ] Running command: ceph-mon --cluster ceph --mkfs -i node1 --keyring /var/lib/ceph/tmp/ceph-node1.mon.keyring

[node1][DEBUG ] ceph-mon: mon.noname-a 10.240.240.211:6789/0 is local, renaming to mon.node1

[node1][DEBUG ] ceph-mon: set fsid to 369daf5a-e844-4e09-a9b1-46bb985aec79

[node1][DEBUG ] ceph-mon: created monfs at /var/lib/ceph/mon/ceph-node1 for mon.node1

[node1][INFO  ] unlinking keyring file /var/lib/ceph/tmp/ceph-node1.mon.keyring

[node1][DEBUG ] create a done file to avoid re-doing the mon deployment

[node1][DEBUG ] create the init path if it does not exist

[node1][DEBUG ] locating the `service` executable...

[node1][INFO  ] Running command: /sbin/service ceph -c /etc/ceph/ceph.conf start mon.node1

[node1][WARNIN] /etc/init.d/ceph: line 15: /lib/lsb/init-functions: No such file or directory

[node1][ERROR ] RuntimeError: command returned non-zero exit status: 1

[ceph_deploy.mon][ERROR ] Failed to execute command: /sbin/service ceph -c /etc/ceph/ceph.conf start mon.node1

[ceph_deploy][ERROR ] GenericError: Failed to create 1 monitors

解决上面报错信息的方法：

手动在mon(node1)节点上执行下面的命令

[root@node1 ~]# yum install redhat-lsb  -y

查看ceph集群目录多了下面几个文件

ceph.bootstrap-mds.keyring

ceph.bootstrap-osd.keyring

ceph.client.admin.keyring 

6、添加osd节点

先添加node2节点，进入node2节点查看未分配的分区

[root@admin-node ceph]# ssh node2

[root@node2 ~]# fdisk -l

Disk /dev/sda: 53.7 GB, 53687091200 bytes

255 heads, 63 sectors/track, 6527 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x000d6653

   Device Boot      Start         End      Blocks   Id  System

/dev/sda1   *           1          39      307200   83  Linux

Partition 1 does not end on cylinder boundary.

/dev/sda2              39        6401    51104768   83  Linux

/dev/sda3            6401        6528     1015808   82  Linux swap / Solaris

Disk /dev/sdb: 21.5 GB, 21474836480 bytes

255 heads, 63 sectors/track, 2610 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x843e46d0

   Device Boot      Start         End      Blocks   Id  System

/dev/sdb1               1        2610    20964793+   5  Extended

/dev/sdb5               1        2610    20964762   83  Linux

[root@node2 ~]# df -h

Filesystem            Size  Used Avail Use% Mounted on

/dev/sda2              48G  2.5G   44G   6% /

tmpfs                 242M   68K  242M   1% /dev/shm

/dev/sda1             291M   33M  243M  12% /boot

查看可以看出第二块硬盘为使用，使用第二块硬盘的sdb5分区作为osd硬盘

在admin-node节点上添加osd设备

[root@admin-node ceph]#ceph-deploy osd prepare node2:/dev/sdb5

[ceph_deploy.conf][DEBUG ] found configuration file at: /root/.cephdeploy.conf

[ceph_deploy.cli][INFO  ] Invoked (1.5.3): /usr/bin/ceph-deploy osd prepare node2:/var/local/osd0 node3:/var/local/osd1

[ceph_deploy.osd][DEBUG ] Preparing cluster ceph disks node2:/var/local/osd0: node3:/var/local/osd1:

[node2][DEBUG ] connected to host: node2 

[node2][DEBUG ] detect platform information from remote host

[node2][DEBUG ] detect machine type

[ceph_deploy.osd][INFO  ] Distro info: CentOS 6.5 Final

[ceph_deploy.osd][DEBUG ] Deploying osd to node2

[node2][DEBUG ] write cluster configuration to /etc/ceph/{cluster}.conf

[node2][WARNIN] osd keyring does not exist yet, creating one

[node2][DEBUG ] create a keyring file

[ceph_deploy.osd][ERROR ] IOError: [Errno 2] No such file or directory: '/var/lib/ceph/bootstrap-osd/ceph.keyring'

[node3][DEBUG ] connected to host: node3 

[node3][DEBUG ] detect platform information from remote host

[node3][DEBUG ] detect machine type

[ceph_deploy.osd][INFO  ] Distro info: CentOS 6.5 Final

[ceph_deploy.osd][DEBUG ] Deploying osd to node3

[node3][DEBUG ] write cluster configuration to /etc/ceph/{cluster}.conf

[node3][WARNIN] osd keyring does not exist yet, creating one

[node3][DEBUG ] create a keyring file

[ceph_deploy.osd][ERROR ] IOError: [Errno 2] No such file or directory: '/var/lib/ceph/bootstrap-osd/ceph.keyring'

[ceph_deploy][ERROR ] GenericError: Failed to create 2 OSDs

解决上面报错信息的方法如下：

上面错误信息的意思是：在创建osd节点的时候在osd节点上缺少/var/lib/ceph/bootstrap-osd/ceph.keyring文件，查看Node1的监控节点发现有这个文件，把Node1节点上的文件拷贝到node2节点上去即可。

在node2节点上建立一个目录：mkdir /var/lib/ceph/bootstrap-osd/。

登录node1：

[root@admin-node ceph]# ssh node1

[root@admin-node ceph]#scp /var/lib/ceph/bootstrap-osd/ceph.keyring root@node2:/var/lib/ceph/bootstrap-osd/

再次执行osd初始化命令

[root@admin-node ceph]# ceph-deploy osd prepare node2:/dev/sdb5

[ceph_deploy.conf][DEBUG ] found configuration file at: /root/.cephdeploy.conf

[ceph_deploy.cli][INFO  ] Invoked (1.5.3): /usr/bin/ceph-deploy osd prepare node2:/dev/sdb5

[ceph_deploy.osd][DEBUG ] Preparing cluster ceph disks node2:/dev/sdb5:

[node2][DEBUG ] connected to host: node2 

[node2][DEBUG ] detect platform information from remote host

[node2][DEBUG ] detect machine type

[ceph_deploy.osd][INFO  ] Distro info: CentOS 6.4 Final

[ceph_deploy.osd][DEBUG ] Deploying osd to node2

[node2][DEBUG ] write cluster configuration to /etc/ceph/{cluster}.conf

[node2][INFO  ] Running command: udevadm trigger --subsystem-match=block --action=add

[ceph_deploy.osd][DEBUG ] Preparing host node2 disk /dev/sdb5 journal None activate False

[node2][INFO  ] Running command: ceph-disk-prepare --fs-type xfs --cluster ceph -- /dev/sdb5

[node2][WARNIN] mkfs.xfs: No such file or directory

[node2][WARNIN] ceph-disk: Error: Command '['/sbin/mkfs', '-t', 'xfs', '-f', '-i', 'size=2048', '--', '/dev/sdb5']' returned non-zero exit status 1

[node2][ERROR ] RuntimeError: command returned non-zero exit status: 1

[ceph_deploy.osd][ERROR ] Failed to execute command: ceph-disk-prepare --fs-type xfs --cluster ceph -- /dev/sdb5

[ceph_deploy][ERROR ] GenericError: Failed to create 1 OSDs

上面的报错信息说明在node2上没有mkfs.xfs文件，需要在node2上安装mkfs.xfs文件。

[root@admin-node ceph]# ssh node2

[root@node2 ~]# yum install xfs* -y

再次执行osd初始化命令可以成功初始化新加入的osd节点

在admin节点上激活osd设备

[root@admin-node ceph]# ceph-deploy osd activate node2:/dev/sdb5

[ceph_deploy.conf][DEBUG ] found configuration file at: /root/.cephdeploy.conf

[ceph_deploy.cli][INFO  ] Invoked (1.5.3): /usr/bin/ceph-deploy osd activate node2:/dev/sdb5

[ceph_deploy.osd][DEBUG ] Activating cluster ceph disks node2:/dev/sdb5:

[node2][DEBUG ] connected to host: node2 

[node2][DEBUG ] detect platform information from remote host

[node2][DEBUG ] detect machine type

[ceph_deploy.osd][INFO  ] Distro info: CentOS 6.4 Final

[ceph_deploy.osd][DEBUG ] activating host node2 disk /dev/sdb5

[ceph_deploy.osd][DEBUG ] will use init type: sysvinit

[node2][INFO  ] Running command: ceph-disk-activate --mark-init sysvinit --mount /dev/sdb5

[node2][WARNIN] got monmap epoch 1

[node2][WARNIN] 2014-06-06 07:34:59.766494 7f4e0c2717a0 -1 journal FileJournal::_open: disabling aio for non-block journal.  Use journal_force_aio to force use of aio anyway

[node2][WARNIN] 2014-06-06 07:34:59.931782 7f4e0c2717a0 -1 journal FileJournal::_open: disabling aio for non-block journal.  Use journal_force_aio to force use of aio anyway

[node2][WARNIN] 2014-06-06 07:34:59.949677 7f4e0c2717a0 -1 filestore(/var/lib/ceph/tmp/mnt.5jdyKF) could not find 23c2fcde/osd_superblock/0//-1 in index: (2) No such file or directory

[node2][WARNIN] 2014-06-06 07:35:00.004350 7f4e0c2717a0 -1 created object store /var/lib/ceph/tmp/mnt.5jdyKF journal /var/lib/ceph/tmp/mnt.5jdyKF/journal for osd.0 fsid 591ef1f4-69f7-442f-ba7b-49cdf6695656

[node2][WARNIN] 2014-06-06 07:35:00.004630 7f4e0c2717a0 -1 auth: error reading file: /var/lib/ceph/tmp/mnt.5jdyKF/keyring: can't open /var/lib/ceph/tmp/mnt.5jdyKF/keyring: (2) No such file or directory

[node2][WARNIN] 2014-06-06 07:35:00.004951 7f4e0c2717a0 -1 created new key in keyring /var/lib/ceph/tmp/mnt.5jdyKF/keyring

[node2][WARNIN] added key for osd.0

[node2][WARNIN] ERROR:ceph-disk:Failed to activate

[node2][WARNIN] Traceback (most recent call last):

[node2][WARNIN]   File "/usr/sbin/ceph-disk", line 2579, in

[node2][WARNIN]     main()

[node2][WARNIN]   File "/usr/sbin/ceph-disk", line 2557, in main

[node2][WARNIN]     args.func(args)

[node2][WARNIN]   File "/usr/sbin/ceph-disk", line 1910, in main_activate

[node2][WARNIN]     init=args.mark_init,

[node2][WARNIN]   File "/usr/sbin/ceph-disk", line 1724, in mount_activate

[node2][WARNIN]     mount_options=mount_options,

[node2][WARNIN]   File "/usr/sbin/ceph-disk", line 1544, in move_mount

[node2][WARNIN]     maybe_mkdir(osd_data)

[node2][WARNIN]   File "/usr/sbin/ceph-disk", line 220, in maybe_mkdir

[node2][WARNIN]     os.mkdir(*a, **kw)

[node2][WARNIN] OSError: [Errno 2] No such file or directory: '/var/lib/ceph/osd/ceph-0'

[node2][ERROR ] RuntimeError: command returned non-zero exit status: 1

[ceph_deploy][ERROR ] RuntimeError: Failed to execute command: ceph-disk-activate --mark-init sysvinit --mount /dev/sdb5

上面报错信息的意思是：在node2节点上没有/var/lib/ceph/osd/ceph-0这个目录，需要在node2节点上创建这个目录。

[root@admin-node ceph]# ssh node2

[root@node2 ~]# mkdir /var/lib/ceph/osd/

[root@node2 ~]# mkdir /var/lib/ceph/osd/ceph-0

再次执行激活osd命令

[root@admin-node ceph]# ceph-deploy osd activate node2:/dev/sdb5

[ceph_deploy.conf][DEBUG ] found configuration file at: /root/.cephdeploy.conf

[ceph_deploy.cli][INFO  ] Invoked (1.5.3): /usr/bin/ceph-deploy osd activate node2:/dev/sdb5

[ceph_deploy.osd][DEBUG ] Activating cluster ceph disks node2:/dev/sdb5:

[node2][DEBUG ] connected to host: node2 

[node2][DEBUG ] detect platform information from remote host

[node2][DEBUG ] detect machine type

[ceph_deploy.osd][INFO  ] Distro info: CentOS 6.4 Final

[ceph_deploy.osd][DEBUG ] activating host node2 disk /dev/sdb5

[ceph_deploy.osd][DEBUG ] will use init type: sysvinit

[node2][INFO  ] Running command: ceph-disk-activate --mark-init sysvinit --mount /dev/sdb5

[node2][WARNIN] /etc/init.d/ceph: line 15: /lib/lsb/init-functions: No such file or directory

[node2][WARNIN] ceph-disk: Error: ceph osd start failed: Command '['/sbin/service', 'ceph', 'start', 'osd.0']' returned non-zero exit status 1

[node2][ERROR ] RuntimeError: command returned non-zero exit status: 1

[ceph_deploy][ERROR ] RuntimeError: Failed to execute command: ceph-disk-activate --mark-init sysvinit --mount /dev/sdb5

上面报错信息的解决方法：

[root@admin-node ceph]# ssh node2

[root@node2 ~]# yum install redhat-lsb  -y

再次执行激活osd命令osd节点可以正常运行

[root@admin-node ceph]# ceph-deploy osd activate node2:/dev/sdb5

[ceph_deploy.conf][DEBUG ] found configuration file at: /root/.cephdeploy.conf

[ceph_deploy.cli][INFO  ] Invoked (1.5.3): /usr/bin/ceph-deploy osd activate node2:/dev/sdb5

[ceph_deploy.osd][DEBUG ] Activating cluster ceph disks node2:/dev/sdb5:

[node2][DEBUG ] connected to host: node2 

[node2][DEBUG ] detect platform information from remote host

[node2][DEBUG ] detect machine type

[ceph_deploy.osd][INFO  ] Distro info: CentOS 6.4 Final

[ceph_deploy.osd][DEBUG ] activating host node2 disk /dev/sdb5

[ceph_deploy.osd][DEBUG ] will use init type: sysvinit

[node2][INFO  ] Running command: ceph-disk-activate --mark-init sysvinit --mount /dev/sdb5

[node2][DEBUG ] === osd.0 === 

[node2][DEBUG ] Starting Ceph osd.0 on node2...

[node2][DEBUG ] starting osd.0 at :/0 osd_data /var/lib/ceph/osd/ceph-0 /var/lib/ceph/osd/ceph-0/journal

[node2][WARNIN] INFO:ceph-disk:ceph osd.0 already mounted in position; unmounting ours.

[node2][WARNIN] create-or-move updating item name 'osd.0' weight 0.02 at location {host=node2,root=default} to crush map

[node2][INFO  ] checking OSD status...

[node2][INFO  ] Running command: ceph --cluster=ceph osd stat --format=json

Unhandled exception in thread started by 

Error in sys.excepthook:

Original exception was:

[root@admin-node ceph]# 

7、复制ceph配置文件及密钥到mon、osd节点

[root@admin-node ceph]# ceph-deploy admin admin-node node1 node2 node3

[ceph_deploy.conf][DEBUG ] found configuration file at: /root/.cephdeploy.conf

[ceph_deploy.cli][INFO  ] Invoked (1.5.3): /usr/bin/ceph-deploy admin admin-node node1 node2 node3

[ceph_deploy.admin][DEBUG ] Pushing admin keys and conf to admin-node

[admin-node][DEBUG ] connected to host: admin-node 

[admin-node][DEBUG ] detect platform information from remote host

[admin-node][DEBUG ] detect machine type

[admin-node][DEBUG ] get remote short hostname

[admin-node][DEBUG ] write cluster configuration to /etc/ceph/{cluster}.conf

[ceph_deploy.admin][DEBUG ] Pushing admin keys and conf to node1

[node1][DEBUG ] connected to host: node1 

[node1][DEBUG ] detect platform information from remote host

[node1][DEBUG ] detect machine type

[node1][DEBUG ] get remote short hostname

[node1][DEBUG ] write cluster configuration to /etc/ceph/{cluster}.conf

[ceph_deploy.admin][DEBUG ] Pushing admin keys and conf to node2

[node2][DEBUG ] connected to host: node2 

[node2][DEBUG ] detect platform information from remote host

[node2][DEBUG ] detect machine type

[node2][DEBUG ] get remote short hostname

[node2][DEBUG ] write cluster configuration to /etc/ceph/{cluster}.conf

[ceph_deploy.admin][DEBUG ] Pushing admin keys and conf to node3

[node3][DEBUG ] connected to host: node3 

[node3][DEBUG ] detect platform information from remote host

[node3][DEBUG ] detect machine type

[node3][DEBUG ] get remote short hostname

[node3][DEBUG ] write cluster configuration to /etc/ceph/{cluster}.conf

Unhandled exception in thread started by 

Error in sys.excepthook:

Original exception was:

8、确保你有正确的ceph.client.admin.keyring权限

[root@admin-node ceph]# chmod +r /etc/ceph/ceph.client.admin.keyring

9、查看集群运行状态

[root@admin-node ceph]# ceph health

HEALTH_OK

11、添加一个元数据服务器

[root@admin-node ceph]# ceph-deploy mds create node1

[ceph_deploy.conf][DEBUG ] found configuration file at: /root/.cephdeploy.conf

[ceph_deploy.cli][INFO  ] Invoked (1.5.3): /usr/bin/ceph-deploy mds create node1

[ceph_deploy.mds][DEBUG ] Deploying mds, cluster ceph hosts node1:node1

[node1][DEBUG ] connected to host: node1 

[node1][DEBUG ] detect platform information from remote host

[node1][DEBUG ] detect machine type

[ceph_deploy.mds][INFO  ] Distro info: CentOS 6.4 Final

[ceph_deploy.mds][DEBUG ] remote host will use sysvinit

[ceph_deploy.mds][DEBUG ] deploying mds bootstrap to node1

[node1][DEBUG ] write cluster configuration to /etc/ceph/{cluster}.conf

[node1][DEBUG ] create path if it doesn't exist

[ceph_deploy.mds][ERROR ] OSError: [Errno 2] No such file or directory: '/var/lib/ceph/mds/ceph-node1'

[ceph_deploy][ERROR ] GenericError: Failed to create 1 MDSs

解决上面报错的方法：

[root@admin-node ceph]# ssh node1

Last login: Fri Jun  6 06:41:25 2014 from 10.241.10.2

[root@node1 ~]# mkdir /var/lib/ceph/mds/

[root@node1 ~]# mkdir /var/lib/ceph/mds/ceph-node1

再次执行元数据服务器创建完成

[root@admin-node ceph]# ceph-deploy mds create node1

[ceph_deploy.conf][DEBUG ] found configuration file at: /root/.cephdeploy.conf

[ceph_deploy.cli][INFO  ] Invoked (1.5.3): /usr/bin/ceph-deploy mds create node1

[ceph_deploy.mds][DEBUG ] Deploying mds, cluster ceph hosts node1:node1

[node1][DEBUG ] connected to host: node1 

[node1][DEBUG ] detect platform information from remote host

[node1][DEBUG ] detect machine type

[ceph_deploy.mds][INFO  ] Distro info: CentOS 6.4 Final

[ceph_deploy.mds][DEBUG ] remote host will use sysvinit

[ceph_deploy.mds][DEBUG ] deploying mds bootstrap to node1

[node1][DEBUG ] write cluster configuration to /etc/ceph/{cluster}.conf

[node1][DEBUG ] create path if it doesn't exist

[node1][INFO  ] Running command: ceph --cluster ceph --name client.bootstrap-mds --keyring /var/lib/ceph/bootstrap-mds/ceph.keyring auth get-or-create mds.node1 osd allow rwx mds allow mon allow profile mds -o /var/lib/ceph/mds/ceph-node1/keyring

[node1][INFO  ] Running command: service ceph start mds.node1

[node1][DEBUG ] === mds.node1 === 

[node1][DEBUG ] Starting Ceph mds.node1 on node1...

[node1][DEBUG ] starting mds.node1 at :/0

再次查看运行状态

[root@admin-node ceph]# ceph -w

    cluster 591ef1f4-69f7-442f-ba7b-49cdf6695656

     health HEALTH_OK

     monmap e1: 1 mons at {node1=10.240.240.211:6789/0}, election epoch 2, quorum 0 node1

     mdsmap e4: 1/1/1 up {0=node1=up:active}

     osdmap e9: 2 osds: 2 up, 2 in

      pgmap v22: 192 pgs, 3 pools, 1884 bytes data, 20 objects

            10310 MB used, 30616 MB / 40926 MB avail

                 192 active+clean

2014-06-06 08:12:49.021472 mon.0 [INF] pgmap v22: 192 pgs: 192 active+clean; 1884 bytes data, 10310 MB used, 30616 MB / 40926 MB avail; 10 B/s wr, 0 op/s

2014-06-06 08:14:47.932311 mon.0 [INF] pgmap v23: 192 pgs: 192 active+clean; 1884 bytes data, 10310 MB used, 30615 MB / 40926 MB avail