Ceph : Use as File System2018/12/25 |
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Configure Clients to use Ceph Storage like follows.
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+--------------------+ | +--------------------+
| [dlp.srv.world] |10.0.0.30 | 10.0.0.x| [client.srv.world] |
| Ceph-Deploy +-----------+-----------+ |
| | | | |
+--------------------+ | +--------------------+
+----------------------------+----------------------------+
| | |
|10.0.0.51 |10.0.0.52 |10.0.0.53
+-----------+-----------+ +-----------+-----------+ +-----------+-----------+
| [node01.srv.world] | | [node02.srv.world] | | [node03.srv.world] |
| Object Storage +----+ Object Storage +----+ Object Storage |
| Monitor Daemon | | | | |
| | | | | |
+-----------------------+ +-----------------------+ +-----------------------+
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For example, mount as Filesystem on a Client.
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| [1] | Configure MDS (MetaData Server) on a Node which you'd like to set MDS. It sets to [node01] on this exmaple. |
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ubuntu@dlp:~/ceph$ ceph-deploy mds create node01 |
| [2] | Create at least 2 RADOS pools on MDS Node and activate MetaData Server. For pg_num which is specified at the end of a creating command,
refer to official document and decide appropriate value. ⇒ http://docs.ceph.com/docs/master/rados/operations/placement-groups/ |
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# create pools ubuntu@node01:~$ sudo ceph osd pool create cephfs_data 128 pool 'cephfs_data' created ubuntu@node01:~$ sudo ceph osd pool create cephfs_metadata 8 pool 'cephfs_metadata' created # enable pools ubuntu@node01:~$ sudo ceph fs new cephfs cephfs_metadata cephfs_data new fs with metadata pool 4 and data pool 3 # show list ubuntu@node01:~$ sudo ceph fs ls name: cephfs, metadata pool: cephfs_metadata, data pools: [cephfs_data ] ubuntu@node01:~$ sudo ceph mds stat cephfs-1/1/1 up {0=node01=up:active} |
| [3] | Mount CephFS on a Client. |
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root@client:~#
apt -y install ceph-fuse # get admin key root@client:~# ssh ubuntu@node01.srv.world "sudo ceph-authtool -p /etc/ceph/ceph.client.admin.keyring" > admin.key ubuntu@node01.srv.world's password: root@client:~# chmod 600 admin.key
mount -t ceph node01.srv.world:6789:/ /mnt -o name=admin,secretfile=admin.key root@client:~# df -hT Filesystem Type Size Used Avail Use% Mounted on udev devtmpfs 1.9G 0 1.9G 0% /dev tmpfs tmpfs 395M 624K 394M 1% /run /dev/mapper/ubuntu--vg-root ext4 29G 2.3G 25G 9% / tmpfs tmpfs 2.0G 0 2.0G 0% /dev/shm tmpfs tmpfs 5.0M 0 5.0M 0% /run/lock tmpfs tmpfs 2.0G 0 2.0G 0% /sys/fs/cgroup tmpfs tmpfs 395M 0 395M 0% /run/user/0 10.0.0.51:6789:/ ceph 8.5G 0 8.5G 0% /mnt |
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