ceph之ceph-client安裝

1、安裝ceph-client

ceph-deploy  install ceph-client

 

2、創建塊設備

[root@mon1 ~]# rbd create test1 --image-format 1 --size 5G

rbd: image format 1 is deprecated
[root@mon1 ~]#

 

[root@mon1 ~]# rbd info test1
rbd image 'test1':
    size 5120 MB in 1280 objects
    order 22 (4096 kB objects)
    block_name_prefix: rb.0.20bd3.2ae8944a
    format: 1
[root@mon1 ~]#

 

 

3、映射

[root@mon1 ~]# rbd map test1
/dev/rbd0

 

[root@mon1 ~]# rbd showmapped
id pool image snap device
0  rbd  test1 -    /dev/rbd0

 

4、格式化

[cephuser@ceph-admin rbd]$ sudo mkfs.ext4 -q /dev/rbd/rbd/test1

 

[root@mon1 ~]# lsblk
NAME   MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sr0     11:0    1  422K  0 rom
vda    253:0    0   20G  0 disk
└─vda1 253:1    0   20G  0 part /
rbd0   252:0    0    5G  0 disk

 

5、掛載

[root@mon1 ~]# mkdir -p /mnt/rbd-test1
[root@mon1 ~]# mount /dev/rbd0 /mnt/rbd-test1/

 

6、查看

[root@mon1 ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sr0 11:0 1 422K 0 rom
vda 253:0 0 20G 0 disk
└─vda1 253:1 0 20G 0 part /
rbd0 252:0 0 5G 0 disk /mnt/rbd-test1

 

7、設置自動map

[root@mon1 ~]# vim /etc/ceph/rbdmap

rbd/test1   id=admin,keyring=/etc/ceph/ceph.client.admin.keyring

 

8、修改fstab

[root@mon1 ~]# vim /etc/fstab
/dev/rbd/rbd/test1  /mnt/rbd-test1  ext4    defaults,noatime,_netdev         0 0

 

9、設置rbdmap開機啟動

systemctl enable rbdmap

ps:設置開機啟動后，磁盤總是掛載不上，發現systemctl is-enable rbdmap是static狀態，不是enable，經查，這里的static是指Unit的文件中沒有[Install]區域，因此需要添加此區域，即

vim /usr/lib/systemd/system/rbdmap.servic
[Install]
WantedBy=multi-user.target

 

 

 

10、重啟

reboot或systemctl restart rbdmap

 

 

11、rbd擴容

[root@mon1 ~]# rbd resize rbd/test1 --size 10G
Resizing image: 100% complete...done.

[root@mon1 ~]# resize2fs /mnt/rbd-test1 resize2fs 1.42.9 (28-Dec-2013) open: Is a directory while opening /mnt/rbd-test1 [root@mon1 ~]# resize2fs /dev/rbd/rbd/test1 resize2fs 1.42.9 (28-Dec-2013) Filesystem at /dev/rbd/rbd/test1 is mounted on /mnt/rbd-test1; on-line resizing required old_desc_blocks = 1, new_desc_blocks = 2 The filesystem on /dev/rbd/rbd/test1 is now 2621440 blocks long.

 

12、刪除rbd

[root@mon1 ~]# umount /mnt/rbd-test1/ [root@mon1 ~]# vim /etc/ceph/rbdmap rbd/test1 id=admin,keyring=/etc/ceph/ceph.client.admin.keyring #刪除 [root@mon1 ~]# vim /etc/fstab

/dev/rbd/rbd/test1  /mnt/rbd-test1  ext4    defaults,noatime,_netdev         0 0   #刪除

 

13、創建快照

[root@mon1 ~]# rbd snap create test3@snap-test3

 

14、查看快照

[root@mon1 ~]# rbd snap ls test3
SNAPID NAME          SIZE
     4 snap-test3 2048 MB

 

15、快照回滾

[root@mon1 ~]# rbd snap rollback test3@snap-test3
Rolling back to snapshot: 100% complete...done.

ps：回滾以后要重新掛載卷

 

16、刪除快照

[root@mon1 ~]# rbd snap rm test3@snap-test3
刪除快照是指刪除某個特定的快照

 

17、清除快照

[root@mon1 ~]# rbd snap purge test3
Removing all snapshots: 100% complete...done.

ps:清除快照是指刪除該rbd的所有快照

 

18、保護快照

[root@mon1 ~]# rbd snap protect test4@snap-test

ps:被保護的快照的format類型必須是format 2

 

19、快照克隆

[root@mon1 ~]# rbd clone test4@snap-test snap-test-clone

[root@mon1 ~]# rbd list
chen
snap-test-clone
test
test2
test4
[root@mon1 ~]#