ceph 14.2.10 aarch64 非集群内 客户端 挂载块设备

集群上的机器测试

 706  ceph pool create block-pool 64 64
  707  ceph osd  pool create block-pool 64 64
  708   ceph osd pool application enable block-pool rbd
  709  rbd create vdisk1 --size 4G --pool block-pool --image-format 2 --image-feature layering
  710   rbd map block-pool/vdisk1
  711  mkdir /mnt/vdisk1
  712  mount /dev/rbd1 /mnt/vdisk1
  713  mkfs.xfs /dev/rbd1
  714  mount /dev/rbd1 /mnt/vdisk1
 

直接搬集群上的操作方式（失败）

[root@ceph-client mnt]# rbd map block-pool/vdisk1
unable to get monitor info from DNS SRV with service name: ceph-mon
In some cases useful info is found in syslog - try "dmesg | tail".
rbd: map failed: 2023-11-14 15:51:13.809 ffff8d4e7010 -1 failed for service _ceph-mon._tcp
(2) No such file or directory
 

报错连接不上mon

-m指定集群IP

[root@ceph-client mnt]# rbd map block-pool/vdisk1 -m 172.17.163.105,172.17.112.206
rbd: sysfs write failed
2023-11-14 15:55:34.873 ffff79be78c0 -1 monclient(hunting): handle_auth_bad_method server allowed_methods [2] but i only support [2,1]
rbd: couldn't connect to the cluster!
In some cases useful info is found in syslog - try "dmesg | tail".
rbd: map failed: (22) Invalid argument
[root@ceph-client mnt]# rbd map block-pool/vdisk1 -m 172.17.163.105
rbd: sysfs write failed
2023-11-14 15:58:45.753 ffffb09918c0 -1 monclient(hunting): handle_auth_bad_method server allowed_methods [2] but i only support [2,1]
rbd: couldn't connect to the cluster!
In some cases useful info is found in syslog - try "dmesg | tail".
rbd: map failed: (22) Invalid argumen

dmesg日志 no secret set (for auth_x protocol)

[91158.067305] libceph: no secret set (for auth_x protocol)
[91158.068206] libceph: error -22 on auth protocol 2 init
 

授权

查看pool

查看rbd image

生成授权

[root@ceph-0 ~]# ceph auth get-or-create client.blockuser mon 'allow r' osd 'allow * pool=block-pool'
[client.blockuser]
    key = AQDNLFNlZXSwERAA9uYYz7UdIKmuO1bSiSmEVg==

导出授权

[root@ceph-0 ~]# ceph auth get client.blockuser
exported keyring for client.blockuser
[client.blockuser]
    key = AQDNLFNlZXSwERAA9uYYz7UdIKmuO1bSiSmEVg==
    caps mon = "allow r"
    caps osd = "allow * pool=block-pool"

导出配置文件

[root@ceph-0 ~]# ceph auth get client.blockuser -o /etc/ceph/ceph.client.blockuser.keyring
exported keyring for client.blockuser

测试配置文件（成功）

[root@ceph-0 ~]# ceph --user blockuser -s
  cluster:
    id:     ff72b496-d036-4f1b-b2ad-55358f3c16cb
    health: HEALTH_ERR
            mon ceph-0 is very low on available space
 
  services:
    mon: 4 daemons, quorum ceph-3,ceph-1,ceph-0,ceph-2 (age 30h)
    mgr: ceph-0(active, since 3d), standbys: ceph-1, ceph-3, ceph-2
    mds:  4 up:standby
    osd: 4 osds: 3 up (since 2d), 3 in (since 2d)
    rgw: 4 daemons active (ceph-0, ceph-1, ceph-2, ceph-3)
 
  task status:
 
  data:
    pools:   5 pools, 192 pgs
    objects: 201 objects, 6.4 MiB
    usage:   3.2 GiB used, 297 GiB / 300 GiB avail
    pgs:     192 active+clean

拷贝配置文件到客户端

[root@ceph-0 ~]# scp /etc/ceph/ceph.client.blockuser.keyring root@ceph-client:/etc/ceph/

在客户端验证一次（需要指定-m参数，成功）

[root@ceph-client ceph]# ceph --user blockuser -s -m ceph-0
  cluster:
    id:     ff72b496-d036-4f1b-b2ad-55358f3c16cb
    health: HEALTH_ERR
            mon ceph-0 is very low on available space
 
  services:
    mon: 4 daemons, quorum ceph-3,ceph-1,ceph-0,ceph-2 (age 30h)
    mgr: ceph-0(active, since 3d), standbys: ceph-1, ceph-3, ceph-2
    mds:  4 up:standby
    osd: 4 osds: 3 up (since 2d), 3 in (since 2d)
    rgw: 4 daemons active (ceph-0, ceph-1, ceph-2, ceph-3)
 
  task status:
 
  data:
    pools:   5 pools, 192 pgs
    objects: 201 objects, 6.4 MiB
    usage:   3.2 GiB used, 297 GiB / 300 GiB avail
    pgs:     192 active+clean

客户端映射块设备（集群地址）

[root@ceph-client ceph]# rbd map block-pool/vdisk1 --user blockuser -m ceph-0,ceph-1,ceph-2,ceph-3
/dev/rbd0

可以看到成功映射出/dev/rbd0 块设备

格式化块设备

mkfs.xfs /dev/rbd0 -f

挂载块设备(成功)

参考

分布式存储系统之Ceph集群RBD基础使用 - Linux-1874 - 博客园 (cnblogs.com)