Ceph » Linux kernel client

Sanjay Verma wrote:

I am unable to mount a Ceph FS on a Ubuntu 16.04.5 LTS ( 4.4.0-141-generic #167-Ubuntu SMP).

ERROR:

root@sanjay33-ubt-worker-1:~# mount -t ceph 10.41.11.177:6789/ /mnt/ceph -o name=admin,secretfile=/root/client.admin --verbose
source mount path was not specified
failed to resolve source__
root@sanjay33-ubt-worker-1:~#

The details of Ceph FS cluster
------------------------------
root@sanverm22-master:~# ceph -s
cluster:
id: 32ae0983-9797-40ec-bf5e-2c03d15c7e50
health: HEALTH_WARN
crush map has straw_calc_version=0
no active mgr
too few PGs per OSD (24 < min 30)

services:
mon: 3 daemons, quorum sanverm22-worker-1,sanverm22-worker-2,sanverm22-worker-3
mgr: no daemons active
mds: cephfs-1/1/1 up {0=sanverm22-worker-1.fyre.ibm.com=up:active}
osd: 3 osds: 3 up, 3 in

data:
pools: 3 pools, 24 pgs
objects: 66 objects, 107MiB
usage: 3.31GiB used, 146GiB / 150GiB avail
pgs: 24 active+clean

root@sanverm22-master:~# ceph --version
ceph version 12.2.10 (177915764b752804194937482a39e95e0ca3de94) luminous (stable)

root@sanverm22-master:~# sudo ceph fs ls
name: cephfs, metadata pool: cephfs_metadata, data pools: [cephfs_data ]
root@sanverm22-master:~#

root@sanverm22-master:~# ceph mds stat
cephfs-1/1/1 up {0=sanverm22-worker-1.fyre.ibm.com=up:active}

root@sanverm22-master:~# ceph auth get-key client.admin | base64
QVFET2UwVmNDbGU2RVJBQTZMODJCZW9zTE5KN0ZKd3FxNVcxK0E9PQ==
root@sanverm22-master:~#

The Ubuntu machine where I am trying to mount the volume.

root@sanjay33-ubt-worker-1:~# cat client.admin
QVFET2UwVmNDbGU2RVJBQTZMODJCZW9zTE5KN0ZKd3FxNVcxK0E9PQ==
root@sanjay33-ubt-worker-1:~# mount -t ceph 10.41.11.177:6789/ /mnt/ceph -o name=admin,secretfile=/root/client.admin --verbose
source mount path was not specified
failed to resolve source
root@sanjay33-ubt-worker-1:~#

NOTE: The client machine is not part of Ceph cluster, it is a separate ubuntu box.

Please let me know what is missing. I feel it is a simple case.

Zheng Yan wrote:

need a ":" between monitor port and path. something like

mount -t ceph 10.41.11.177:6789:/ /mnt/ceph -o name=admin,secretfile=/root/client.admin --verbose

I did try that too.

root@sanjay33-ubt-worker-1:~# mount.ceph 10.41.11.177:6789:/ /mnt/ceph -o name=admin,secretfile=/root/client.admin
adding ceph secret key to kernel failed: Invalid argument.
failed to parse ceph_options
root@sanjay33-ubt-worker-1:~#

whereas my client.admin file is:

root@sanjay33-ubt-worker-1:~# cat client.admin
QVFET2UwVmNDbGU2RVJBQTZMODJCZW9zTE5KN0ZKd3FxNVcxK0E9PQ==

On Ceph FS sever:
root@sanverm22-master:~# ceph auth get-key client.admin | base64
QVFET2UwVmNDbGU2RVJBQTZMODJCZW9zTE5KN0ZKd3FxNVcxK0E9PQ==

Nathan Cutler wrote:

Did you try asking on the ceph-users mailing list?

No. I will ask now. But please keep this open until I find the solution. thanks.

don't process 'ceph auth get-key' through base64

ceph auth get-key client.admin > /root/client.admin

Zheng Yan wrote:

don't process 'ceph auth get-key' through base64

ceph auth get-key client.admin > /root/client.admin

Thanks, it worked. I was coming from Kubernetes environment and assumed base64.

root@sanjay33-ubt-worker-1:~# mount.ceph  10.41.11.177:6789:/ /mnt/ceph -o name=admin,secretfile=/root/client.admin
root@sanjay33-ubt-worker-1:~# cd /mnt/ceph/
root@sanjay33-ubt-worker-1:/mnt/ceph# ls
SUCCESS  test