On 02/07/2013 03:05 AM, femi anjorin wrote:
Hi ... I am now testing cephfs on an ubuntu client before going back to centos.
A quick question about this command:
mount -t ceph 192.168.0.1:6789:/ /mnt/mycephfs -o
name=admin,secretfile=/etc/ceph/admin.secret ?
mount -t ceph 192.168.0.1:6789:/ /mnt/mycephfs -o
name=ceph,secretfile=/etc/ceph/ceph.keyring ?
Does it need admin.secret or can i use ceph.keyring to mount with
cephfs file system?
It needs the unadorned base64 key; it doesn't parse keyring files.
You can either supply the key on the commandline or in the file
(which is a good idea to keep the key string out of your command line
and command history).
Just a note: At the initial setup of the cluster i used:
mkcephfs -c /etc/ceph/ceph.conf --mkfs -a -k /etc/ceph/ceph.keyring.
So i only have ceph.keyring NOT admin.secret ....
Right. admin.secret is a file containing only the key string. You
can create that file with your own editing, or you can use
ceph-authtool --name client.admin <keyringfile> --print-key
if i do:
#mount -t ceph 172.16.0.25:6789:/ /mnt/mycephfs
mount error 22 = Invalid argument
#dmesg
[ 7182.027665] libceph: client0 fsid 31c4d83e-cb0a-4fed-ab6f-581e8d5356f5
[ 7182.027715] libceph: no secret set (for auth_x protocol)
[ 7182.027719] libceph: error -22 on auth protocol 2 init
#mount -t ceph 172.16.0.25:6789:/ /mnt/mycephfs -o
name=ceph,secretfile=/etc/ceph/ceph.keyring
secret is not valid base64: Invalid argument.
adding ceph secret key to kernel failed: Invalid argument.
failed to parse ceph_options
#dmesg
[ 7639.377337] libceph: client0 fsid 31c4d83e-cb0a-4fed-ab6f-581e8d5356f5
[ 7639.378047] libceph: auth method 'x' error -1
Regards,
Femi
On Wed, Feb 6, 2013 at 4:29 PM, Dimitri Maziuk <dmaziuk@xxxxxxxxxxxxx> wrote:
On 2/6/2013 5:54 AM, Dennis Jacobfeuerborn wrote:
...
To mount cephfs like that you need to have kernel support. As the Linux
kernel on CentOS 6.3 is version 2.6.32 and Ceph support wasn't added
until
2.6.34, you need to compile your own kernel.
The better alternative is probably to install a kernel from
http://elrepo.org/tiki/kernel-lt . "lt" stand for "long term" and should
be
fairly stable and "ml" is "mainline" which is even more current but
because
of that not quite as stable (currently 3.7.6).
I had problems booting ml on some/most (dep. on the version) our machines,
plus it's a pain to track: there's a new one every day.
I do have lt running without problems and mounting cephfs, however, I
haven't gotten around to the actual ceph testing on it yet so I can't say
anything about ceph client's performance/stability on it. ("lt" is 3.0, as
I
understand it doesn't have the latest and greatest ceph module(?))
Dimitri
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