Antw: Re: librados: client.admin authentication error

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>>> "leoncai@xxxxxxxxxxxxxx" <leoncai@xxxxxxxxxxxxxx> schrieb am
Freitag, 15. April
2016 um 11:33:
> Hello Daniel, 
>  
> I'm a newbie to Ceph, and when i config the storage cluster on CentOS
7 VMs, 
> i encontered the same problem as you posted on 
>
[http://lists.ceph.com/pipermail/ceph-users-ceph.com/2014-August/041992.html].

> I've done lots of searching and trying, but still cannot make it
work.
> 
> Could you please tell me how you solved  the problem?
> Thanks in advance.
> 
> 
> # additional terminal info:
> [root@ceph3 ceph]# ceph --debug -v 
> ceph version 9.2.1 (752b6a3020c3de74e07d2a8b4c5e48dab5a6b6fd)
> [root@ceph3 ceph]# ceph --debug --verbose
> parsed_args: Namespace(admin_socket=None, admin_socket_nope=None, 
> cephconf=None, client_id=None, client_name=None, cluster=None, 
> cluster_timeout=None, completion=False, help=False, input_file=None,

> output_file=None, output_format=None, status=False, verbose=True, 
> version=False, watch=False, watch_debug=False, watch_error=False, 
> watch_info=False, watch_sec=False, watch_warn=False), childargs:
['--debug']
> 2016-04-15 17:24:37.909282 7f7169d4f700  0 librados: client.admin 
> authentication error (95) Operation not supported
> Error connecting to cluster: Error
> 
> 

Looks like you're doing this from outside of the cluster.

Look if you have a copy of the ceph.conf in /etc/ceph and what the
client is missing
is the ceph.client.admin.keyring file for connecting to the cluster as
a cluster admin.
That's the default if no --id parameter is given.

But if this is not your deploy or cluster admin host you should avoid
to use the admin
authentication (as well as working with root privileges per default on
linux).

Instead create a seperate ceph user with the subset of the capabilities
you need
(see
http://docs.ceph.com/docs/hammer/rados/operations/user-management/)
and deploy the referencing keyring to the client hosts.

To connect as a different user insert an entry like

[client.health]
  keyring = /etc/ceph/ceph.client.health.keyring

to the ceph.conf and execute 'ceph --id=health ...'.

Regards

Steffen

> 
> Leon(蔡天雄)
> leoncai@xxxxxxxxxxxxxx

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