Re: ceph-create-keys hung

[Joao Eduardo Luis <joao.luis-4GqslpFJ+cxBDgjK7y7TUQ@public.gmane.org>]

On 10/03/2013 02:44 PM, Abhay Sachan wrote:
> Hi All,
> I have tried setting up a ceph cluster with 3 nodes (3 monitors). I am
> using RHEL 6.4 as OS with dumpling(0.67.3) release. Ceph cluster
> creation (using ceph-deploy as well as mkcephfs), ceph-creates-keys
> doesn't return on any of the servers. Whereas, if I create a cluster
> with only 1 node (1 monitor), key creation goes through. Has anybody
> seen this problem or any ideas what I might be missing??
>
> Regards,
> Abhay

Those symptoms tell me that your monitors are not forming quorum. 
'ceph-create-keys' needs the monitors to first establish a quorum, 
otherwise it will hang waiting for that to happen.

Please make sure all your monitors are running.  If so, try running 
'ceph -s' on your cluster.  If that hangs as well, try accessing each 
monitor's admin socket to check what's happening [1].  If that too 
fails, try looking into the logs for something obviously wrong.  If you 
are not able to discern anything useful at that point, upload the logs 
to some place and point us to them -- we'll then be happy to take a look.

Hope this helps.

   -Joao

-- 
Joao Eduardo Luis
Software Engineer | http://inktank.com | http://ceph.com