Having two monitors should not be causing the problem you are seeing like
you say. What is in /var/log/ceph/ceph.mon.*.log?

Robert LeBlanc

Sent from a mobile device please excuse any typos.
On Mar 12, 2015 7:39 PM, "Georgios Dimitrakakis" <gior...@acmac.uoc.gr>
wrote:

> Hi Robert!
>
> Thanks for the feedback! I am aware of the fact that the number of the
> monitors should be odd
> but this is a very basic setup just to test CEPH functionality and perform
> tasks there before
> doing it to our production cluster.
>
> So I am not concerned about that and I really don't believe that this is
> why the problem has appeared!
>
> What concerns me is how this "new" monitor that has the same name followed
> by an underscore and
> the IP address appeared out of nowhere and how to stop it!
>
> Regards,
>
> George
>
>  Two monitors dont work very well and really dont but you anything. I
>> would either add another monitor or remove one. Paxos is most
>> effective with an odd number of monitors.
>>
>> I dont know about the problem you are experiencing and how to help
>> you. An even number of monitors should work.
>>
>> Robert LeBlanc
>>
>> Sent from a mobile device please excuse any typos.
>> On Mar 12, 2015 7:19 PM, "Georgios Dimitrakakis"  wrote:
>>
>>  I forgot to say that the monitors form a quorum and the clusters
>>> health is OK
>>> so there arent any serious troubles other than the annoying
>>> message.
>>>
>>> Best,
>>>
>>> George
>>>
>>>  Hi all!
>>>>
>>>> I have updated from 0.80.8 to 0.80.9 and every time I try to
>>>> restart
>>>> CEPH a monitor a strange monitor is appearing!
>>>>
>>>> Here is the output:
>>>>
>>>> #/etc/init.d/ceph restart mon
>>>> === mon.master ===
>>>> === mon.master ===
>>>> Stopping Ceph mon.master on master...kill 10766...done
>>>> === mon.master ===
>>>> Starting Ceph mon.master on master...
>>>> Starting ceph-create-keys on master...
>>>> === mon.master_192.168.0.10 ===
>>>> === mon.master_192.168.0.10 ===
>>>> Stopping Ceph mon.master_192.168.0.10 on master...done
>>>> === mon.master_192.168.0.10 ===
>>>> Starting Ceph mon.master_192.168.0.10 on master...
>>>> 2015-03-13 03:06:22.964493 7f06256fa7a0 -1
>>>> mon.master_192.168.0.10@-1(probing) e2 not in monmap and have
>>>> been in
>>>> a quorum before; must have been removed
>>>> 2015-03-13 03:06:22.964497 7f06256fa7a0 -1
>>>> mon.master_192.168.0.10@-1(probing) e2 commit suicide!
>>>> 2015-03-13 03:06:22.964499 7f06256fa7a0 -1 failed to initialize
>>>> failed: ulimit -n 32768;  /usr/bin/ceph-mon -i
>>>> master_192.168.0.10
>>>> --pid-file /var/run/ceph/mon.master_192.168.0.10.pid -c
>>>> /etc/ceph/ceph.conf --cluster ceph
>>>>
>>>> I have two monitors which are:
>>>>
>>>> mon.master and mon.client1
>>>>
>>>> and have defined them in ceph.conf as:
>>>>
>>>> mon_initial_members = master,client1
>>>> mon_host = 192.168.0.10,192.168.0.11
>>>>
>>>> Why is the "mon.master_192.168.0.10" appearing and how can I stop
>>>> it
>>>> from happening?
>>>>
>>>> The above is the problem on one node. Obviously the problem is
>>>> appearing on the other node as well but instead I have
>>>>
>>>> "mon.client1_192.168.0.11" appearing
>>>>
>>>> Any ideas?
>>>>
>>>> Regards,
>>>>
>>>> George
>>>> _______________________________________________
>>>> ceph-users mailing list
>>>> ceph-users@lists.ceph.com [1]
>>>> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com [2]
>>>>
>>> _______________________________________________
>>> ceph-users mailing list
>>> ceph-users@lists.ceph.com [3]
>>> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com [4]
>>>
>>
>>
>> Links:
>> ------
>> [1] mailto:ceph-users@lists.ceph.com
>> [2] http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
>> [3] mailto:ceph-users@lists.ceph.com
>> [4] http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
>> [5] mailto:gior...@acmac.uoc.gr
>>
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