[Pacemaker] trouble with quorum

Andrew Beekhof andrew at beekhof.net
Fri May 24 07:29:40 UTC 2013


On 24/05/2013, at 4:35 PM, Andrey Groshev <greenx at yandex.ru> wrote:

> 
> 
> 24.05.2013, 01:39, "Andrew Beekhof" <andrew at beekhof.net>:
>> On 24/05/2013, at 3:49 AM, Andrey Groshev <greenx at yandex.ru> wrote:
>> 
>>>  23.05.2013, 02:51, "Andrew Beekhof" <andrew at beekhof.net>:
>>>>  On 22/05/2013, at 10:25 PM, Groshev Andrey <greenx at yandex.ru> wrote:
>>>>>   Hello,
>>>>> 
>>>>>   I try build cluster with 2 nodes + one quorum node (without pacemaker).
>>>>  This is the root of your problem.
>>>> 
>>>>  Your config has:
>>>>>   service {
>>>>>           name: pacemaker
>>>>>           ver: 1
>>>>>   }
>>>  Well, I tested and "service version 0" and CMAN
>> 
>> Do not do this.  If you want to use CMAN, remove the service {} block completely.
> 
> Of course , I tested their separately.
> But not fully tested "service version 0".
> I repeated the test today - his behavior too as same "version 1".

I'm sorry, I can't parse this at all.
Please delete corosync.conf and follow http://clusterlabs.org/quickstart-redhat.html

> Maybe the problem described in the official documentation?
> 
>>>  - it work.
>>>  But I did not find in the documentation description of this option,
>>>  although it was nearly six months each weekday reread "cluster from scratch" and other documens. :)
>>>  Where can I find this documentation?
>>> 
>>>  I was still the next question - about hangs elections.
>>>  But I read your blog entirely ...
>>>  That is, If plugins are buggy and no one to repair them will not, then have three choices:
>>>  1. use service version of "0"
>> 
>> This is still the plugin
>> 
>>>  2. use CMAN
>>>  3. Use corosync 2.x.
>>>  I understood you correctly?
>>>>  So even though you thought you only started corosync, you also started part of pacemaker.
>>>>  Specifically the part of pacemaker that gets loaded into corosync to provides membership and _quorum_ APIs to the other daemons.
>>>> 
>>>>  The output from corosync-quorumtool is completely irrelevant to pacemaker in this kind of setup.
>>>> 
>>>>  Since you're on a RHEL derivative, I highly suggest using Pacemaker with CMAN (and updating to 6.4 while you're there :-).
>>>>  In this case, the pacemaker daemons DO see the same quorum as corosync-quorumtool and your expectations would be correct.
>>>>  snip .....
>>>  Unfortunately (or fortunately) I try not to focus on one specific distribution.
>>>  I have to work with CentOS, and with many other Linux distributions.
>>>  I am interested in your opinion, what will happen to the clusters in openSUSE?
>>> 
>>>  Regards Andrey Groshev.
>>> 
>>>  _______________________________________________
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>>>  http://oss.clusterlabs.org/mailman/listinfo/pacemaker
>>> 
>>>  Project Home: http://www.clusterlabs.org
>>>  Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
>>>  Bugs: http://bugs.clusterlabs.org
>> 
>> _______________________________________________
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>> 
>> Project Home: http://www.clusterlabs.org
>> Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
>> Bugs: http://bugs.clusterlabs.org
> 
> _______________________________________________
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> http://oss.clusterlabs.org/mailman/listinfo/pacemaker
> 
> Project Home: http://www.clusterlabs.org
> Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
> Bugs: http://bugs.clusterlabs.org





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