[Pacemaker] trouble with quorum
Andrey Groshev
greenx at yandex.ru
Fri May 24 06:35:27 UTC 2013
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".
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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>
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