[Pacemaker] corosync-quorumtool configuration

[Serge Dubrouski]

On Fri, May 27, 2011 at 1:46 PM, Serge Dubrouski <sergeyfd at gmail.com> wrote:

>
>
> On Fri, May 27, 2011 at 1:39 PM, "Roman Schartlmüller" <
> roman_schartlmueller at gmx.at> wrote:
>
>>
>> -------- Original-Nachricht --------
>> > Datum: Fri, 27 May 2011 20:30:47 +0200
>> > Von: Jelle de Jong <jelledejong at powercraft.nl>
>> > An: pacemaker at oss.clusterlabs.org
>> > Betreff: Re: [Pacemaker] corosync-quorumtool configuration
>>
>> > On 27-05-11 18:19, Roman Schartlmüller wrote:
>> > > Can anybody please help me with configuration? Maybe there is
>> something
>> > > wrong.
>> >
>> > Maybe lose the "no-quorum-policy=ignore" options. And a html mail with
>> > tables really :D
>> >
>> > Kind regards,
>> >
>> > Jelle de Jong
>> >
>> Sorry, I did not know that html emails are unwanted. no-quorum-policy =
>> "ignore" means that the node should not worry about the loss of quorum. But
>> the quorum is lost anyway.
>>
>> I would like to know how to increase the votes of a node. Somehow, the
>> value remains to 1.
>>
>
> I don't think that that feature of Cororsync is supported by Pacemaker. I
> can be wrong here. So far the rule of thumb was: 2 nodes cluster never has a
> quorum, add one more node.
>

And if you think more it shouldn't work in 2 nodes cluster. Let's say you
set up one node with 1 vote another node with 2 votes and expected votes set
to 2 as well. Now pretend that your node with 2 votes dies. You loose your
cluster in this way. Using nodes with number of votes higher than 1 makes
sense for clusters with even numbers of nodes that can be split equally.
Then partition that includes the node with higher number of votes wins.


>
>
>>
>> May 27 21:13:16 corosync [pcmk  ] info: config_find_init: Local handle:
>> 4835695805891346437 for quorum
>> May 27 21:13:16 corosync [pcmk  ] info: config_find_next: Processing
>> additional quorum options...
>> May 27 21:13:16 corosync [pcmk  ] info: get_config_opt: Found
>> 'corosync_votequorum' for option: provider
>> May 27 21:13:16 corosync [pcmk  ] info: update_member: Node Node1 now has
>> 1 quorum votes (was 0)
>> May 27 21:13:16 corosync [QUORUM] Using quorum provider
>> corosync_votequorum
>> May 27 21:13:16 corosync [SERV  ] Service engine loaded: corosync votes
>> quorum service v0.91
>> May 27 21:13:16 corosync [SERV  ] Service engine loaded: corosync cluster
>> quorum service v0.1
>> May 27 21:13:18 corosync [VOTEQ ] quorum regained, resuming activity
>> May 27 21:13:18 corosync [pcmk  ] info: update_member: Node Node2 now has
>> 1 quorum votes (was 0)
>> --
>> Mit freundlichen Grüßen
>>
>> Roman Schartlmüller
>>
>> NEU: FreePhone - kostenlos mobil telefonieren!
>> Jetzt informieren: http://www.gmx.net/de/go/freephone
>>
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>>
>
>
>
> --
> Serge Dubrouski.
>



-- 
Serge Dubrouski.
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