[Pacemaker] Two resource nodes + one quorum node

Andrey Groshev greenx at yandex.ru
Thu Jun 13 18:12:23 UTC 2013



13.06.2013, 18:15, "Lars Marowsky-Bree" <lmb at suse.com>:
> On 2013-06-13T16:24:25, Andrey Groshev <greenx at yandex.ru> wrote:
>
>>>  It doesn't have to be able to run services, it only needs to contribute to quorum.
>>  That is, there is no way to switch the node into standby mode from a pacemaker script/config?
>
> Sure there is:
>
> # crm node standby nodename
>

Again, not that. As most to switch node in the standby mode - I know.
I want to "quorum" node can not be the occasion of the launch.
To understand what it was fake node.
A cluster of two nodes, by definition, can not be trusted because two nodes may not be the right one.
There should always be a third option: a third node, the default gateway or something.

> The node will not run resources, but you need to keep it updated like
> the others as well - so there's management overhead.
>
> Personally, 2 node clusters work quite fine for our customers. I don't
> quite agree with the major shortcomings they're supposed to have, though
> I'm sure the use case could be further improved.
>
> Regards,
>     Lars
>
> --
> Architect Storage/HA
> SUSE LINUX Products GmbH, GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer, HRB 21284 (AG Nürnberg)
> "Experience is the name everyone gives to their mistakes." -- Oscar Wilde
>
> _______________________________________________
> Pacemaker mailing list: Pacemaker at oss.clusterlabs.org
> 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




More information about the Pacemaker mailing list