[ClusterLabs Developers] [Linux-ha-dev] Announcing crmsh release 2.1.7

[Darren Thompson]

Thank you.

Comprehensively  answered.

On 1 Sep 2016 6:27 PM, "Kristoffer Grönlund" <kgronlund at suse.com> wrote:

> Darren Thompson <darrent at akurit.com.au> writes:
>
> > Just a quick question:
> >
> > If "scripts: no-quorum-policy=ignore" is becoming depreciated, how are we
> > to manage two node (e.g. test) clusters that require this work around
> since
> > quorum state on a single node is an odd state.
> >
>
> Hi Darren,
>
> There are better mechanisms in corosync and Pacemaker for handling two
> node clusters now while still maintaining quorum.
>
> In corosync 2, we have the two_node: 1 setting for votequorum, which
> ensures that a two node cluster doesn't suffer split brain (fencing is
> required for this to work properly).
>
> There is an explanation for how this works here:
>
> http://people.redhat.com/ccaulfie/docs/Votequorum_Intro.pdf
>
> Somewhat related, there used to be the start-delay meta parameter which
> could be set for example for sbd stonith resources, to make a
> double-fencing scenario less likely. This has now been replaced by the
> pcmk_delay_max parameter. For an example of how to use this, see this
> pull request for sbd:
>
> https://github.com/ClusterLabs/sbd/pull/15/commits/
> ca2fba836eab169f0c8cacf7f3757c0485bcfef8
>
> Cheers,
> Kristoffer
>
> --
> // Kristoffer Grönlund
> // kgronlund at suse.com
>
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