[Pacemaker] Temporarily disabling the cluster

[Xinwei Hu]

OK. I did it with
http://developerbugs.linux-foundation.org/show_bug.cgi?id=1963. ;)

2008/9/9 Lars Marowsky-Bree <lmb at suse.de>:
> On 2008-09-09T23:09:30, Xinwei Hu <hxinwei at gmail.com> wrote:
>
>> But. If there are 2 completely irrelevant resources, Ra & Rb. It'll be
>> very reasonable that the customer want to upgrade Rb while letting
>> pacemaker still monitoring Ra. What's best practice to do so then ?
>
> The problem is that all resources which are linked to the one resource
> in maintenance mode (assuming that this was possible) are implicitly
> also frozen.
>
> This extends to all rsc_colocation and order constraints, but also
> possibly a stop failure (which would cause the node to be fenced).
>
> So yes, a per-resource approach would be better and more fine-grained,
> but a global mode is also needed - that would also be needed for the
> rolling upgrades of the cluster stack.
>
> So, the global option is a first step, solving 80% of the problem. We
> can consider the last 20% later, which are also quite a bit harder ;-)
>
>
> Regards,
>    Lars
>
> --
> Teamlead Kernel, SuSE Labs, Research and Development
> SUSE LINUX Products GmbH, GF: Markus Rex, HRB 16746 (AG Nürnberg)
> "Experience is the name everyone gives to their mistakes." -- Oscar Wilde
>
>
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