[Pacemaker] Best way to split a resource across two locations, four nodes

Andy Smith andy at strugglers.net
Wed Jan 19 16:13:05 UTC 2011


Hi Andrew,

On Wed, Jan 19, 2011 at 10:12:30AM +0100, Andrew Beekhof wrote:
> On Tue, Jan 18, 2011 at 7:15 AM, Andy Smith <andy at strugglers.net> wrote:
> > Should an entire suite go dark (e.g. power fail of whole room),
> 
> How do you know "they" had a power failure and "we" didn't loose our
> own connectivity?
> 
> As with all split site clusters they key is knowing when to take over.

Thanks for that, I hadn't really considered that aspect of it.

In this case since DNS is stateless I think it won't actually matter
if both sides think they are taking over. I'll have to think about
this some more.

Thanks again,
Andy



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