Benjamin Lawetz wrote:
> Hi,
>
> I've been running some tests on my heartbeat setup with STONITH.
> When I go live, there will a serial connection, a crossover ethernet and the
> main ethernet for heartbeat. For the purpose of my tests, I've changed the
> config just to broadcast the heartbeat on the crossover cable.
> Let's say I have node1 running resource1 and node2 running resource2
> with node2 being the DC. When I shutdown the interface:
>
> - Node1 notices the break, complains and doesn't do much else
> - Node2 notices the break, complains and STONITHs Node1
>
> I'm thinking in reality it this would be ok if Node1 freezes and stops
> responding. But what if it's Node2 that stops responding? Node1 will not
> pickup resources and the service will stop.
>
> I know a quorum server would allow a 3rd opinion in the decision, but I feel
> this is added complexity (in 2-3 years the only failures I've had on these
> services was because of the redundancy protection. The services have been
> going strong).
>
> Is it possible to have both machines in that case try to reboot ?
> If it fails,I'm guessing it won't be because of a link failure (3 links) and
> if it is a link failure the machine won't be able to communicate with the
> STONITH. If the machine freezes or others, I'm guessing the other node will
> be quicker to reboot it.
>
> What are your thoughts ?
STONITH is handled somewhat differently between R1 and R2-style
clusters. Which are you running?
--
Alan Robertson <[EMAIL PROTECTED]>
"Openness is the foundation and preservative of friendship... Let me
claim from you at all times your undisguised opinions." - William
Wilberforce
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