[ClusterLabs] Antw: Re: design of a two-node cluster

Digimer lists at alteeve.ca
Tue Dec 8 09:37:03 EST 2015

On 08/12/15 02:44 AM, Ulrich Windl wrote:
>>>> Digimer <lists at alteeve.ca> schrieb am 07.12.2015 um 22:40 in Nachricht
> <5665FCDC.1030001 at alteeve.ca>:
> [...]
>> Node 1 looks up how to fence node 2, sees no delay and fences
>> immediately. Node 2 looks up how to fence node 1, sees a delay and
>> pauses. Node 2 will be dead long before the delay expires, ensuring that
>> node 2 always loses in such a case. If you have VMs on both nodes, then
>> no matter which node the delay is on, some servers will be interrupted.
> AFAIK, the cluster will try to migrate resources if a fencing is pending, but not yet complete. Is that true?
> [...]
> Regards,
> Ulrich

A cluster can't (and shouldn't!) do anything about resources until
fencing has completed.

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