[ClusterLabs] why is node fenced ?

[Lentes, Bernd]

----- On Aug 18, 2020, at 7:30 PM, kgaillot kgaillot at redhat.com wrote:


>> > I'm not sure, I'd have to see the pe input.
>> 
>> You find it here:
>> https://hmgubox2.helmholtz-muenchen.de/index.php/s/WJGtodMZ9k7rN29
> 
> This appears to be a scheduler bug.
> 
> The scheduler considers a migration to be "dangling" if it has a record
> of a failed migrate_to on the source node, but no migrate_from on the
> target node (and no migrate_from or start on the source node, which
> would indicate a later full restart or reverse migration).
> 
> In this case, any migrate_from on the target has since been superseded
> by a failed start and a successful stop, so there is no longer a record
> of it. Therefore the migration is considered dangling, which requires a
> full stop on the source node.
> 
> However in this case we already have a successful stop on the source
> node after the failed migrate_to, and I believe that should be
> sufficient to consider it no longer dangling.
> 

Thanks for your explananation Ken.
For me a Fence i don't understand is the worst that can happen to a HA cluster.

Bernd
Helmholtz Zentrum München

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