[ClusterLabs] Antw: [EXT] Completely disabled resource failure triggered fencing

Ulrich Windl Ulrich.Windl at rz.uni-regensburg.de
Mon Jan 18 03:03:21 EST 2021

>>> Digimer <lists at alteeve.ca> schrieb am 17.01.2021 um 19:45 in Nachricht
<5c428538-3507-d886-8c54-f63bc4bad727 at alteeve.ca>:
> Hi all,
>   I'm trying to figure out how to define a resource such that if it
> fails in any way, it will not cause pacemaker self self-fence. The
> reasoning being that there are relatively minor ways to fault a single
> resource (these are VMs, so for example, a bad edit to the XML
> definition renders it invalid, or the definition is accidentally removed).
> In a case like this, I fully expect that resource to enter a failed
> state. Of course, pacemaker won't be able to stop it, migrate it, etc.
> When this happens currently, it causes the host to self-fence, taking
> down all other hosted resources (servers). This is less than ideal.
> Is there a way to tell pacemaker that if it's unable to manage a
> resource, it flags it as failed and leaves it at that? I've been trying
> to do this and my config so far is;
> pcs resource create srv07-el6 ocf:alteeve:server name="srv07-el6" \
>  meta allow-migrate="true" target-role="stopped" \
>  op monitor interval="60" start timeout="INFINITY" \
>  on-fail="block" stop timeout="INFINITY" on-fail="block" \
>  migrate_to timeout="INFINITY"
> This is getting cumbersome and still, in testing, I'm finding cases
> where the node gets fenced when something breaks the resource in a
> creative way.

Can you give more details?

> Thanks for any insight/guidance!
> -- 
> Digimer
> Papers and Projects: https://alteeve.com/w/ 
> "I am, somehow, less interested in the weight and convolutions of
> Einstein’s brain than in the near certainty that people of equal talent
> have lived and died in cotton fields and sweatshops." - Stephen Jay Gould
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