China wrote:
Ok, now it works, but when the PC_A returns up the resource doesn't remains
on PC_B and failback to PC_A.
How can I configure to switch the first time to PC_B on PC_A failover, but
not return back if PC_A returns UP?
Set resource stickiness to a reasonable value.
Here's roughly how stickiness works:
When you startup, the scores are calculated from your constraints and a
decision is made where to run the resource (PC_A in your case).
Afterwards, the stickiness is added to the score for PC_A because the
resource is running there.
Now PC_A fails. The node with the highest score for your resource gets
to run it (PC_B). After a successful start, the stickiness is added to
the score for PC_B.
Now PC_A comes back. It will get its normal score from your constraints,
but no stickiness because the resource is not running there.
So if you make (PC_B score + stickiness) > (PC_A score), the resource
will stay on PC_B.
Regards
Dominik
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