[ClusterLabs] Strange behavior of Resource stickiness

[Klaus Wenninger]

On Tue, May 28, 2024 at 10:40 AM Александр Руденко <a.rudikk at gmail.com>
wrote:

> Hi!
>
> I can't understand this strange behavior, help me please.
>
> I have 3 nodes in my cluster, 4 vCPU/8GB RAM each. And about 70 groups, 2
> resources in each group. First one resource is our custom resource which
> configures Linux VRF and second one is systemd unit. Everything works fine.
>
> We have next defaults:
> pcs resource defaults
> Meta Attrs: rsc_defaults-meta_attributes
>   resource-stickiness=100
>
> When I shutdown pacemaker service on NODE1, all the resources move to
> NODE2 and NODE3, it's okay. But when I start pacemaker service on NODE1, 3
> of 70 groups move back to NODE1.
> But I expect that no one resource will be moved back to NODE1.
>
> I tried to set resource-stickiness=100 exactly for these 3 groups, but it
> didn't help.
>
> pcs resource config fsmt-41CC55C0
>  Group: fsmt-41CC55C0
>   Meta Attrs: resource-stickiness=100
> ...
>
> Why are these 3 resource groups moving back?
>

Did you check if the 3 groups were really started successfully on NODE2,
NODE3 - no failing monitors or something?
Did you check for left over infinity location constraints?

Klaus

>
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