[ClusterLabs] Correctly stop pacemaker on 2-node cluster with SBD and failed devices?

[Andrei Borzenkov]

On Tue, Jun 15, 2021 at 6:43 PM Strahil Nikolov <hunter86_bg at yahoo.com> wrote:
>
> How did you stop pacemaker ?

systemctl stop pacemaker

surprise :)

> Usually I use 'pcs cluster stop' or it's crm alternative.
>
> Best Regards,
> Strahil Nikolov
>
> On Tue, Jun 15, 2021 at 18:21, Andrei Borzenkov
> <arvidjaar at gmail.com> wrote:
> We had the following situation
>
> 2-node cluster with single device (just single external storage
> available). Storage failed. So SBD lost access to the device. Cluster
> was still up, both nodes were running.
>
> We thought that access to storage was restored, but one step was
> missing so devices appeared empty.
>
> At this point I tried to restart the pacemaker. But as soon as I
> stopped pacemaker SBD rebooted nodes - which is logical, as quorum was
> now lost.
>
> How to cleanly stop pacemaker in this case and keep nodes up?
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