On Wednesday 21 December 2022 at 16:59:16, Antony Stone wrote:
> Hi.
>
> I'm implementing fencing on a 7-node cluster as described recently:
> https://lists.clusterlabs.org/pipermail/users/2022-December/030714.html
>
> I'm using external/ssh for the time being, and it works if I test it using:
>
> stonith -t external/ssh -p "nodeA nodeB nodeC" -T reset nodeB
>
>
> However, when it's supposed to be invoked because a node has got stuck, I
> simply find syslog full of the following (one from each of the other six
> nodes in the cluster):
>
> pacemaker-fenced[3262]: notice: Operation reboot of nodeB by for
> pacemaker-controld.26852@nodeA.93b391b2: No such device
>
> I have defined seven stonith resources, one for rebooting each machine, and
> I can see from "crm status" that they have been assigned randomly amongst
> the other servers, usually one per server, so that looks good.
>
>
> The main things that puzzle me about the log message are:
>
> a) why does it say ""? Is this more like "anyone", meaning that
> no- one in particular is required to do this task, provided that at least
> someone does it? Does this indicate a configuration problem?
PS: I've just noticed that I'm also getting log entries immediately
afterwards:
pacemaker-controld[3264]: notice: Peer nodeB was not terminated (reboot) by
on behalf of pacemaker-controld.26852: No such device
> b) what is this "device" referred to? I'm using "external/ssh" so there is
> no actual Stonith device for power-cycling hardware machines - am I
> supposed to define some sort of dummy device somewhere?
>
> For clarity, this is what I have added to my cluster configuration to set
> this up:
>
> primitive reboot_nodeAstonith:external/sshparams hostlist="nodeA"
> location only_nodeA reboot_nodeA-inf: nodeA
>
> ...repeated for all seven nodes.
>
> I also have "stonith-enabled=yes" in the cib-bootstrap-options.
>
>
> Ideas, anyone?
>
> Thanks,
>
>
> Antony.
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