[ClusterLabs] Antw: Re: Antw: Re: questions about startup fencing

[Ulrich Windl]

>>> Kristoffer Grönlund <kgronlund at suse.com> schrieb am 04.12.2017 um 16:02
in
Nachricht <87fu8qedu0.fsf at suse.com>:
> Tomas Jelinek <tojeline at redhat.com> writes:
> 
>>> 
>>> * how is it shutting down the cluster when issuing "pcs cluster stop
--all"?
>>
>> First, it sends a request to each node to stop pacemaker. The requests 
>> are sent in parallel which prevents resources from being moved from node 
>> to node. Once pacemaker stops on all nodes, corosync is stopped on all 
>> nodes in the same manner.
>>
>>> * any race condition possible where the cib will record only one node up 
> before
>>>    the last one shut down?
>>> * will the cluster start safely?
> 
> That definitely sounds racy to me. The best idea I can think of would be
> to set all nodes except one in standby, and then shutdown pacemaker
> everywhere...

Why not all nodes?

> 
> -- 
> // Kristoffer Grönlund
> // kgronlund at suse.com 
> 
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