[ClusterLabs] Antw: Re: Antw: Re: Antw: [EXT] Coming in Pacemaker 2.0.4: shutdown locks

Ulrich Windl Ulrich.Windl at rz.uni-regensburg.de
Fri Feb 28 03:50:34 EST 2020

>>> Andrei Borzenkov <arvidjaar at gmail.com> schrieb am 28.02.2020 um 06:00 in
Nachricht <60dcda9f-3f75-9fc4-8732-adc14ad3b117 at gmail.com>:
> Well, this requires pacemaker supporting notion of "cluster wide
> shutdown" in the first place.

Yes, a "cluster shutdown" is very much desired, just as the "cluster startup" (start all nodes at the same time conceptually). The latter is more than just a ssh running the software on each node: The DC should be elected once a quorum is up, then it should be waited for more nodes to join ("cluster formation timeout"), and when either the timeout expired or all nodes are up, resources should be placed (started).

Cluster shutdown should be orchestarted in a similar way: All resources stopped, then nodes stop without unnecessary re-elections of the DC.

THAT would be a useful extension.



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