[ClusterLabs] Limit the number of resources starting/stoping in parallel possible?

[Knauf Steffen]

Hi Antony,

all Services must be stopped if the VIP moves away. There is a really complex structure behind the Services. The Services cannot start without VIP.

greets

Steffen
________________________________
Von: Users <users-bounces at clusterlabs.org> im Auftrag von Ken Gaillot <kgaillot at redhat.com>
Gesendet: Montag, 18. September 2023 16:36
An: Cluster Labs - All topics related to open-source clustering welcomed <users at clusterlabs.org>
Betreff: Re: [ClusterLabs] Limit the number of resources starting/stoping in parallel possible?

On Mon, 2023-09-18 at 14:24 +0000, Knauf Steffen wrote:
> Hi,
>
> we have multiple Cluster (2 node + quorum setup) with more then 100
> Resources ( 10 x VIP + 90 Microservices) per Node.
> If the Resources are stopped/started at the same time the Server is
> under heavy load, which may result into timeouts and an unresponsive
> server.
> We configured some Ordering Constraints (VIP --> Microservice). Is
> there a way to limit the number of resources starting/stoping in
> parallel?
> Perhaps you have some other tips to handle such a situation.
>
> Thanks & greets
>
> Steffen
>

Hi,

Yes, see the batch-limit cluster option:

https://clusterlabs.org/pacemaker/doc/2.1/Pacemaker_Explained/html/options.html#cluster-options

--
Ken Gaillot <kgaillot at redhat.com>

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