[ClusterLabs] [EXT] manner in which cluster migrates VirtualDomain - ?

[Windl, Ulrich]

AFAIR pacemaker tries to migrate all at once (which is not the best idea performance-wise), but you can limit the number of concurrent migrations…

migration-limit

-1 (unlimited)

The number of migration jobs that the cluster is allowed to execute in parallel on a node.



From: Users <users-bounces at clusterlabs.org> On Behalf Of lejeczek via Users
Sent: Tuesday, April 18, 2023 2:58 PM
To: users at clusterlabs.org
Cc: lejeczek <peljasz at yahoo.co.uk>
Subject: [EXT] [ClusterLabs] manner in which cluster migrates VirtualDomain - ?

Hi guys.

When it's done by the cluster itself, eg. a node goes 'standby' - how do clusters migrate VirtualDomain resources?
Do users have any control over it and if so then how?
I'd imagine there must be some docs - I failed to find
Especially in large deployments one obvious question would be - I'm guessing as my setup is rather SOHO - can VMs migrate in sequence or it is(always?) a kind of 'swarm' migration?

many thanks, L.
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