[Pacemaker] Load Balancing, Node Scores and Stickiness

[Andrew Beekhof]

On Thu, Oct 22, 2009 at 1:58 PM, Johan Verrept <Johan.Verrept at able.be> wrote:
> On Thu, 2009-10-22 at 12:37 +0200, Andrew Beekhof wrote:
>> > That's easy enough to understand ... and I can't do any fine-tuning,
>> > i.e. suppose that 4 nodes of my 10 node cluster fail, and then come up
>> > again. If all resources have equal score on all nodes (without
>> > counting stickiness), then (a) if stickiness is greater than 0 all
>> > resources will stay put, and (b) if stickiness is 0 then the cluster
>> > will move around resources to distribute them evenly?
>>
>> yep
>
> I wondered, does it happen dynamically? If one resource starts using a
> lot of resources, are the other migrated to other nodes?

Not yet.
Such a feature is planned though.

At the moment pacemaker purely goes on the number of services it has
allocated to the node.
Total/Available RAM, CPU, HDD, none of these things are yet taken into account.