[Pacemaker] Ressources not moving to node with better connectivity - pingd

[Michael Schwartzkopff]

Am Montag, 9. Dezember 2013, 13:06:04 schrieb Bauer, Stefan:
> Why are some resources listed more than once in the output?
> What is the difference between group_color and native_color?
> If a resource has a value of -INFINITY is it because the cluster already
> decided that this resource should not run on this host or it can not run on
> this host due to other reasons?
> 
> I'm not quite sure, how a resource stickiness interferes with the internal
> decicions taken to migrate.

Everything is points. stickiness is points. constraints result in points.

With every event the cluster calculates the matrix from all nodes and all 
resources. A resource will run on that node it can collect most points.

Beware of impicit constraints that give points. I.e. a colocation

col col_A_with_B inf: A B

will result in -inf points for the resource B on all nodes where A is not 
running.

Look at the output of crm_simulate -s -L, write down the matrix and understand 
it.

-- 
Mit freundlichen Grüßen,

Michael Schwartzkopff

-- 
[*] sys4 AG

http://sys4.de, +49 (89) 30 90 46 64, +49 (162) 165 0044
Franziskanerstraße 15, 81669 München

Sitz der Gesellschaft: München, Amtsgericht München: HRB 199263
Vorstand: Patrick Ben Koetter, Axel von der Ohe, Marc Schiffbauer
Aufsichtsratsvorsitzender: Florian Kirstein
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 230 bytes
Desc: This is a digitally signed message part.
URL: <https://lists.clusterlabs.org/pipermail/pacemaker/attachments/20131209/9228ddaf/attachment-0004.sig>