[Pacemaker] "Follow and then push off"

Lars Marowsky-Bree lmb at suse.de
Wed Oct 28 19:38:16 UTC 2009


On 2009-10-28T12:42:38, Andrew Beekhof <andrew at beekhof.net> wrote:

> > I sort of like the approach, and wonder if we can do something similar?
> Its interesting, but sounds like a nightmare to configure.

Configuring this is not that difficult, I think, once one grokked the
rule - in theory, the two collocation constraints would work for us too,
if we had "weak" collocation constraints ...

(Which has some merits - "try to (not) collocate, if possible.")

> And how does it scale?  (ie. clone-max > 2 and/or master-max > 1)

It probably doesn't scale that well, but not everything needs that. In
turn, the "follow and push off" works for resource groups and for
resources that aren't m/s-aware.


Regards,
    Lars

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Architect Storage/HA, OPS Engineering, Novell, Inc.
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"Experience is the name everyone gives to their mistakes." -- Oscar Wilde





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