It make more sense to have pacemaker or heartbeat vIP on sql-node's up
tier. Not really sure if you'll get any good results in positioning
pacemaker between nodes communication besides what I mentioned as the
mgm-node many of times will arbitrate the entire cluster.
*Wagner Bianchi, +55.31.8654.9510*
2013/10/8 Andrew Morgan <andrew.morgan@stripped>
> > On 8 Oct 2013, at 09:14, Peter Romfeld <peter.romfeld.hk@stripped>
> > I have just 4 APP server in one region, so my idea for now to install a
> > mgmt-node with pacemaker for HA + 2-3 Data-Nodes + each APP-server will
> > also act as mysqld-node
> I wouldn't normally include Pacemaker as it shouldn't be needed and could
> even be harmful (if it makes decisions about what lives and dies which
> conflict with the decisions that Cluster makes for itself).
> > Since the mysqld is using the data-nodes there should not be much more
> > on the APP-server?
> > Cheers,
> > Peter
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