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Re: MirrorMode/N-Way Multi-Master Replication Clarification

----- "Howard Chu" <hyc@symas.com> wrote:

> Alan Evans wrote:
> > There is another thread "MirrorMode and chaining - are slaves
> needed?"
> > which has caused me some confusion about MirrorMode and N-Way
> > Multi-Master Replication.
> >
> > Is the difference between MirrorMode and N-Way Multi-Master the
> number
> > of nodes?  2 nodes = Mirror Mode, 3+ nodes = Multi-Master?  But both
> use
> > the exact same configuration?
> >
> > If this is the case the documentation does not make this clear at
> all
> > and using the MirrorMode directive in N-Way Multi-Master is very
> > confusing.  Why not "MirrorMode On" OR "MultiMaster On" ??
> >
> > Is there a way to use two nodes in N-Way Multi-Master replication?
> The key element of MirrorMode is that there is an external frontend
> that 
> ensures that all writes are directed to a single server. Otherwise,
> there is 
> no difference.

Should I change the docs for MM? We do writes to a single server to guarantee 
writes correct? If they are both the same, should we rename MirrorMode to a different
key word?

We don't use the server URI in the MM example, maybe that section should be totally re-written
as it seems to be confusing users.


Kind Regards,

Gavin Henry.
Managing Director.

T +44 (0) 1224 279484
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E ghenry@suretecsystems.com

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