[Koha-devel] [Koha] Redundant infrastructure for Koha

[Rodrigo Santellan]

Chris,

What about the uploaded files? You will need to replicate them to the other
server.

What about the cross connection of the DB, you will use mysql proxy in the
middle?

I'm really curious about those answers.

Regards.

On Mon, Nov 7, 2016 at 5:05 PM, Chris Cormack <chris at bigballofwax.co.nz>
wrote:

> On 8 November 2016 at 08:50, Michael Kuhn <mik at adminkuhn.ch> wrote:
> > Hi,
> >
> > We are looking for a solution to build a redundant infrastructure for
> Koha.
> >
> > What we want to do is shown in the diagram
> > http://adminkuhn.ch/download/Redundant.png
> >
> > The main objective of such a solution is: If one of the Application
> Servers
> > goes down the other will take over the job without losing any time. If
> the
> > DB-Server Master goes down we will be able to build the Master out of the
> > Slave and create a new Slave next to the new Master.
> >
> > Has anyone ever built such an infrastructure with Koha and can give us
> some
> > advice how to proceed? Is this possible with Koha anyway?
>
>
> Will shift this to Koha-devel
>
> Yes this is possible and quite easy to do. What makes it tricky is
> Zebra, which you have left out
> of your diagram.
> You either need to have the full zebra index on both your application
> servers (which means modifying rebuild_zebraqueue to make
> sure it gets built by each machine)
> Or you need to use something like nfs or another distributed
> filesystem. Or use rsync etc.
>
> It becomes a lot easier with elasticsearch of course, because you just
> have your elastic cluster
> and they talk to that.
>
> Hope this helps
>
> Chris
>
> >
> > Best wishes: Michael
> > --
> > Geschäftsführer · Diplombibliothekar BBS, Informatiker eidg. Fachausweis
> > Admin Kuhn GmbH · Pappelstrasse 20 · 4123 Allschwil · Schweiz
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