Re: 100% failover + replication solution

From: "Moiz Kothari" <moizpostgres(at)gmail(dot)com>
To: "Shoaib Mir" <shoaibmir(at)gmail(dot)com>
Cc: "Ben Suffolk" <ben(at)vanilla(dot)net>, pgsql-admin(at)postgresql(dot)org
Subject: Re: 100% failover + replication solution
Date: 2006-10-30 10:53:35
Message-ID: 82e1a9bd0610300253y1c999f31k5ba6ac086bcfb802@mail.gmail.com
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Shoaib,

It sure does, i saw PGCLUSTER, but 3 reasons for having a postgres specific
solution.

1) If pgcluster stops further development, it would be lot more hassel when
upgrading to a different version of postgres.
2) Postgres specific solution would help alot going ahead in future.
3) Also architecture of pgcluster might make things slower as it updates
complete cluster before confirming the request.

There are lots of them available in market, but i think WAL solution should
be available, if not then the thought process should be there going ahead. I
am expecting a solution out of WAL logs. Let me know if you have any
thoughts about it.

Regards,
Moiz Kothari

On 10/30/06, Shoaib Mir <shoaibmir(at)gmail(dot)com> wrote:
>
> There is this project which actually is not released yet, but something
> that you want to achieve :)
>
> http://pgfoundry.org/projects/pgpitrha
>
> Regards,
> -------
> Shoaib Mir
> EnterpriseDB (www.enterprisedb.com)
>
> On 10/30/06, Ben Suffolk < ben(at)vanilla(dot)net> wrote:
>
> > > Guys,
> > >
> > > I have been thinking about this and wanted to see if it can be
> > > achived. I wanted to make a 100% failover solution for my postgres
> > > databases. The first thing that comes to my mind is doing it using
> > > WAL logs. Am attaching the diagram for which i will write more here.
> >
> > While its not the solution you were looking at, have you seen
> > PGCluser :-
> >
> > http://pgcluster.projects.postgresql.org/index.html
> >
> > I have not tried it, but was looking the other week at various fail-
> > over type solutions and came across it. It seems to be able to do
> > what you want.
> >
> > Ben
> >
> >
> >
> >
> >
> >
> > ---------------------------(end of broadcast)---------------------------
> > TIP 9: In versions below 8.0, the planner will ignore your desire to
> > choose an index scan if your joining column's datatypes do not
> > match
> >
>
>

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