Re: Migrate postgres to newer hardware

Dear all,

I would love to have things covered, but I have inherited this setup.
I am sure we will improve it, but I have to make the most with what I have got, I am afraid.
I am grateful for all the help so far, I really appreciate it.

Ps I think there should be an easier way, maybe doing as follows:
1 – Dump the database online with pg_dump, while production server is still running
2 – Restore it to the new server, while old server is still online
3 – On the old server, run a query looking for all the new transactions since the last full backup.
4 – Run a pg_dump to dump only the new transactions since last backup and restore to the new server or ‘append’ to the new server.

I think this should be possible to do.

Thank you very much for all your support and help, really appreciated.

Renato

Renato Oliveira
Systems Administrator
e-mail: renato(dot)oliveira(at)grant(dot)co(dot)uk

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From: pgsql-admin-owner(at)postgresql(dot)org [mailto:pgsql-admin-owner(at)postgresql(dot)org] On Behalf Of Iñigo Martinez Lasala
Sent: 02 April 2010 08:41
To: Brad Nicholson
Cc: pgsql-admin
Subject: Re: [ADMIN] Migrate postgres to newer hardware

I would never sing a SLA for HA if I don't have system, at least, fully redundant in order to deal with these issues.
Single server, single point of failure.

-----Original Message-----
From: Brad Nicholson <bnichols(at)ca(dot)afilias(dot)info<mailto:Brad%20Nicholson%20%3cbnichols(at)ca(dot)afilias(dot)info%3e>>
To: Iñigo Martinez Lasala <imartinez(at)vectorsf(dot)com<mailto:%3d%3fISO-8859-1%3fQ%3fI%3dF1igo%3f%3d%20Martinez%20Lasala%20%3cimartinez(at)vectorsf(dot)com%3e>>
Cc: Renato Oliveira <renato(dot)oliveira(at)grant(dot)co(dot)uk<mailto:Renato%20Oliveira%20%3crenato(dot)oliveira(at)grant(dot)co(dot)uk%3e>>, pgsql-admin <pgsql-admin(at)postgresql(dot)org<mailto:pgsql-admin%20%3cpgsql-admin(at)postgresql(dot)org%3e>>
Subject: Re: [ADMIN] Migrate postgres to newer hardware
Date: Tue, 30 Mar 2010 10:38:02 -0400

On Tue, 2010-03-30 at 16:29 +0200, Iñigo Martinez Lasala wrote:

> Hi Renato.

>

> I would follow the ancient method: perform a pg_dump / pg_restore

This is the easiest approach. The problem is that a lot of people have

contractual SLA's that do not allow them to take their systems down long

enough to do a dump and restore upgrade.

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