This box is one which has a cluster as a hot standby via streaming replication, so I need to keep it alive because it is used as a read-only cluster. The intent is to replicate it to 9.2 via Slony and then make it the master while we upgrade the other server, which will then become the slave. I need to run the process in a lab environment first, of course, but the problem right now is how to get the 2 clusters running on the same server, preferably using the ports system. -----Original Message----- From: ktm@xxxxxxxx [mailto:ktm@xxxxxxxx] Sent: Wednesday, May 01, 2013 2:09 PM To: Benjamin Krajmalnik Cc: pgsql-admin@xxxxxxxxxxxxxx Subject: Re: Installing multiple instances of Postgred on one FreeBSD server On Wed, May 01, 2013 at 01:58:21PM -0600, Benjamin Krajmalnik wrote: > I need to migrate a production database from Postgres 9.0 to Postgres > 9.2. > > Running FreeBSD 8.1/amd64, and presently running Postgres 9.0.4. > > Due to the nature of the application, I cannot have any considerable > downtime, so the pg_dump and install new version route is not an option. > > I would like to install PG 9.2 on the same server and use Slony to > replicate the databases, and once everything is up take the 9.0 > cluster down. > > Ideally, I would like to do this from the ports. > > Any suggestions will be deeply appreciated. > Hi Benjamin, Using Slony will definitely work. We have used it many times for this type of upgrade. Since you are on the same box, have you considered using pg_upgrade? Regards, Ken -- Sent via pgsql-admin mailing list (pgsql-admin@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin
