Thread: 9.0, 9.1 RPM based parallel execution?

so I have a centos6 machine running the 9.0.latest from the
yum.postgresql.org repo...

I'd like to bring up 9.1 on it in parallel, on a different port and
directory.    but I still want 9.0 to be the default install...   I was
looking at the PG wiki and didn't see this explained.

does anyone know of a 'howto' explaining this?  or, if Devrim or someone
wants to explain it here, I'll endeavor to update the wiki after testing
it on my system...



--
john r pierce                            N 37, W 122
santa cruz ca                         mid-left coast

Hi,

On Mon, 2011-09-12 at 18:58 -0700, John R Pierce wrote:
> so I have a centos6 machine running the 9.0.latest from the
> yum.postgresql.org repo...
>
> I'd like to bring up 9.1 on it in parallel, on a different port and
> directory.    but I still want 9.0 to be the default install...   I was
> looking at the PG wiki and didn't see this explained.

Well, the current design is always to have the latest version as the
default version. So, when you install 9.1, it will be the default under
$PATH.

However, after installing 9.1, you can play with alternatives, and set
9.0's priority something between 910 and 920, so that they will be
picked up.

rpm -q --scripts postgresql90 will give you the scripts that we run for
alternatives. Just change 900 with 911 or so.

Regards,
--
Devrim GÜNDÜZ
Principal Systems Engineer @ EnterpriseDB: http://www.enterprisedb.com
PostgreSQL Danışmanı/Consultant, Red Hat Certified Engineer
Community: devrim~PostgreSQL.org, devrim.gunduz~linux.org.tr
http://www.gunduz.org  Twitter: http://twitter.com/devrimgunduz