Re: Clarification of documentation detail for upgrading minor version

Thanks to Adrian I have managed to get around this issue.  Essentially
I had to go old school and create a tar archive of the install on
another comparable system, copy that around and then install via an
untar.  (the repo access was not available as it is a server behind
many FW and in a secure vDatacentre).
The one issue I ended up with (since the system runs under systemd)
was that the directory /var/run/postgresql did not exist for some
reason and I had to create it as when I tried to restart it there was
a failure message.  I am not sure if that was an artefact from moving
from 9.6.6 to 9.6.16 or not but I mention it in case someone has a
similar issue when starting up after the "upgrade".

Phil

On Thu, 23 Jan 2020 at 15:46, Adrian Klaver <adrian.klaver@aklaver.com> wrote:
>
> On 1/23/20 3:28 AM, Phil Fisher wrote:
> > Hello
> >
> > I have a 9.6.6 system that misses some features.  It is installed on a
> > RHEL7 OS.  Reading the 9.6 documentation to upgrade I find the
> > following:
> >
> >   "
> >
> > 18.6. Upgrading a PostgreSQL Cluster
> >
> > This section discusses how to upgrade your database data from one
> > PostgreSQL release to a newer one.
> >
> > PostgreSQL major versions are represented by the first two digit
> > groups of the version number, e.g., 8.4. PostgreSQL minor versions are
> > represented by the third group of version digits, e.g., 8.4.2 is the
> > second minor release of 8.4. Minor releases never change the internal
> > storage format and are always compatible with earlier and later minor
> > releases of the same major version number, e.g., 8.4.2 is compatible
> > with 8.4, 8.4.1 and 8.4.6. To update between compatible versions, you
> > simply replace the executables while the server is down and restart
> > the server. The data directory remains unchanged — minor upgrades are
> > that simple."
> >
> > Can someone please clarify what actions should be taken for this (see
> > penultimate sentence)?  If I install (yum upgrade for example) then I
> > believe all updated files will be updated and that does not seem to be
> > the message in the above.  While I can install to a different area
> > (and since I will be using the PGDG repo it WILL be different) I could
>
> Are you currently using the PGDG repos?
>
> If so then the files will be installed in the same locations. They will
> just be the new versions.
>
> > do this and manually copy the 'bin' directory.  However, I would have
> > expected to have to copy the 'libs' directory as well and perhaps
> > others (excluding doc etc.).  I will be moving to a 9.6.16 version so
> > that seems to comply with the restrictions mentioned in the
> > documentation (and for the avoidance of good people saying use a later
> > version and do a major upgrade that is not currently
> > possible/feasible).
> >
> > Grateful for any detailed advice on the correct path for the above.
> > Thanks.
> >
>
>
> --
> Adrian Klaver
> adrian.klaver@aklaver.com



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Phil Fisher
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