Re: Upgrade Ubuntu 22 -> 24 may break PostgreSQL

On 8/31/24 09:54, Peter J. Holzer wrote:
> 'Tis the season again.
>
> Ubuntu 24.04.1 has just been released, so many Ubuntu LTS users will now
> be prompted to upgrade from 22.04 to 24.04.

Which I ignore.

>
> A word of warning to those who use Postgresql from the Ubuntu repo (not
> PGDG):

Why I do use the PGDG repo's.

>
> As usual, a newer Ubuntu version comes with a newer Postgres version (16
> instead of 14). Also as usual, I got a message during the upgrade that
> Postgres 14 is obsolete,. but the binaries have been left installed and
> I should upgrade to Postgres 16 manually ASAP.
>
> But after the reboot, PostgreSQL failed to start because it needed a
> shared library (libldap) which was no longer there. So a normal
> pg_upgradecluster wouldn't work.

sudo apt install libldap-X.x did not work?

>
> In my case the quickest way to recover was to install postgresql-14 on a
> VM, copy the data direcory into that instance and make a fresh dump,
> then install postgresql-16 on my laptop and restore the dump. Annoying,
> but no big deal for the small test database I keep on my laptop. If you
> have multi-terabyte databases, your situation may be different.
>
> I'm not exactly sure what went wrong (I got some conflicts during the
> upgrade and maybe I shouldn't have invoked apt autoremove?), and you may
> not have this problem, but make sure you have a backup before the
> upgrade.
>
> hp
>
>

--
Adrian Klaver
adrian(dot)klaver(at)aklaver(dot)com