Re: Problem upgrading from 10 to 14 with pg_upgrade: unexpected error upgrading "template1" database for some clusters

Hi,

Le lun. 11 juil. 2022 à 21:22, Ken Yeung <Ken(dot)Yeung(at)rib-software(dot)com> a
écrit :

> In the course of upgrading a bunch of database clusters from 10 to 14
> using pg_upgrade tool, some databases result in the following error
> recorded in pg_upgrade_dump_1.log, such that cluster upgrade fails.
> FATAL: password authentication failed for user "postgres"
>
This error happens on the restoration-side (Pg14)

pg_restore: error: connection to server at "localhost" (::1), port 50432
failed: FATAL: password authentication failed for user "postgres"

means that you try to use ipv6 (is it possible, according to your target
postgresql.conf file?)
Does your Pg14 target pg_hba.conf file allow this kind of connection?

Last year, I had to migrate 200+ PostgreSQL instance from Pg9.5 to Pg12, I
discovered some configuration differences while performing this kind of
pre-upgrade tests.

>
> This was done on Microsoft Windows 11.
> PostgreSQL 10 and 14 used are built using Visual Studio 2015.
> Only a small number of database clusters has this problem, around 2 of 200.
> It appears these database are used from earlier cluster upgrade from 9.4
> to 10 as well.
>
> It would be very helpful if there is any possible workaround to overcome
> this problem.
>
> I attached a sample pg_upgrade_dump_1.log reported this error.

Hope it helps,
Thomas