Re: BUG #19075: pg_upgradecluster does not copy conf.d/* during cluster upgrade

On Mon, Oct  6, 2025 at 05:23:26PM +0000, PG Bug reporting form wrote:
> The following bug has been logged on the website:
> 
> Bug reference:      19075
> Logged by:          Sergey Belyashov
> Email address:      sergey.belyashov@gmail.com
> PostgreSQL version: 17.6
> Operating system:   Debian bookworm x86_64
> Description:        
> 
> I try to upgrade DB postgresql 17 to 18. So I install postgresql-18 (from
> PostgreSQL repo) and then run "pg_upgradecluster -m link 17 main"...
> It fails on checking wal_level of the new cluster - wal_level should be
> logical but it is replica.
> Reason: I have redefined default settings in the extra config file places in
> the /etc/postgresql/17/main/conf.d/local.conf.
> So I have wal_level=logical defined there, but not in the
> /etc/postgresql/17/main/postgresql.conf.
> If I redefine it in the /etc/postgresql/17/main/postgresql.conf then
> pg_upgradecluster succeed.

pg_upgradecluster is maintained by Debian, not the Postgres project.  If
you can reproduce the error via pg_upgrade, which we do maintain, we can
research the cause.

-- 
  Bruce Momjian  <bruce@momjian.us>        https://momjian.us
  EDB                                      https://enterprisedb.com

  Do not let urgent matters crowd out time for investment in the future.