Re: ubuntu 18: PostgreSQL does not start. how can I totally remove and reinstall it

One small note. Aside from the fact that your server is running from a
different port, psycopg2 does not support authentication without password
afaik. It has bit me twice

On Sun, Jan 24, 2021 at 12:34 PM Julien Rouhaud <rjuju123(at)gmail(dot)com> wrote:

> On Sun, Jan 24, 2021 at 2:58 PM robert(at)redo2oo(dot)ch <robert(at)redo2oo(dot)ch>
> wrote:
> >
> > root(at)elfero-test:~/scripts# pg_lsclusters
> > Ver Cluster Port Status Owner Data directory Log file
> > 10 main 5433 online postgres /var/lib/postgresql/10/main
> /var/log/postgresql/postgresql-10-main.log
> > [...]
> > psycopg2.OperationalError: could not connect to server: Connection
> refused
> > Is the server running on host "localhost" (127.0.0.1) and accepting
> > TCP/IP connections on port 5432?
>
> It looks like your instance is configured to listen on port 5433, not 5432.
>
>
>