On Sun, Jan 24, 2021 at 2:58 PM rob...@redo2oo.ch <rob...@redo2oo.ch> wrote: > > root@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.
