Gustavsson Mikael <mikael.gustavsson@smhi.se> writes:
> pgsql-13 with require:
> $ /usr/pgsql-13/bin/psql "dbname=postgres user=kalle host=server sslmode=require"
> Password for user kalle:
> psql (13.1)
> Type "help" for help.
That is just bizarre. libpq should not ignore the sslmode=require option
like that, unless it thinks it's making a Unix-socket connection, which
it should not think given the host specification. (There's not a slash
in your server's real name, is there? But if there was, v11 should
misbehave too.)
It seems like there must be some environment setting, or maybe a service
file, changing the behavior from what it should be on its face. But
that theory has big flaws too: an explicit sslmode=require setting should
not be overridable from environment, and even if it was, why wouldn't v11
act the same?
The only other conclusion I can think of is that your copy of libpq.so
is broken. Maybe you should try redownloading/reinstalling v13.
regards, tom lane