At least on debian / ubuntu, the default is peer auth: https://salsa.debian.org/postgresql/postgresql-common/-/blob/c1bc1fd53edb76a36c05dd71c19fad384e209041/pg_

At least on debian / ubuntu, the default is peer auth: https://salsa.debian.org/postgresql/postgresql-common/-/blob/c1bc1fd53edb76a36c05dd71c19fad384e209041/pg_createcluster#L79 https://salsa.debian.org/postgresql/postgresql-common/-/blob...