![]() Sequel includes a comprehensive ORM layer for mapping records to Ruby objects and handling associated records. Sequel provides thread safety, connection pooling and a concise DSL for constructing SQL queries and table schemas. Sequel is a simple, flexible, and powerful SQL database access toolkit for Ruby. On Ubuntu 18.04, providing unix-sockets, it seems that the -h argument and its parameter, specifying port or socket-dir is needed.īy the way, neither the PGHOST nor the PGPORT environment variables were set, but undefined.Sequel: The Database Toolkit for Ruby ¶ ↑ Have i overseen something? At least my solution, specifying the socket dir, should work anyway. In all that cases psql tries to connect not via socket, but via TCP. The same result if the server version 13 is disabled so that only one single db-server (9.6) on standard port 5432 is running. But it does not! It does even not when i issue psql -p 5432 Should connect via socket to my PostgreSQL 9.6 server. lines in pg_hba.conf of both, 9.6 and 13 so that only sockect connections will be possible.Īnyway, following the comment of a simple psql In fact, i have a PostgreSQL 9.6 running on port 5432 and the 13-version running on another port simultaneously.įor a test i disabled the. Did it for reasons of privacy and simplicity. ![]() I must confess i cheated in "Citation from my console" above as far as "hostname" is not the real hostname of my computer and 5432 is not the port my PostgreSQL 13 is serving at. This should result in the need to specify host or socket-dir (-h argument) when running the db-server on another than the standard port 5432. Since theĭatabase server uses the same default, you will not have to specify The default port number is determined at compile time. Thank you for the hint, that is correct, but is directly followed by the relativating To a server on the local host, or via TCP/IP to localhost on machines If you omit the host name, psql will connect via a Unix-domain socket Geben Sie »help« für Hilfe posted a comment citing from man psql: Postgres=# alter role postgres password 'secret' Postgres=# psql -h /var/run/postgresql -p 5432 Postgres=# alter role postgres password null Or export PGPORT=5432 psql -h /var/run/postgresqlĪnd further on in the console session just use psql -h /var/run/postgresqlĮspecially for the "-h" ond "-p" options.Ĭitation from my console, password was not required nor asked (sys lang is psql -h /var/run/postgresql -p 5432 To connect via socket: psql -h /var/run/postgresql -p 5432 Once using psql to connect via unix-socket the first line in pg_hba.conf works and (super-) user postgres may set his password to null or any string and still connect without beeing asked for password. Then, trying to connect using the psql program an error message will occur indicating that psql tried to connect via TCP. You may also "brutally" issue systemctl restart postgresql ![]() Pg_reload_conf(), or using kill -HUP) to make it re-read the file. Postmaster (using pg_ctl reload, calling the SQL function If you edit the file on an active system, you will need to signal the lines in pg_hba.conf and make the PostgreSQL server reread the modified lines. The unmentioned "problem" is that the psql program uses by default a TCP connection (even) to localhost. ![]() This line is related to a (unix-) socket connection (from psql) to the PostgreSQL server. So it should be sufficient to just use the (default) first line local all postgres peer The docs say clear: the first line in pg_hba.conf that fits is taken and all further lines are ignored. The following assumes that the login is done using the psql (wrapper-) program on the computer on which the PostgreSQL-server is running.Īfter reading the PostgreSQL 13.0 Documentation, chapter 20 (Client Authentication), i wondered why to change the. As of, using PostgreSQL 13 on ubuntu 18, i stumbled over the answers given by (and - meanwhile deleted), locking myself user postgres passwordless out.
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