Re: Peer authentication failed ??? - Mailing list pgsql-general

From Peter J. Holzer
Subject Re: Peer authentication failed ???
Date
Msg-id 20231003133736.zqxkqrbnmp44kpwg@hjp.at
Whole thread Raw
In response to Peer authentication failed ???  (Amn Ojee Uw <amnojeeuw@gmail.com>)
Responses Re: Peer authentication failed ???
List pgsql-general
On 2023-10-03 05:55:51 -0400, Amn Ojee Uw wrote:
> psql -U my_group_worker -d my_group_db
>
> psql: error: connection to server on socket "/var/run/postgresql/.s.PGSQL.5432"
> failed: FATAL:  Peer authentication failed for user "my_group_worker"
>
> *** What am I doing wrong?

PostgreSQL uses the first matching rule from pg_hba.conf. Presumably
(because that's the default on Debian/Ubuntu) you have it set up to use
peer authentication on the unix socket and password authentication
(scram or md5) on everything else.

You are connecting via the Unix socket (/var/run/postgresql/.s.PGSQL.5432),
so the server will attempt peer authentication and nothing else. To get
it to attempt password authentication connect via a tcp socket:

psql -U my_group_worker -h localhost -d my_group_db

(More conveniently set up ident authentication for your users, then you
don't need a password.)

        hp

--
   _  | Peter J. Holzer    | Story must make more sense than reality.
|_|_) |                    |
| |   | hjp@hjp.at         |    -- Charles Stross, "Creative writing
__/   | http://www.hjp.at/ |       challenge!"

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