Re: Peer authentication failed ???

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

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