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From: Chris Miller <[email protected]>
To: pgsql-general <[email protected]>
Subject: Re: Test mail for pgsql-general
Date: Tue, 10 Sep 2024 16:21:10 -0700 (PDT)
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>

Hi Folks, 

I am confused about authentication. I understand that in the local connection case, I have choices of “peer”, and “md5” (password). 

In pg_hba.conf, I have the lines: 

local all all peer 

local all all md5 

I have an OS user “postgres”, and I can “su – postgres”, which brings me to a shell and I can invoke psql successfully. 

I believe that, as root, I should be able to “psql -U postgres -W” and logon with a password. I can’t. When I try, I get: 

psql: error: connection to server on socket "/var/run/postgresql/.s.PGSQL.5432" failed: FATAL: Peer authentication failed for user "postgres" 

Notice I am failing “peer” authentication. Seems to me that if I explicitly ask for a password, “-W”, I should be using “md5” authentication. 

Can anybody straighten me out? 

Thanks for the help, 
-- 
Chris. 

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