On 10/16/2013 8:34 AM, Rory Campbell-Lange wrote:
I've just turned the setting in pg_hba.conf from md5 back to peer and
reloaded the server so that it now reads as:

     local   all             postgres                                peer

Attempting to log in fails with the following error on the console:

     psql: FATAL:  Peer authentication failed for user "postgres"

Thanks for the suggestion for checking the logs. My apologies for not
checking that. The logs show:

     2013-10-16 16:21:16 BST template1 LOG:  local user with ID <abc> does not 
exist
     2013-10-16 16:21:16 BST template1 FATAL:  Peer authentication failed for user 
"postgres"

However /etc/passwd has

     postgres:x:<abc>:<def>:PostgreSQL administrator,,,:/db:/bin/bash

I do not have an ident server running and never have had as far as I
recall.

# su - postgres
$ psql


does that give the same error?

re ident server, domain sockets ('local') use a different mechanism, not authd aka identd... authd/identd would only be used if you specified ident on a HOST connection, something I wouldn't recommend.



--
john r pierce                                      37N 122W
somewhere on the middle of the left coast



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