Postgres user authentication with secure LDAP

From: "Tang, Ronald K CIV FNMOC, N6" <ronald(dot)k(dot)tang(at)navy(dot)mil>
To: "pgsql-admin(at)postgresql(dot)org" <pgsql-admin(at)postgresql(dot)org>
Subject: Postgres user authentication with secure LDAP
Date: 2017-08-10 21:02:28
Message-ID: DBF3E054DB2B404ABFD101589632D6521E02E0E7@NAWEMUGUXM02V.nadsuswe.nads.navy.mil
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Hi,

I am trying to configure my Postgres server to use LDAP for authentication. My pg_hba.conf config line is:

ldap ldapserver=ldaps://myldaps.company.com ldapport=636 ldaptls=1 ldapprefix="uid=" ldapsuffix=",ou=People,o=my.company.com"

I queried the LDAP server successfully with the 'ldapsearch' tool with the same DN. However, I cannot get it to work successfully on Postgres. I have ssl=on and all server and CA certs installed.

Postgres version 9.5.6.

Error log:

could not initialize LDAP: No such file or directory
LDAP authentication failed for user "user1"
auth_failed, auth.c:288

---------------------------------------
Thanks for any helps.
Ron

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