Kerberized login to Postgres database

From: Eugene Budanov <eugene(dot)budanov(at)rosalab(dot)ru>
To: pgsql-admin(at)postgresql(dot)org
Subject: Kerberized login to Postgres database
Date: 2012-01-10 06:05:14
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Hi all!

I have a problem with kerberizing PostgreSQL 9.1.1.

PostgreSQL and Kerberos installed at different computers in network. I'm using internal network in VirtualBox 4.1.6.
There are no firewalls on both machines.

So, let's see pg_hba.conf:

less /var/lib/pgsql/data/pg_hba.conf


# "local" is for Unix domain socket connections only
local all all trust
# IPv4 local connections:
host all all trust
host all all krb5

And content of my postgresql.conf

# Kerberos and GSSAPI
krb_server_keyfile = '/var/lib/pgsql/data/krb5.keytab'
#krb_srvname = 'postgres' # (Kerberos only)
#krb_caseins_users = off

Pricipals in keytab file:


Passwords for principals in keytab randomly generated by kadmin.local during export to keytab.

User postgres is exists in database of course.

Now, let's try connect to postgres database through kerberos:

[postgres(at)localhost eugene]$ kinit postgres
Password for postgres(at)DOMAIN(dot)INT:
[postgres(at)localhost eugene]$ klist
Ticket cache: FILE:/tmp/krb5cc_481
Default principal: postgres(at)DOMAIN(dot)INT
Valid starting Expires Service principal
12/30/11 12:21:14 12/31/11 12:21:14 krbtgt/DOMAIN(dot)INT(at)DOMAIN(dot)INT
renew until 01/06/12 12:21:14

All works good. Other services such as kerberized login for operating system works fine.

But if try connect to postgres database:

[postgres(at)localhost eugene]$ psql -h -U postgres
psql: Kerberos 5 authentication rejected: Wrong principal in request

What I'am doing wrong? Any ideas? Questions?

Thanks in advance for your help.
Best regards,
Budanov Eugene


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