Re: Having trouble with connecting to database via kerberos

Hi

On Fri, Aug 28, 2020 at 9:59 AM Haskin, Daniel J <DHaskin(at)verisk(dot)com> wrote:

> Hello!
>
> I wonder if you folks can help me. I am having the hardest time location
> documentation on, or otherwise figuring out how to connect to a
> Kerberos-authenticated database using pgAdmin in Amazon RDS.
>
> I can connect to the database just fine with psql + kinit on linux, but
> the rest of my team is on Windows and pgAdmin.
>
> How, in general, do you connect to a Kerberos-authenticated database from
> pgAdmin on Windows? I haven't been able to find the answer to this question.
>
> In particular, I am connecting to a 12.3 pgsql database hosted on amazon
> RDS. No matter what I try, whenever I try to auth via Kerberos, I get this
> error:
>
> SSPI continuation error: The specified target is unknown or unreachable
> (80090303)
>
> If I connect using a local pg user, the connection succeeds.
> If I connect using kinit + psql on linux, the connection succeeds.
> If I connect using the correct host endpoint, I get the error above.
> If I connect using the AWS alternative method described here[1] of
> connecting to <endpoint>.<aws-ad-domain>, I *still* get the error above.
>
> Is there anyone who can help?
>
> 1:
> https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/postgresql-kerberos-connecting.html

pgAdmin doesn't (yet) officially support kerberos authentication. You can
use SSPI if you're connecting from Windows to a Windows-hosted PostgreSQL
server in a domain or on a the same machine (I actually verified that works
yesterday), or you can in theory use GSSAPI to authenticate to a Linux
hosted server if you're on a Linux client (I'm working on verifying that at
the moment).

Once I've got those scenarios working and verified, I'll move on to
figuring out how to handle Windows/Mac clients connecting with GSSAPI.

Note that SSPI/GSSAPI will require that you're running pgAdmin in Desktop
mode. It will not work in Server mode (because the server will typically be
running under a different user account). There's a feature request for that
in the backlog.

--
Dave Page
Blog: http://pgsnake.blogspot.com
Twitter: @pgsnake

EDB: http://www.enterprisedb.com