On 09/10/2017 02:39 AM, Magnus Hagander wrote:
On Sat, Sep 9, 2017 at 6:44 PM, <techmail+pgsql@xxxxxxxxxxxxxxxxx
<mailto:techmail+pgsql@xxxxxxxxxxxxxxxxx>> wrote:
Hi,
I'm trying to get pg_ident to map "user1" and "user1@xxxxxxxxxxxx" to "user1" in postgres, or
vice versa. I'm not picky about which way works.
Kerberos authentication works. I've gotten "user1" to login successfully with a Kerberos ticket,
but I'm not able to get "user1@xxxxxxxxxxxx" to match.
Environment:
* PostgreSQL 9.6 from PostgreSQL repos
* CentOS 7
* FreeIPA for Kerberos, LDAP, etc.
* Realm A.DOMAIN.TLD
* "user1" database exists
* "user1" role exists
* Logging into CentOS usernames are configured to drop the domain, so they appear as "user1"
rather then "user1@xxxxxxxxxxxx".
pg_hba.conf:
local all postgres peer
host all all 127.0.0.1/32 <http://127.0.0.1/32> md5
host all all ::1/128 md5
host all all 192.168.1.0/24 <http://192.168.1.0/24> gss include_realm=1
map=testnet krb_realm=A.DOMAIN.TLD #This is on one line. Thunderbird is truncating lines.
pg_ident.conf:
testnet /^([0-9A-Za-z_-]+)@A\.DOMAIN\.TLD$ \1
testnet /^([0-9A-Za-z_-]+)$ \1
Regex that works for both in regexr.com <http://regexr.com>:
/^([0-9A-Za-z-_]+)(@A\.DOMAIN\.TLD)?$/gm
Command and lines from pg_log:
$ psql -h db0 # Logged in as user1 with Kerberos ticket
< 2017-09-09 19:50:49.376 CDT - 192.168.1.201 [unknown] > LOG: connection received:
host=192.168.1.201 port=44918
< 2017-09-09 19:50:49.398 CDT - 192.168.1.201 user1 > LOG: connection authorized: user=user1
database=user1
< 2017-09-09 19:50:50.912 CDT - 192.168.1.201 user1 > LOG: disconnection: session time:
0:00:01.537 user=user1 database=user1 host=192.168.1.201 port=44918
$ psql -h db0 -U user1@xxxxxxxxxxxx # Logged in as user1 with Kerberos ticket
< 2017-09-09 19:50:54.959 CDT - 192.168.1.201 [unknown] > LOG: connection received:
host=192.168.1.201 port=44920
< 2017-09-09 19:50:55.023 CDT - 192.168.1.201 user1@xxxxxxxxxxxx > LOG: no match in usermap
"testnet" for user "user1@xxxxxxxxxxxx" authenticated as "user1@xxxxxxxxxxxx"
< 2017-09-09 19:50:55.023 CDT - 192.168.1.201 user1@xxxxxxxxxxxx > FATAL: GSSAPI authentication
failed for user "user1@xxxxxxxxxxxx"
< 2017-09-09 19:50:55.023 CDT - 192.168.1.201 user1@xxxxxxxxxxxx > DETAIL: Connection matched
pg_hba.conf line 87: "host all
all 192.168.1.0/24 <http://192.168.1.0/24> gss include_realm=1 map=testnet
krb_realm=A.DOMAIN.TLD"
Is this something that is possible, or is it something where I need to pick one way to do it?
This looks like you are trying to connect with the actual username user1¡A.DOMAIN.TLD. pg_ident only
sets what you are allowed to log in as, not what it will attempt.
If you are using psql, you are probably doing something like "psql -h myserver". You need to add the
user, so "psql -h myserver -U user1", to instruct it of which username to actually use for the login.
--
Magnus Hagander
Me: https://www.hagander.net/ <http://www.hagander.net/>
Work: https://www.redpill-linpro.com/ <http://www.redpill-linpro.com/>
Hi Magnus,
Yes, the system username is "user1", per the default ipa-client-install SSSD setup, and the map is
working for that. Without the map, I have to specify the full Kerberos username, user@xxxxxxxxxx, in
the psql command.
Works with map:
$ psql -h db0 #Implied -U user1 -d user1
$ psql -h db0 -U user1 -d user1
Does not work with map:
$ psql -h db0 -U user1@xxxxxxxxxxxx -d user1
Works without map (provided I have a role created):
$ psql -h db0 -U user1@xxxxxxxxxxxx -d user1
Does not work without map:
$ psql -h db0 #Implied -U user1 -d user1
$ psql -h db0 -U user1 -d user1
I can get one style or the other to work, but I just can't get both to work a the same time.
If this is something that can't be done, I understand, but it looks like it should be possible per
the documentation.
Thanks,
Ryan
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