Re: pgbouncer with ldap

Stumbled in the first step - PAM authentication via pgbouncer. After
compiling pgbouncer with the pam plug-in, I am unable to login into the db
- throws PAM error message. Please help.

User created with the same password as linux user --
localhost:~$ psql -h dbhost -p 3306 -U admin -W db1
db1=> create user testuser password 'hello123';
CREATE ROLE

[ec2-user(at)ip-1(dot)1(dot)1(dot)1 pam.d]$ psql -h localhost -p 5432 testdb -U testuser
Password for user testuser:
psql: ERROR: auth failed

Log entries - pgbouncer.log
2019-09-13 06:51:47.180 UTC [5752] LOG C-0x1243020: testdb/testuser(at)[::1]:52408
login attempt: db=testdb user=testuser tls=no
2019-09-13 06:51:47.180 UTC [5752] NOISE safe_send(12, 9) = 9
2019-09-13 06:51:47.180 UTC [5752] NOISE resync(12): done=86, parse=86,
recv=86
2019-09-13 06:51:47.180 UTC [5752] NOISE resync(12): done=0, parse=0, recv=0
2019-09-13 06:51:47.180 UTC [5752] NOISE safe_recv(12, 4096) = 14
2019-09-13 06:51:47.180 UTC [5752] NOISE C-0x1243020:
testdb/testuser(at)[::1]:52408
read pkt='p' len=14
2019-09-13 06:51:47.180 UTC [5752] DEBUG C-0x1243020:
testdb/testuser(at)[::1]:52408
pam_auth_begin(): pam_first_taken_slot=1, pam_first_free_slot=1
2019-09-13 06:51:47.180 UTC [5752] DEBUG pam_auth_worker(): processing slot
1
2019-09-13 06:51:47.180 UTC [5752] WARNING pam_authenticate() failed:
Authentication failure
2019-09-13 06:51:47.181 UTC [5752] DEBUG pam_auth_worker(): authorization
completed, status=3
2019-09-13 06:51:47.386 UTC [5752] LOG C-0x1243020: testdb/testuser(at)[::1]:52408
closing because: auth failed (age=0s)
2019-09-13 06:51:47.386 UTC [5752] WARNING C-0x1243020:
testdb/testuser(at)[::1]:52408
pooler error: auth failed

Able to login as testuser
[ec2-user(at)ip-1(dot)1(dot)1(dot)1 pam.d]$ su - testuser
Password:
Last login: Fri Sep 13 06:21:12 UTC 2019 on pts/1
[testuser(at)ip-1(dot)1(dot)1(dot)1 ~]$ id
uid=1001(testuser) gid=1001(testuser) groups=1001(testuser)
context=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023

The user was created as follows
[root(at)ip-1(dot)1(dot)1(dot)1 ~]# adduser -p hello123 testuser
[root(at)ip-1(dot)1(dot)1(dot)1 ~]# id testuser
uid=1001(testuser) gid=1001(testuser) groups=1001(testuser)

Here is the pgbouncer.ini config
[ec2-user(at)ip-1(dot)1(dot)1(dot)1 etc]$ less pgbouncer.ini | grep -v '^$' | grep -v '^;'
[databases]
testdb = host=dbhost port=3306 dbname=db1
[users]
[pgbouncer]
logfile = /var/log/pgbouncer/pgbouncer.log
pidfile = /var/run/pgbouncer/pgbouncer.pid
listen_addr = *
listen_port = 5432
auth_type = pam

Am I missing something? Any permissions?

On Thu, Sep 12, 2019 at 4:54 AM Ayub M <hiayub(at)gmail(dot)com> wrote:

> Okay, thanks for the response. Unfortunately Aurora does not expose these
> files or I should say there is no concept of these files in AWS managed
> Aurora DB service. Anyway I will give a try and let you know.
>
> On Thu, Sep 12, 2019 at 1:52 AM Achilleas Mantzios <
> achill(at)matrix(dot)gatewaynet(dot)com> wrote:
>
>> On 11/9/19 2:47 μ.μ., Ayub M wrote:
>>
>> Achilleas, for this setup to work are changes to postgresql.conf and
>> pg_hba.conf needed? I am trying to implement this for AWS rds Aurora where
>> these files are not accessible.
>>
>> Those files are needed in any case if you work with postgresql.
>> Unfortunately no experience with Aurora. He have been building from source
>> for ages.
>>
>> On Mon, Sep 9, 2019, 6:46 AM Achilleas Mantzios <
>> achill(at)matrix(dot)gatewaynet(dot)com> wrote:
>>
>>> On 9/9/19 12:41 μ.μ., Laurenz Albe wrote:
>>> > Christoph Moench-Tegeder wrote:
>>> >>> It has hba and via hba file one can specify ldap connections
>>> >>>
>>> >>> https://www.postgresql.org/docs/9.3/auth-pg-hba-conf.html
>>> >> https://pgbouncer.github.io/config.html#hba-file-format
>>> >> "Auth-method field: Only methods supported by PgBouncer’s auth_type
>>> >> are supported", and "ldap" is not supported.
>>> >> When there's no ldap support in pgbouncer, there's no ldap support
>>> >> in pgbouncer.
>>> > To throw in something less tautological:
>>> >
>>> > PgBouncer supports PAM authentication, so if you are on UNIX,
>>> > you could use PAM's LDAP module to do what you want.
>>> Right, I had written a blog about it :
>>>
>>> https://severalnines.com/database-blog/one-security-system-application-connection-pooling-and-postgresql-case-ldap
>>>
>>> However, I always wished (since my first endeavors with pgbouncer) it
>>> was less complicated.
>>> >
>>> > Yours,
>>> > Laurenz Albe
>>>
>>>
>>> --
>>> Achilleas Mantzios
>>> IT DEV Lead
>>> IT DEPT
>>> Dynacom Tankers Mgmt
>>>
>>>
>>>
>>>
>>
>> --
>> Achilleas Mantzios
>> IT DEV Lead
>> IT DEPT
>> Dynacom Tankers Mgmt
>>
>>
>
> --
> Regards,
> Ayub
>

--
Regards,
Ayub