Re: pgbouncer with ldap

On 13/9/19 10:19 π.μ., Ayub M wrote:
> 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

ok, pgbouncer should be able to read /etc/pam* files.
Did you miss the
|# chown root:staff ~pgbouncer/pgbouncer-1.9.0/pgbouncer |
|# chmod +s ~pgbouncer/pgbouncer-1.9.0/pgbouncer|
part?

>
> 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 <mailto: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 <mailto: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 <mailto: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

--
Achilleas Mantzios
IT DEV Lead
IT DEPT
Dynacom Tankers Mgmt