unbound v1.6.0 python module on debian 9

Christopher Hearn chris at convorelay.com
Fri Oct 26 14:35:28 UTC 2018 

If I install the same python3 dependencies, the problem goes away.  However, my python script is now throwing errors since it doesn't seem to be python3 compatible.

I'm using the packaged version available for debian 9.  I guess it's compiled to use python3.

> On Oct 26, 2018, at 6:12 AM, George Thessalonikefs via Unbound-users <unbound-users at nlnetlabs.nl> wrote:
> 
> Hi Christopher,
> 
> The only way that I can reproduce the same unbound output is by
> removing/renaming the file so that unbound cannot find it.
> 
> Your configuration seems correct but maybe some of the included
> configurations introduce dubious options?
> 
> Also, do you use a packaged version of unbound or you compile your own?
> 
> -- George
> 
> On 25/10/2018 22:52, Christopher Hearn via Unbound-users wrote:
>> This is what I have:
>> 
>> server:
>> verbosity: 1
>> statistics-cumulative: "yes"
>> extended-statistics: "yes"
>> num-threads: 2
>>  interface: "0.0.0.0"
>>         interface: "::0"
>>         interface-automatic: yes
>>         outgoing-port-permit: "32768-65535"
>>  outgoing-port-avoid: "0-32767"
>>         chroot: ""
>> root-hints: "/etc/unbound/root.hints"
>>         module-config: "validator python iterator"
>>         directory: "/etc/unbound"
>> cache-max-ttl: 300
>>         log-queries: no
>>         do-not-query-localhost: no
>>         include: /etc/unbound/unbound.local.d/*.conf
>> python:
>>         python-script: "/etc/unbound/dns-backend.py"
>> remote-control:
>> control-enable: yes
>> include: "/etc/unbound/unbound.conf.d/*.conf"
>> 
>> Here's what I see when I try to run unbound:
>> 
>> unbound -dv -c unbound.conf
>> [1540500365] unbound[18398:0] notice: Start of unbound 1.6.0.
>> Traceback (most recent call last):
>>   File "<string>", line 1, in <module>
>> ImportError: No module named 'unboundmodule'
>> 
>> However, it's there:
>> 
>> ll /usr/lib/python2.7/dist-packages/ | grep unbound
>> -rw-r--r-- 1 root root 102230 Aug 27  2017 unboundmodule.py
>> -rw-r--r-- 1 root root  85737 Oct 19 15:05 unboundmodule.pyc
>> -rw-r--r-- 1 root root  36348 Aug 27  2017 unbound.py
>> -rw-r--r-- 1 root root  39760 Oct 19 15:05 unbound.pyc
>> -rw-r--r-- 1 root root  80016 Aug 27  2017 _unbound.x86_64-linux-gnu.so
>> 
>> 
>>> On Oct 25, 2018, at 6:00 AM, unbound-users-request at nlnetlabs.nl
>>> <mailto:unbound-users-request at nlnetlabs.nl <mailto:unbound-users-request at nlnetlabs.nl>> wrote:
>>> 
>>> Date: Wed, 24 Oct 2018 14:38:00 +0200
>>> From: George Thessalonikefs <george at nlnetlabs.nl <mailto:george at nlnetlabs.nl>
>>> <mailto:george at nlnetlabs.nl <mailto:george at nlnetlabs.nl>>>
>>> To: unbound-users at nlnetlabs.nl <mailto:unbound-users at nlnetlabs.nl> <mailto:unbound-users at nlnetlabs.nl <mailto:unbound-users at nlnetlabs.nl>>
>>> Subject: Re: unbound v1.6.0 python module on debian 9
>>> Message-ID: <b9059648-e1dd-2ecb-3b96-94b1097405f0 at nlnetlabs.nl <mailto:b9059648-e1dd-2ecb-3b96-94b1097405f0 at nlnetlabs.nl>
>>> <mailto:b9059648-e1dd-2ecb-3b96-94b1097405f0 at nlnetlabs.nl <mailto:b9059648-e1dd-2ecb-3b96-94b1097405f0 at nlnetlabs.nl>>>
>>> Content-Type: text/plain; charset=utf-8
>>> 
>>> Hi Christopher,
>>> 
>>> What is the error you are getting from unbound?
>>> Can you share some bits of your configuration file? I am mainly
>>> interested in the following options:
>>>  chroot:
>>>  directory:
>>>  module-config:
>>>  python-script:
>>> 
>>> -- George
>>> 
>>> On 24/10/2018 14:29, Christopher Hearn via Unbound-users wrote:
>>>> Thanks for the reply George. ?When I run what you suggested, I see
>>>> /usr/lib/python2.7/dist-packages, and the unboundmodule.py is indeed in
>>>> there. ?If I run my python script on it?s own from my shell, it works
>>>> fine. ?unbound itself still does not see it, nor any of the other
>>>> dependencies in that directory. ?Any idea why this might be?
>>>> 
>>>>> On Oct 24, 2018, at 6:00 AM, unbound-users-request at nlnetlabs.nl <mailto:unbound-users-request at nlnetlabs.nl>
>>>>> <mailto:unbound-users-request at nlnetlabs.nl <mailto:unbound-users-request at nlnetlabs.nl>>
>>>>> <mailto:unbound-users-request at nlnetlabs.nl <mailto:unbound-users-request at nlnetlabs.nl>> wrote:
>>>>> 
>>>>> Date: Tue, 23 Oct 2018 18:13:23 +0200
>>>>> From: George Thessalonikefs <george at nlnetlabs.nl <mailto:george at nlnetlabs.nl>
>>>>> <mailto:george at nlnetlabs.nl <mailto:george at nlnetlabs.nl>>
>>>>> <mailto:george at nlnetlabs.nl <mailto:george at nlnetlabs.nl>>>
>>>>> To:?unbound-users at nlnetlabs.nl <mailto:?unbound-users at nlnetlabs.nl>
>>>>> <mailto:?unbound-users at nlnetlabs.nl <mailto:?unbound-users at nlnetlabs.nl>> <mailto:unbound-users at nlnetlabs.nl <mailto:unbound-users at nlnetlabs.nl>>
>>>>> Subject: Re: unbound v1.6.0 python module on debian 9
>>>>> Message-ID: <014e436d-11f6-3ce5-e488-011e8d2601a6 at nlnetlabs.nl <mailto:014e436d-11f6-3ce5-e488-011e8d2601a6 at nlnetlabs.nl>
>>>>> <mailto:014e436d-11f6-3ce5-e488-011e8d2601a6 at nlnetlabs.nl <mailto:014e436d-11f6-3ce5-e488-011e8d2601a6 at nlnetlabs.nl>>
>>>>> <mailto:014e436d-11f6-3ce5-e488-011e8d2601a6 at nlnetlabs.nl>>
>>>>> Content-Type: text/plain; charset=utf-8
>>>>> 
>>>>> Hi Christopher,
>>>>> 
>>>>> On 23/10/2018 17:24, Christopher Hearn via Unbound-users wrote:
>>>>>> I?m trying to set up a server running unbound and a python script.
>>>>>> ?This is working OK on an older server running version 1.4.2. ?On the
>>>>>> newer one, I can?t seem to get unbound to see the python script
>>>>>> dependencies. ?I do recall on the old server, this was because chroot
>>>>>> was enabled. ?Once I disabled it in the config file via chroot: ??,
>>>>>> it was fine. ?It?s disabled on the new one too, but still doesn?t
>>>>>> seem to help. ?If I symlink the requested file from
>>>>>> /usr/lib/python2.7/dist-packages/unboundpython.py to /etc/unbound/,
>>>>>> that resolves that error, but more come up because of course it can?t
>>>>>> see the other libraries. ?This leads me to believe that unbound isn?t
>>>>>> looking out of /etc/unbound/ even though chroot is disabled. ?Is
>>>>>> there something else I?m missing?
>>>>>> 
>>>>> 
>>>>> I am assuming that you want to use a python script with unbound's python
>>>>> module.
>>>>> 
>>>>> I see that when initializing the python module, unbound appends to the
>>>>> sys path also the directory reported by Python as the
>>>>> "platform-dependent include directory" [1].
>>>>> 
>>>>> You can find that directory by starting up the Python interpreter (the
>>>>> same that unbound will also use; in case of Python virtual environments)
>>>>> and typing:
>>>>>>> import distutils.sysconfig
>>>>>>> distutils.sysconfig.get_python_lib(1,0)
>>>>> '/usr/local/lib/python2.7/site-packages' (in my case)
>>>>> 
>>>>> As a side note you can also achieve the same with chroot enabled but
>>>>> then you would need to link the same python directory structure inside
>>>>> the chroot in order for unbound to find the libraries.
>>>>> 
>>>>> [1]
>>>>> https://docs.python.org/3.7/distutils/apiref.html?highlight=get_python_lib#distutils.sysconfig.get_python_lib
>>>>> 
>>>>> -- George

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