Hi Pawel,

your configuration stanza isn't entirely correct:
The "ModulePath" options needs to point to a directory, from which
collectd will try to load the corresponding module for each "Import"
line.
In your case
>         ModulePath "/var/lib/collectd/mongodb.py"
should probably be
>         ModulePath "/var/lib/collectd/"
as collectd will append "mongodb.py" automatically when it parses
>         Import "mongodb"

That way, you could also load multiple Python modules from the same path
by using multiple "Import" lines in the configuration.

Regards,
Nils

On 07.02.2016 14:05, Pawel Akonom wrote:
> Hi Nils,
> 
> Yes I am loading the plugin from collectd config file. Here is the python 
> plugin part of my /etc/collectd.conf file:
> 
> LoadPlugin python
> <Plugin python>
>         ModulePath "/var/lib/collectd/mongodb.py"
>         Import "mongodb"
>         <Module mongodb>
>                 Host "127.0.0.1"
>                 Database "virtunomic"
>         </Module>
> </Plugin>
> 
> mongodb.py file is the one from 
> https://github.com/sebest/collectd-mongodb/blob/master/mongodb.py
> 
> collectd can't load the plugin and when I run python script manually - just 
> as a python script I got error: can't load collectd module. The error is in 
> line 5 of the python script "import collectd". In collectd log file there is 
> different error so maybe it could load collectd module when is run from 
> collectd daemon. The error in log file is: ImportError: No module named 
> mongodb
> 
> [root@cisco_aci_dev184 ~]# /etc/init.d/collectd restart ; tail -f 
> /var/log/collectd.log 
> Stopping collectd:                                         [  OK  ]
> Starting collectd:                                         [  OK  ]
> [2016-02-07 04:50:13] python plugin: Error importing module "mongodb".
> [2016-02-07 04:50:13] Unhandled python exception in importing module: 
> ImportError: No module named mongodb
> [2016-02-07 04:50:13] python plugin: Found a configuration for the "mongodb" 
> plugin, but the plugin isn't loaded or didn't register a configuration 
> callback.
> [2016-02-07 04:50:13] logfile: invalid loglevel [debug] defaulting to 'info'
> [2016-02-07 04:50:14] python plugin: Error importing module "mongodb".
> [2016-02-07 04:50:14] Unhandled python exception in importing module: 
> ImportError: No module named mongodb
> [2016-02-07 04:50:14] python plugin: Found a configuration for the "mongodb" 
> plugin, but the plugin isn't loaded or didn't register a configuration 
> callback.
> [2016-02-07 04:50:14] logfile: invalid loglevel [debug] defaulting to 'info'
> [2016-02-07 04:50:14] python plugin: Error importing module "mongodb".
> [2016-02-07 04:50:14] Unhandled python exception in importing module: 
> ImportError: No module named mongodb
> [2016-02-07 04:50:14] python plugin: Found a configuration for the "mongodb" 
> plugin, but the plugin isn't loaded or didn't register a configuration 
> callback.
> [2016-02-07 04:50:14] Initialization complete, entering read-loop.
> ^C
> [root@cisco_aci_dev184 ~]# ls -la /var/lib/collectd/mongodb.py
> -rwxr-xr-x. 1 root root 5408 Feb  5 08:48 /var/lib/collectd/mongodb.py
> [root@cisco_aci_dev184 ~]# python /var/lib/collectd/mongodb.py
> Traceback (most recent call last):
>   File "/var/lib/collectd/mongodb.py", line 5, in <module>
>     import collectd
> ImportError: No module named collectd
> 
> Thanks in advance for any hints about the problem.
> 
> Best Regards,
> Pawel
> 
> From: Nils Steinger <nrg_colle...@voidptr.de>
> Sent: Saturday, February 6, 2016 5:13 PM
> To: Pawel Akonom; collectd@verplant.org
> Subject: Re: [collectd] problem with importing collectd python module
> 
> Hi Pawel,
> 
> are you loading the plugin from collectd's config file as described in
> its documentation [1]?
> Python scripts importing the collectd module are meant to be run by a
> Python interpreter included in collectd (by loading and configuring the
> "Python" plugin in collectd.conf) to avoid the overhead of running
> multiple Python interpreters. Running those scripts manually from the
> commandline won't work.
> To add to the confusion, there's also a Python wrapper around collectd's
> Unix socket interface, but that one isn't used here.
> 
> Regards,
> Nils
> 
> [1]: https://github.com/sebest/collectd-mongodb#configuration
> 
> On 06.02.2016 14:54, Pawel Akonom wrote:
>> Hi,
>>
>> The problem is with collectd python module - python script can't load it. It 
>> can't find it in default python modules path. Is collectd python module 
>> included in collectd source code? If so please write with file it is because 
>> I couldn't find it. If it's not included in collectd source code from where 
>> can I get it? In collectd python plugin documentation there is example with 
>> "import collectd" which is loading collectd python module.
>>
>> Br,
>> Pawel
>> ________________________________________
>> From: Joshua J. Kugler <jos...@azariah.com>
>> Sent: Saturday, February 6, 2016 1:13 AM
>> To: collectd@verplant.org
>> Cc: Pawel Akonom; Derek Palma
>> Subject: Re: [collectd] problem with importing collectd python module
>>
>> On Friday, February 05, 2016 19:39:50 Pawel Akonom wrote:
>>> The first line of mongodb.py plugin is:
>>>
>>>
>>> "import collectd" and the plugin can't load it. When I run python shell and
>>> try to import collectd manually I get:
>>>
>>>
>>> [root@cisco_aci_dev184 ~]# python
>>> Python 2.6.6 (r266:84292, Feb 22 2013, 00:00:18)
>>> [GCC 4.4.7 20120313 (Red Hat 4.4.7-3)] on linux2
>>> Type "help", "copyright", "credits" or "license" for more information.
>>>
>>>>>> import collectd
>>>
>>> Traceback (most recent call last):
>>>   File "<stdin>", line 1, in <module>
>>> ImportError: No module named collectd
>>
>> Can you clarify what you mean by "the plugin can't load it?" Do you can an
>> error? Or is the Python plugin not finding the mongodb.py plugin?
>>
>> Per the wiki page here: https://collectd.org/wiki/index.php/Plugin:Python you
>> will need to provide a path to the module you're trying load.  Can you post
>> your collectd config?
>>
>> j
>>
>> --
>> Joshua J. Kugler - Fairbanks, Alaska
>> Azariah Enterprises - Programming and Website Design
>> jos...@azariah.com - Jabber: pedah...@gmail.com
>> PGP Key: http://pgp.mit.edu/  ID 0x73B13B6A
>>
>> _______________________________________________
>> collectd mailing list
>> collectd@verplant.org
>> http://mailman.verplant.org/listinfo/collectd
>>
> 
> 
> 

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