Path: csiph.com!fu-berlin.de!uni-berlin.de!not-for-mail From: Robin Becker Newsgroups: comp.lang.python Subject: Re: debugging uwsgi Date: Fri, 8 Jan 2016 16:49:34 +0000 Lines: 33 Message-ID: References: <568FCFBB.2080403@chamonix.reportlab.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Trace: news.uni-berlin.de yDO+LJkbz87v+WNwoJEDWASffaCnjtLrwdJEOhek/erQ== Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: OK 0.000 X-Spam-Evidence: '*H*': 1.00; '*S*': 0.00; 'debug': 0.04; 'django.': 0.05; 'importerror:': 0.05; 'startup': 0.05; '40,': 0.09; 'name)': 0.09; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'bug': 0.10; 'python': 0.10; 'python.': 0.11; 'question.': 0.13; 'django': 0.13; '105,': 0.16; '33,': 0.16; '37,': 0.16; 'manage.py': 0.16; 'received:80.91.229.3': 0.16; 'received:io': 0.16; 'received:plane.gmane.org': 0.16; 'received:psf.io': 0.16; 'runserver': 0.16; 'wrote:': 0.16; 'basically': 0.18; 'skip:" 40': 0.20; 'seems': 0.23; '(most': 0.24; 'header:In-Reply-To:1': 0.24; 'module': 0.25; 'header:User-Agent:1': 0.26; 'command': 0.26; 'header:X-Complaints-To:1': 0.26; 'skip:" 20': 0.26; 'error': 0.27; 'skip:i 40': 0.27; 'preceding': 0.29; 'sensible': 0.29; "i'm": 0.30; 'compared': 0.30; 'error.': 0.31; 'guess': 0.31; 'skip:_ 10': 0.32; 'traceback': 0.33; 'file': 0.34; 'server': 0.34; 'something': 0.35; 'but': 0.36; 'project': 0.36; 'to:addr :python-list': 0.36; 'subject:: ': 0.37; 'received:org': 0.37; 'seem': 0.37; 'why': 0.39; 'sure': 0.39; 'to:addr:python.org': 0.40; 'still': 0.40; 'caused': 0.61; 'different': 0.63; 'unusual': 0.72; 'received:109': 0.75; 'trial': 0.81; 'discovered': 0.83; 'becker': 0.84 X-Injected-Via-Gmane: http://gmane.org/ X-Gmane-NNTP-Posting-Host: 109.174.168.73 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.5.0 In-Reply-To: <568FCFBB.2080403@chamonix.reportlab.co.uk> X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.20+ Precedence: list List-Id: General discussion list for the Python programming language List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Xref: csiph.com comp.lang.python:101387 On 08/01/2016 15:03, Robin Becker wrote: > I have an unusual bug in a large django project which has appeared when using > nginx + uwsgi + django. The configuration nginx + flup + django or the django > runserver don't seem to create the conditions for the error. > > Basically I am seeing an error > >> Traceback (most recent call last): >> File "./project/fundfacts/api.py", line 33, in refresh_data >> call_command('fe_data_load', month=period_id, datadir=upload_dir) >> File >> "/home/rptlab/website/quilter.reportlab.com/quilter_2/lib/python2.7/site-packages/django/core/management/__init__.py", >> line 105, in call_command >> command = load_command_class(app_name, name) >> File >> "/home/rptlab/website/quilter.reportlab.com/quilter_2/lib/python2.7/site-packages/django/core/management/__init__.py", >> line 40, in load_command_class >> module = import_module('%s.management.commands.%s' % (app_name, name)) >> File "/usr/lib/python2.7/importlib/__init__.py", line 37, in import_module >> __import__(name) >> ImportError: No module named fe_data_load .......... I discovered by trial and error that a preceding call_command had caused a chdir; that seems to have deleterious effects on the uwsgi process in question. I'm not sure why the flup server is superior, but I guess something must be different about the python startup used by uwsgi compared to python manage.py runfcgi. I'm still interested to find out any sensible way to debug uwsgi + python. -- Robin Becker