Amazon + Django each 12 hours appears that [Errno 5] Input/output error

[Bernardo Garcia]

I recently setup and deploy an Amazon EC2 instance for deploy my django project.

I  was interacting with my application via browser when I get this error in the browser:

errno 5 input/output error django 

This error did reference to some function of my application, but in my console the server require restart and when I did this, the error was solved of a magic way ..

I've search this error and I found this ticket reported https://code.djangoproject.com/ticket/23284

This report is very similar to my error ...

Although I don't know if this error back inside 12 hours, I restart my server and this was solved and now all it's work O.K.

When one bug is declared as invalid in Django

What does it mean? 

There is some problem with EC2 infraestructure with Django (I don't think so) or the problem is more for my application side?

Thanks

[Bernardo Garcia]

This is my error, which again I get despite that yesterday was solved restarting my server

This error did reference to some function of my application

Environment:

Request Method: GET
Request URL: http://localhost:8000/accounts/profile/

Django Version: 1.9
Python Version: 3.4.3
Installed Applications:
['django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'crispy_forms',
 'django_extensions',
 'storages',
 'userprofile']
Installed Middleware:
['django.middleware.security.SecurityMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware']



Traceback:

File "/home/ubuntu/.virtualenvs/nrb_dev/lib/python3.4/site-packages/django/core/handlers/base.py" in get_response
  149.                     response = self.process_exception_by_middleware(e, request)

File "/home/ubuntu/.virtualenvs/nrb_dev/lib/python3.4/site-packages/django/core/handlers/base.py" in get_response
  147.                     response = wrapped_callback(request, *callback_args, **callback_kwargs)

File "/home/ubuntu/.virtualenvs/nrb_dev/lib/python3.4/site-packages/django/views/generic/base.py" in view
  68.             return self.dispatch(request, *args, **kwargs)

File "/home/ubuntu/.virtualenvs/nrb_dev/lib/python3.4/site-packages/django/utils/decorators.py" in _wrapper
  67.             return bound_func(*args, **kwargs)

File "/home/ubuntu/.virtualenvs/nrb_dev/lib/python3.4/site-packages/django/contrib/auth/decorators.py" in _wrapped_view
  23.                 return view_func(request, *args, **kwargs)

File "/home/ubuntu/.virtualenvs/nrb_dev/lib/python3.4/site-packages/django/utils/decorators.py" in bound_func
  63.                 return func.__get__(self, type(self))(*args2, **kwargs2)

File "/home/ubuntu/workspace/neurorehabilitation-system/userprofile/mixins.py" in dispatch
  7.         return super(LoginRequiredMixin, self).dispatch(request, *args, **kwargs)

File "/home/ubuntu/.virtualenvs/nrb_dev/lib/python3.4/site-packages/django/views/generic/base.py" in dispatch
  88.         return handler(request, *args, **kwargs)

File "/home/ubuntu/.virtualenvs/nrb_dev/lib/python3.4/site-packages/django/views/generic/base.py" in get
  157.         context = self.get_context_data(**kwargs)

File "/home/ubuntu/workspace/neurorehabilitation-system/userprofile/views.py" in get_context_data
  50.             print (user.is_physiotherapist)

Exception Type: OSError at /accounts/profile/
Exception Value: [Errno 5] Input/output error

At the end in the line 50 is referenced a get_context_data() function which is inside of a class based view that inherit of TemplateView CBV

but in my console the server require restart and when I did this, the error was solved of a magic way ..

In addition I had this error yesterday, I restart my server, and today I have again the error.

There is some problem with EC2 infraestructure with Django (I don't think so) or the problem is more for my application side?

I don't think so that the function get_context_data() of my application be the problem ...

[Luis Zárate]

Are you deploy your EC2 django instance in debug mode ?

For me this the reference for deploy http://michal.karzynski.pl/blog/2013/06/09/django-nginx-gunicorn-virtualenv-supervisor/.

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[Bernardo Garcia]

Hi, luisza14

You have the reason, I had my project in DEBUG=True in production, and the main problem was a print sentence in some of my CBV's in the code in production

Here, recently I can write how to fix this http://stackoverflow.com/questions/34643170/amazon-django-each-12-hours-appears-that-errno-5-input-output-error/34667148#34667148

using also the reference that you provide me.

Thanks so much

:)