Hello all,

I'm not sure if you  discovered the problem, but if you have different 
types of authentication backends, maybe the problem is on the session 
objects. Did you do a delete?.
See the NOTE in this chapter: 
https://docs.djangoproject.com/en/1.6/topics/auth/customizing/#specifying-authentication-backends

Hope it helps


El dimecres 4 de juny de 2014 6:55:38 UTC-5, Juergen Schackmann va escriure:
>
> Hi all, 
> this question refers to this previous question: 
> https://groups.google.com/forum/#!topic/django-users/8IXEvfU72S4. 
> However, it seems like the problem is slightly different, I decided to open 
> a new question:
>
> After my site has been up and running for a while in production, I 
> suddenly have a problem with my users loging into it.
>
>    1. I have protected certain views/pages with the login_required 
>    decorator and I am also using the django admin.
>    2. When an anonymous user hits any of these pages, he is redirected to 
>    the login page.
>    3. When this anonymous user adds its credentials, the POST request is 
>    successful and he is redirected to the inital page. At the same time, the 
>    user gets a new sessionid (as expected)
>    4. However, now the results get very unreliable. When pressing reload 
>    or when navigating to other pages (that require a login), either of the 2 
>    outcomes might happen:
>
>
>    - a) The user is identified and the page is displayed correctly
>    - b) The user is redirect to the login page.
>
> I have checked the content of the session via the shell, and nothing is 
> changing there.
>
> The production site is served via a load balancer and 8 application 
> servers. Even stranger: if I test the same code (with the same settings) on 
> a test server, that is not load balanced and basically has not traffic, 
> everything is working fine.
>
> I am running Django 1.6 on Ubuntu with Apache and mod_wsgi in daemon mode 
> behind SSL and I am using the Session database backend. I am using 
> django-allauth.account for account management/login. My Session settings 
> are like this:
>
> SESSION_COOKIE_HTTPONLY = True
> SESSION_COOKIE_AGE = 60*60*24
> SESSION_COOKIE_SECURE = True
>
> So I have the following questions/ideas?
>
> 1. Can this be related to loadbalancing in anyway? My understanding was 
> that Django does not need sticky sessions, when the DB session backend is 
> used.
>
> 2. Can this be related to a threading issue?
>
> 3. Can this be related to high load?
>
> 4. Can this be related to a decoding issue: 
> https://github.com/django/django/blob/master/django/contrib/sessions/backends/base.py#L83.
>  
> However, I have not found any log entries that refer to "Session data 
> corrupted".
>
> Any other hints are welcome.
>
>
>

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