I'm trying to deploy a Django application to Elastic Beanstalk. When I visit the page it never loads. The logs say:
Script timed out before returning headers: wsgi.py
I can ssh into the server and run manage.py runserver
and then curl 127.0.0.1:8000
from another terminal, which will return the page successfully. So I'm assuming it must be an issue with the Apache configuration that is set up as a part of Elastic Beanstalk.
Here is more of the logs:
[pid 15880] AH01232: suEXEC mechanism enabled (wrapper: /usr/sbin/suexec)
[so:warn] [pid 15880] AH01574: module wsgi_module is already loaded, skipping
[auth_digest:notice] [pid 15880] AH01757: generating secret for digest authentication ...
[lbmethod_heartbeat:notice] [pid 15880] AH02282: No slotmem from mod_heartmonitor
[mpm_prefork:notice] [pid 15880] AH00163: Apache/2.4.9 (Amazon) mod_wsgi/3.4 Python/2.7.5 configured -- resuming normal operations
[core:notice] [pid 15880] AH00094: Command line: '/usr/sbin/httpd -D FOREGROUND'
[:error] [pid 15881] /opt/python/run/venv/lib/python2.7/site-packages/numpy/oldnumeric/__init__.py:11: ModuleDeprecationWarning: The oldnumeric module will be dropped in Numpy 1.9
[:error] [pid 15881] warnings.warn(_msg, ModuleDeprecationWarning)
[:error] [pid 15881]
[core:error] [pid 15884] [client 10.248.110.45:58996] Script timed out before returning headers: wsgi.py
And my wsgi.py file:
import os
os.environ.setdefault("DJANGO_SETTINGS_MODULE", "aurora.settings")
from django.core.wsgi import get_wsgi_application
application = get_wsgi_application()
Any clues as to what could be causing this?
UPDATE:
I rebuilt my environment and ran into this issue again. I updated /etc/httpd/conf.d/wsgi.conf
to include WSGIApplicationGroup %{GLOBAL}
as mentioned here. I am using Scipy, Numpy, and GeoDjango (which uses GDAL). I know GDAL is not entirely thread safe and I'm not sure about the others but I'm assuming it was a thread safety issue.
Just my 2 cents on a similar issue I faced.
I had a similar problem. It turned out to be that the script (which makes a DB insert/update/delete call) being executed from django application was waiting in a deadlock state for the lock on the table to be released. Once it was released, the code went through without this error. I never had to re-deploy my EB application.
It certainly does seem like an issue with WSGI and Apache like you mentioned. One thing to double check is the .ebextensions file in your source directory.
There should be a config in there that specifies the WSGI information like the location of the application. You might also want to check your Django settings and run it locally with an Apache setup using WSGI.
You've probably already read the official documentation for WSGI and Django, but this might catch some simplistic things that you might have missed: http://docs.aws.amazon.com/elasticbeanstalk/latest/dg/create_deploy_Python_django.html#create_deploy_Python_django_update
UPDATE 8 FEB 2017
Previously my
wsgi.conf
was only using one process:WSGIDaemonProcess wsgi processes=1 threads=15 display-name=%{GROUP}
I upped the processes to something more reasonable and haven't had any issues:
WSGIDaemonProcess wsgi processes=6 threads=15 display-name=%{GROUP}
This change along with the original addition of
WSGIApplicationGroup %{GLOBAL}
seems to have done the trick.UPDATE 17 September 2015
I'm still occasionally running in to this issue. Usually, redeploying via
eb deploy
fixes the issue. It's hard to say what the underlying issue is.Original Answer
I eventually got the project working but then tried creating an image to use for new instances, which reopened the problem. I'm not sure why it worked then stopped working but I rebuilt my custom AMI from scratch and then repushed my project. Turns out it was an issue in
wsgi.py
. The version I posted was actually the different from what was being deployed. For some reason another developer had put this inwsgi.py
:I removed this and it fixed the problem.
My advice for anyone having
is to check you wsgi.py file.
The fix for us was to add the
WSGIApplicationGroup %{GLOBAL}
setting as per Meistro's answer.You'll want to ensure you edit your
wsgi
config by way of your.ebextensions/foobar.config
file, so that the changes are permanent. See the .ebextensions config docs.Add the following to your
.ebextensions/foobar.config
file:This will create (or overwrite) the contents of the
/etc/httpd/conf.d/wsgi_custom.conf
file withWSGIApplicationGroup %{GLOBAL}
I have tried above steps which can solve issue temporally. then I have done bellow steps:
make "packages.config" file under ".ebextensions " folder and put following lines
WSGIApplicationGroup: command: grep -rnw 'WSGIApplicationGroup' config.py || sed -i.bak '/LogFormat/ a WSGIApplicationGroup %%{GLOBAL}' config.py cwd: /opt/elasticbeanstalk/hooks
thanks for helps to made this who given suggestion for this type of error
I finally fixed. just read about apache mpm load module concept
I was changed the default load mode from apache preforker(my case) module which is depends on os.
find below location
location :
/etc/httpd/conf.module.d/00-mpm*.
Enable worker module which depends our cases
LoadModule mpm_worker_module lib64/httpd/modules/mod_mpm_worker.so
once again thanks for who helped me.