Any ideas?
Thanks
On Friday, September 2, 2022 at 8:47:47 AM UTC-4 Juan Khawly wrote:
> Hello Graham,
>
> I'm going to try to address your questions:
>
> *Inside my Virtual Host*
>
> Alias /static /data/home/user/project/frontend/build/static
> <Directory /data/home/user/project/frontend/build/static>
> Require all granted
> </Directory>
>
> <Directory /data/home/user/project/my_project>
> <Files wsgi.py>
> Require all granted
> </Files>
> </Directory>
>
> WSGIScriptAlias / /data/home/user/project/my_project/wsgi.py
> WSGIDaemonProcess my_project python-path=/data/home/user/project
> python-home=/data/home/user/environment/venv
> WSGIProcessGroup my_project
>
>
> *Inside apache2.conf*
>
> WSGIApplicationGroup %{GLOBAL}
>
> *On the apache/error.log*
> When I get the 503 on the access.log, these are the types of errors seen
> on the error.log
>
> *One type of error*
> [Thu Sep 01 04:22:21.520772 2022] [wsgi:error] [pid 3267:tid
> 140518453380864] [client 118.126.82.157:37722] Timeout when reading
> response headers from daemon process 'my_project':
> /data/home/project/my_project/my_project/wsgi.py
>
> *Another type of error*
> [Thu Sep 01 04:27:00.053558 2022] [wsgi:error] [pid 3267:tid
> 140518595991296] (11)Resource temporarily unavailable: [client
> 172.31.17.102:31880] mod_wsgi (pid=3267): Unable to connect to WSGI
> daemon process ' my_project ' on '/var/run/apache2/wsgi.2385.1.1.sock'
> after multiple attempts as listener backlog limit was exceeded or the
> socket does not exist.
>
>
>
> Thanks,
> Juan Khawly
>
> On Thursday, September 1, 2022 at 5:54:43 PM UTC-4 Graham Dumpleton wrote:
>
>> Would need to see the mod_wsgi configuration you are using to configure
>> the WSGI application, including how WSGIDaemonProcess is configured and
>> whether you are using WSGIApplicationGroup. Also, what errors are in the
>> Apache error log when the 503 errors occur.
>>
>> On 2 Sep 2022, at 4:57 am, Juan Khawly <[email protected]> wrote:
>>
>> Hello,
>>
>> I've been running into this problem for a while.
>>
>> *CONTEXT *
>>
>> I have an application developed in python (3.10), django 4.0.3, using
>> mod_wsgi and apache. The application is in a DEV environment and hosted in
>> AWS EC2. Currently, it does not receive traffic at all.
>>
>> *Installation of Mod WSGI*
>> apt-get install -y apache2-dev
>>
>> *Setup out of the VENV*
>> mod_wsgi-express install-module
>>
>> editing: /etc/apache2/mods-available/wsgi.load
>>
>> LoadModule wsgi_module "/usr/lib/apache2/modules/
>> mod_wsgi-py310.cpython-310-x86_64-linux-gnu.so"
>> WSGIPythonHome "/data/home/user/environment/venv"
>>
>> *Module Enabled*
>> a2enmod wsgi
>>
>> *PROBLEM*
>>
>> The application works perfect most of the time. Couple of times a week,
>> without traffic the apache server goes down into 503. Usually it is
>> preceded by a random request but it does not always happen that way. I am
>> assuming that is Slow DDOS but I want to make sure it is not miss
>> configuration of the WSGI.
>>
>> access.log example
>>
>> <access.PNG>
>>
>> error.log example
>> I masked the internal routes
>>
>> *This is one of the errors:*
>> [Thu Sep 01 04:22:21.520772 2022] [wsgi:error] [pid 3267:tid
>> 140518453380864] [client 118.126.82.157:37722] Timeout when reading
>> response headers from daemon process 'XXXXX':
>> /XXX/XXXX/XXXXX/XXXXX/XXXXXX/wsgi.py
>>
>> *Another type of error:*
>> [Thu Sep 01 04:22:21.520772 2022] [wsgi:error] [pid 3267:tid
>> 140518453380864] [client 118.126.82.157:37722] Timeout when reading
>> response headers from daemon process 'XXXXXXX':
>> /XXX/XXXX/XXXXX/XXXXXX/XXXXXXX/wsgi.py
>>
>> *SOLUTION*
>>
>> If I restart the server, all works again until next failure.
>>
>> I've enabled the following modules, in case it is SlowDDOS
>> modreqtimeout
>> libapache2-mod-qos
>> libapache2-mod-security2.
>>
>> Any recommendation?
>>
>> Thanks,
>> Juan Khawly
>>
>>
>>
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>> <https://groups.google.com/d/msgid/modwsgi/3cc5285a-9943-4143-9b7f-5fa24e681c70n%40googlegroups.com?utm_medium=email&utm_source=footer>
>> .
>> <access.PNG>
>>
>>
>>
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