Thanks :-)
On Tuesday, November 29, 2016 at 6:43:44 PM UTC-6, Graham Dumpleton wrote:
>
> Try adding the directive:
>
> WSGIApplicationGroup %{GLOBAL}
>
> after the WSGIProcessGroup line.
>
> There are known issues with various third party Python packages with C
> extension components that mean they will not work with Python sub
> interpreters properly. That directive forces the application to run in the
> main interpreter context. Such modules are then happy.
>
> Symptoms of this being the problem are deadlocking code, or processes
> crashing. Docs mention it in:
>
>
> http://modwsgi.readthedocs.io/en/develop/user-guides/application-issues.html#python-simplified-gil-state-api
>
> Also be aware that mod_wsgi version 3.4 is ridiculously out of date.
> Something like 5+ years old and over 30 versions behind. :-)
>
> Graham
>
> On 30 Nov 2016, at 11:21 AM, Clay Templeton <[email protected]
> <javascript:>> wrote:
>
> Hello, hoping very dearly that someone might solve this mystery for me.
> This is a new issue that crept into a working codebase while I wasn't
> looking. Issue: Apache hangs for several minutes then sends 'Internal
> Server Error' message. Error log shows 'End of script output before
> headers: wsgi.py'. Details follow:
>
>
> Error Message sent to browser looks like this:
> Internal Server Error
>
> The server encountered an internal error or misconfiguration and was
> unable to complete your request.
>
> Please contact the server administrator at root@localhost to inform them
> of the time this error occurred, and the actions you performed just before
> this error.
>
> More information about this error may be available in the server error log.
>
> Main Apache error log looks like this:
>
> [Tue Nov 29 23:44:17.038082 2016] [core:notice] [pid 8164] SELinux policy
> enabled; httpd running as context system_u:system_r:httpd_t:s0
> [Tue Nov 29 23:44:17.038701 2016] [suexec:notice] [pid 8164] AH01232:
> suEXEC mechanism enabled (wrapper: /usr/sbin/suexec)
> AH00558: httpd: Could not reliably determine the server's fully qualified
> domain name, using localhost.localdomain. Set the 'ServerName' directive
> globally to suppress this message
> [Tue Nov 29 23:44:17.050318 2016] [auth_digest:notice] [pid 8164] AH01757:
> generating secret for digest authentication ...
> [Tue Nov 29 23:44:17.051277 2016] [lbmethod_heartbeat:notice] [pid 8164]
> AH02282: No slotmem from mod_heartmonitor
> [Tue Nov 29 23:44:17.054149 2016] [mpm_prefork:notice] [pid 8164] AH00163:
> Apache/2.4.6 (CentOS) mod_wsgi/3.4 Python/2.7.5 configured -- resuming
> normal operations
> [Tue Nov 29 23:44:17.054181 2016] [core:notice] [pid 8164] AH00094:
> Command line: '/usr/sbin/httpd -D FOREGROUND'
>
>
> Virtual host error log looks like this:
>
> [Tue Nov 29 23:49:52.583315 2016] [:info] [pid 8224] mod_wsgi (pid=8224):
> Attach interpreter ''.
> [Tue Nov 29 23:49:52.583471 2016] [:info] [pid 8224] mod_wsgi (pid=8224):
> Adding '/var/www/ims_web' to path.
> [Tue Nov 29 23:49:52.583626 2016] [:info] [pid 8224] mod_wsgi (pid=8224):
> Adding '/var/www/anaconda2/envs/ims_web/lib/python2.7/site-packages' to
> path.
> [Tue Nov 29 23:50:13.060200 2016] [authz_core:debug] [pid 8227]
> mod_authz_core.c(809): [client 10.0.2.2:36474] AH01626: authorization
> result of Require all granted: granted
> [Tue Nov 29 23:50:13.060236 2016] [authz_core:debug] [pid 8227]
> mod_authz_core.c(809): [client 10.0.2.2:36474] AH01626: authorization
> result of <RequireAny>: granted
> [Tue Nov 29 23:50:13.060451 2016] [authz_core:debug] [pid 8227]
> mod_authz_core.c(809): [client 10.0.2.2:36474] AH01626: authorization
> result of Require all granted: granted
> [Tue Nov 29 23:50:13.060465 2016] [authz_core:debug] [pid 8227]
> mod_authz_core.c(809): [client 10.0.2.2:36474] AH01626: authorization
> result of <RequireAny>: granted
> [Tue Nov 29 23:50:13.071420 2016] [:info] [pid 8224] mod_wsgi (pid=8224):
> Create interpreter 'localhost.localdomain:8080|/services'.
> [Tue Nov 29 23:50:13.072845 2016] [:info] [pid 8224] mod_wsgi (pid=8224):
> Adding '/var/www/ims_web' to path.
> [Tue Nov 29 23:50:13.072970 2016] [:info] [pid 8224] mod_wsgi (pid=8224):
> Adding '/var/www/anaconda2/envs/ims_web/lib/python2.7/site-packages' to
> path.
> [Tue Nov 29 23:50:13.073484 2016] [:info] [pid 8224] [remote 10.0.2.2:168]
> mod_wsgi (pid=8224, process='main',
> application='localhost.localdomain:8080|/services'): Loading WSGI script
> '/var/www/ims_web/ims_web/wsgi.py'.
> [Tue Nov 29 23:55:13.648316 2016] [:info] [pid 8224] mod_wsgi (pid=8224):
> Daemon process deadlock timer expired, stopping process 'main'.
> [Tue Nov 29 23:55:13.648461 2016] [:info] [pid 8224] mod_wsgi (pid=8224):
> Shutdown requested 'main'.
> [Tue Nov 29 23:55:18.648793 2016] [:info] [pid 8224] mod_wsgi (pid=8224):
> Aborting process 'main'.
> [Tue Nov 29 23:55:18.656494 2016] [core:error] [pid 8227] [client
> 10.0.2.2:36474] End of script output before headers: wsgi.py
> [Tue Nov 29 23:55:19.296001 2016] [:info] [pid 8264] mod_wsgi (pid=8264):
> Attach interpreter ''.
> [Tue Nov 29 23:55:19.296134 2016] [:info] [pid 8264] mod_wsgi (pid=8264):
> Adding '/var/www/ims_web' to path.
> [Tue Nov 29 23:55:19.296370 2016] [:info] [pid 8264] mod_wsgi (pid=8264):
> Adding '/var/www/anaconda2/envs/ims_web/lib/python2.7/site-packages' to
> path.
>
>
> Main httpd.conf file is as out-of-the-box, except LogLevel has been
> changed to 'debug'. Custom .conf file looks like this:
>
> <VirtualHost *:80>
> Header set Access-Control-Allow-Origin "*"
> DocumentRoot /var/www/html/
> Alias /media /var/www/data
> Alias /static /var/www/static
> WSGIDaemonProcess main
> python-path=/var/www/ims_web:/var/www/anaconda2/envs/ims_web/lib/python2.7/site-packages
> WSGIProcessGroup main
> WSGIScriptAlias /services /var/www/ims_web/ims_web/wsgi.py
> ErrorLog /var/www/log/error_log
> LogLevel debug
>
> <Directory /var/www/ims_web/static>
> Require all granted
> </Directory>
>
> <Directory /var/www/ims_web/ims_web>
> <Files wsgi.py>
> Require all granted
> </Files>
> </Directory>
>
> </VirtualHost>
>
>
> wsgi.py looks like this:
>
> import os
>
> from django.core.wsgi import get_wsgi_application
>
> os.environ.setdefault("DJANGO_SETTINGS_MODULE", "ims_web.settings.production")
>
> application = get_wsgi_application()
>
>
> Many Thanks
>
> Clay
>
>
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