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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