Numpy ImportError when deploying Flask App using mod_wsgi/Apache2 -


i'm trying flask app running on aws ec2 (standard ubuntu ami) through apache2 webserver. app internally uses numpy. have tested following:

  1. without numpy, app runs through apache2. numpy, trips on import numpy , throws 500 server error (see logs below).

  2. with numpy, app runs fine when invoked directly command line (i.e. python app.py). numpy bits work expected , can query app endpoints externally.

i printed system path (print sys.path) before import numpy np , made sure appropriate site-packages directory in path. manually specified wsgipythonpath include site-packages directory. tried setting number of threads 1 , editing apache2.conf file. none of these efforts have been successful.

below directory structure , contents of relevant files.

root folder /var/www/html/webserver_mockup

root folder contents

/var/www/html/webserver_mockup/app.wsgi /var/www/html/webserver_mockup/mockup/__init__.py /var/www/html/webserver_mockup/mockup/app.py

app.wsgi

(edited according graham's comment below)

#!/usr/bin/python import sys import site site.addsitedir('/home/ubuntu/.local/lib/python2.7/site-packages') sys.path.insert(0, "/var/www/html/webserver_mockup")  mockup.app import app application

/etc/apache2/sites-available/000-default.conf

(edited according graham's comment below)

wsgipythonpath /usr/local/lib/python2.7/site-packages/  <virtualhost *:80>     serveradmin webmaster@localhost     documentroot /var/www/html      wsgidaemonprocess webserver_mockup threads=5     wsgiscriptalias / /var/www/html/webserver_mockup/app.wsgi      <directory />         wsgiprocessgroup %{global}         wsgiapplicationgroup %{global}         order allow,deny         allow     </directory>     loglevel warn     errorlog ${apache_log_dir}/error.log     customlog ${apache_log_dir}/access.log combined </virtualhost>

apache error log

[fri apr 07 04:09:41.062282 2017] [mpm_event:notice] [pid 7221:tid  140325391972224] ah00489: apache/2.4.18 (ubuntu) mod_wsgi/4.3.0  python/2.7.12 configured -- resuming normal operations [fri apr 07 04:09:41.062358 2017] [core:notice] [pid 7221:tid  140325391972224] ah00094: command line: '/usr/sbin/apache2' [fri apr 07 04:09:46.770159 2017] [wsgi:error] [pid 7225:tid  140325250004736] [client 24.6.50.183:58332] mod_wsgi (pid=7225): target  wsgi script '/var/www/html/webserver_mockup/app.wsgi' cannot  loaded python module. [fri apr 07 04:09:46.770300 2017] [wsgi:error] [pid 7225:tid  140325250004736] [client 24.6.50.183:58332] mod_wsgi (pid=7225):  exception occurred processing wsgi script  '/var/www/html/webserver_mockup/app.wsgi'. [fri apr 07 04:09:46.770370 2017] [wsgi:error] [pid 7225:tid   140325250004736] [client 24.6.50.183:58332] traceback (most recent  call last): [fri apr 07 04:09:46.770432 2017] [wsgi:error] [pid 7225:tid  140325250004736] [client 24.6.50.183:58332]   file  "/var/www/html/webserver_mockup/app.wsgi", line 7, in <module> [fri apr 07 04:09:46.770534 2017] [wsgi:error] [pid 7225:tid  140325250004736] [client 24.6.50.183:58332]     mockup.app import  app application [fri apr 07 04:09:46.770612 2017] [wsgi:error] [pid 7225:tid  140325250004736] [client 24.6.50.183:58332]   file  "/var/www/html/webserver_mockup/mockup/app.py", line 12, in  <module> [fri apr 07 04:09:46.770693 2017] [wsgi:error] [pid 7225:tid  140325250004736] [client 24.6.50.183:58332]     import numpy np [fri apr 07 04:09:46.770755 2017] [wsgi:error] [pid 7225:tid  140325250004736] [client 24.6.50.183:58332] importerror: no module  named numpy

my question is: why apache2 not finding numpy despite appropriate site-packages being in path?

this:

site.addsitedir('/home/ubuntu/.local/lib/python2.7/site-packages/numpy')

should have been:

site.addsitedir('/home/ubuntu/.local/lib/python2.7/site-packages')

but whole way setting python virtual environments not best practice anyway. suggest read:

also try , switch daemon mode, better use daemon mode embedded mode.


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