Default lang/locale should be UTF-8, not ASCII. about s2i-python-container HOT 7 CLOSED

Solution is that also need to set environment variable:

PYTHONIOENCODING=UTF-8

This is as well as LANG and LC_ALL.

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I have written a blog about this problem before:

• http://blog.dscpl.com.au/2014/09/setting-lang-and-lcall-when-using.html

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Hmmm, Gunicorn seems to fail to do the right thing even when these environment variables are set.

-- GLOBAL --
('en_US', 'UTF-8')
UTF-8
------------
-- REQUEST --
('en_US', 'UTF-8')
UTF-8
------------
[2016-12-06 20:20:30,923] ERROR in app: Exception on / [GET]
Traceback (most recent call last):
  File "/opt/app-root/src/.local/lib/python2.7/site-packages/flask/app.py", line 1988, in wsgi_app
    response = self.full_dispatch_request()
  File "/opt/app-root/src/.local/lib/python2.7/site-packages/flask/app.py", line 1641, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/opt/app-root/src/.local/lib/python2.7/site-packages/flask/app.py", line 1544, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/opt/app-root/src/.local/lib/python2.7/site-packages/flask/app.py", line 1639, in full_dispatch_request
    rv = self.dispatch_request()
  File "/opt/app-root/src/.local/lib/python2.7/site-packages/flask/app.py", line 1625, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/opt/app-root/src/wsgi.py", line 13, in hello
    print(u'\u292e')
UnicodeEncodeError: 'ascii' codec can't encode character u'\u292e' in position 0: ordinal not in range(128)

Additionally setting LC_LANG doesn't help.

Spin up python on the command line and works okay where as didn't before environment variables set. When I have run Python 3.5 app.py with aiohttpd application before problem was solved by environment variables. So Gunicorn is doing something nasty with its fiddling with stdout or stderr or need to provide other options to gunicorn when run is executing it.

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This problem is only occurring with gunicorn when it is run from the run script triggered on container start. If you get an interactive shell using oc rsh and in that run gunicorn against a wsgi.py file which prints out a problematic string on import it works fine. Similarly, if use oc debug and run run manually, works fine.

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This goes beyond gunicorn and seems to be an issue in general with Python 2.7 in a container where when not associated with a tty/interactive shell, default encoding doesn't get applied to stdout and stderr.

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Closed via #167

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for supervisor + gunicorn, can be config as below.

# other program config

[program:gunicorn]
command = gunicorn wsgi  --bind 0.0.0.0:8000 --log-level error ...
environment = LANG=en_US.UTF-8,LC_ALL=en_US.UTF-8,PYTHONIOENCODING=UTF-8

#other program config

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