Python home in log should not say /use/bin/python. That is very wrong. That 
would suggest you have a rouge WSGIPythonHome directive in your Apache config 
somewhere. Can you check.

Graham

On 16/07/2012, at 10:25 AM, Alan Kesselmann <[email protected]> wrote:

> 
> 
> On Monday, July 16, 2012 5:19:41 PM UTC+3, Graham Dumpleton wrote:
> Lets summarise where believe things are up to. 
> 
> You have mod_wsgi.so correctly linking in the libpython2.6.so for your 
> own Python installation. 
> 
>  This must be mistake (should probably say libpython2.7.so ) because both of 
> the python installations are 2.7. System python was/is 2.7.2 and new 
> installation is 2.7.3.
> 
> Your virtual environment is constructed using your Python installation. 
> correct 
> 
> You believe you have removed mod_python from your Apache. 
>  
> i have ran sudo aptitude purge libapache2-mod-python.
> 
> libapache2-mod-wsgi which was installed for initial python still remains.
> 
> 
> Even though mod_python is not loaded, WSGIPythonHome seems to be 
> getting ignored. 
> 
> This is resulting in system wide Python system .py files to be used on 
> startup. 
> 
> The specific OS you are using doesn't use standard Python code base. 
> Instead they hack it to allow them to have parallel Python standard 
> and debug binaries. Part of this is that they hack the compiled in sys 
> module to have a pydebug flag. The system wide .py files are looking 
> for that flag, but because the libpython2.7.so that is being used is 
> actually from your installation it doesn't have it and fails. 
> 
> this went completely over my head :) 
> 
> Things to do: 
> 
> 1. Please verify this again using: 
> 
>   httpd -M 
> 
> Hmm no such command for ubuntu... googled around and found that apache2ctl 
> command should work the same magic:
> 
> root@alan:/home/alan# apache2ctl -M
> apache2: Could not reliably determine the server's fully qualified domain 
> name, using 127.0.1.1 for ServerName
> Loaded Modules:
>  core_module (static)
>  log_config_module (static)
>  logio_module (static)
>  mpm_prefork_module (static)
>  http_module (static)
>  so_module (static)
>  alias_module (shared)
>  auth_basic_module (shared)
>  authn_file_module (shared)
>  authz_default_module (shared)
>  authz_groupfile_module (shared)
>  authz_host_module (shared)
>  authz_user_module (shared)
>  autoindex_module (shared)
>  cgi_module (shared)
>  dav_module (shared)
>  dav_fs_module (shared)
>  deflate_module (shared)
>  dir_module (shared)
>  env_module (shared)
>  include_module (shared)
>  mime_module (shared)
>  negotiation_module (shared)
>  php5_module (shared)
>  reqtimeout_module (shared)
>  rewrite_module (shared)
>  ruby_module (shared)
>  setenvif_module (shared)
>  ssl_module (shared)
>  status_module (shared)
>  suexec_module (shared)
>  wsgi_module (shared)
> Syntax OK
> root@alan:/home/alan# 
> 
> 
>  
> 
> or by looking at the 'pldd' equivalent that mod_python is not being 
> loaded, as this prevents WSGIPythonHome from working. 
> 
> 2. Set LogLevel to 'debug' in Apache at global scope so that mod_wsgi 
> logs extra details. This extra detail should include when it is 
> overriding Python home based on WSGIPythonHome. 
>  
> Changed. i get more/different stuff in error.log now. Spam like this:
> 
> [Mon Jul 16 20:14:10 2012] [info] mod_wsgi (pid=5052): Process 'pin' has 
> died, restarting.
> [Mon Jul 16 20:14:10 2012] [info] mod_wsgi (pid=5056): Starting process 'pin' 
> with uid=1000, gid=1000 and threads=1.
> [Mon Jul 16 20:14:10 2012] [info] mod_wsgi (pid=5056): Python home 
> /usr/bin/python.
> [Mon Jul 16 20:14:10 2012] [info] mod_wsgi (pid=5056): Initializing Python.
> [Mon Jul 16 20:14:10 2012] [info] mod_wsgi (pid=5053): Process 'pin' has 
> died, restarting.
> [Mon Jul 16 20:14:10 2012] [info] mod_wsgi (pid=5054): Process 'pin' has 
> died, restarting.
> [Mon Jul 16 20:14:10 2012] [info] mod_wsgi (pid=5059): Starting process 'pin' 
> with uid=1000, gid=1000 and threads=1.
> [Mon Jul 16 20:14:10 2012] [info] mod_wsgi (pid=5058): Starting process 'pin' 
> with uid=1000, gid=1000 and threads=1.
> ImportError: No module named site
> [Mon Jul 16 20:14:10 2012] [info] mod_wsgi (pid=5059): Python home 
> /usr/bin/python.
> [Mon Jul 16 20:14:10 2012] [info] mod_wsgi (pid=5058): Python home 
> /usr/bin/python.
> [Mon Jul 16 20:14:10 2012] [info] mod_wsgi (pid=5059): Initializing Python.
> [Mon Jul 16 20:14:10 2012] [info] mod_wsgi (pid=5058): Initializing Python.
> ImportError: No module named site
> [Mon Jul 16 20:14:10 2012] [info] mod_wsgi (pid=5057): Starting process 'pin' 
> with uid=1000, gid=1000 and threads=1.
> ImportError: No module named site
> ImportError: No module named site
> [Mon Jul 16 20:14:10 2012] [info] mod_wsgi (pid=5057): Python home 
> /usr/bin/python.
> [Mon Jul 16 20:14:10 2012] [info] mod_wsgi (pid=5057): Initializing Python.
> ImportError: No module named site
> 
> 
> 3. Try and set the environment variable: 
> 
> PYTHONVERBOSE=1 
> export PYTHONVERBOSE 
> 
> in the 'envvars' file for Apache, or if that doesn't exist in same 
> directory as 'httpd' binary, use the init.d startup scripts to set it. 
> 
> This will result in Python logging lots of details about where it is 
> importing stuff from on startup. 
> 
> Even more spam in error.log now:
> root@alan:/etc/apache2# cat /var/log/apache2/error.log | tail -100
> import zipimport # builtin
> # installed zipimport hook
> ImportError: No module named site
> # clear __builtin__._
> # clear sys.path
> # clear sys.argv
> # clear sys.ps1
> # clear sys.ps2
> # clear sys.exitfunc
> # clear sys.exc_type
> # clear sys.exc_value
> # clear sys.exc_traceback
> # clear sys.last_type
> # clear sys.last_value
> # clear sys.last_traceback
> # clear sys.path_hooks
> # clear sys.path_importer_cache
> # clear sys.meta_path
> # clear sys.flags
> # clear sys.float_info
> # restore sys.stdin
> # restore sys.stdout
> # restore sys.stderr
> # cleanup __main__
> # cleanup[1] zipimport
> # cleanup[1] signal
> # cleanup[1] exceptions
> # cleanup[1] _warnings
> # cleanup sys
> # cleanup __builtin__
> # cleanup ints: 5 unfreed ints
> # cleanup floats
> [Mon Jul 16 20:19:31 2012] [info] mod_wsgi (pid=7728): Python home 
> /usr/bin/python.
> [Mon Jul 16 20:19:31 2012] [info] mod_wsgi (pid=7728): Initializing Python.
> # installing zipimport hook
> import zipimport # builtin
> # installed zipimport hook
> ImportError: No module named site
> # clear __builtin__._
> # clear sys.path
> # clear sys.argv
> # clear sys.ps1
> # clear sys.ps2
> # clear sys.exitfunc
> # clear sys.exc_type
> # clear sys.exc_value
> # clear sys.exc_traceback
> # clear sys.last_type
> # clear sys.last_value
> # clear sys.last_traceback
> # clear sys.path_hooks
> # clear sys.path_importer_cache
> # clear sys.meta_path
> # clear sys.flags
> # clear sys.float_info
> # restore sys.stdin
> # restore sys.stdout
> # restore sys.stderr
> # cleanup __main__
> # cleanup[1] zipimport
> # cleanup[1] signal
> # cleanup[1] exceptions
> # cleanup[1] _warnings
> # cleanup sys
> # cleanup __builtin__
> # cleanup ints: 5 unfreed ints
> # cleanup floats
> # installing zipimport hook
> import zipimport # builtin
> # installed zipimport hook
> ImportError: No module named site
> # clear __builtin__._
> # clear sys.path
> # clear sys.argv
> # clear sys.ps1
> # clear sys.ps2
> # clear sys.exitfunc
> # clear sys.exc_type
> # clear sys.exc_value
> # clear sys.exc_traceback
> # clear sys.last_type
> # clear sys.last_value
> # clear sys.last_traceback
> # clear sys.path_hooks
> # clear sys.path_importer_cache
> # clear sys.meta_path
> # clear sys.flags
> # clear sys.float_info
> # restore sys.stdin
> # restore sys.stdout
> # restore sys.stderr
> # cleanup __main__
> # cleanup[1] zipimport
> # cleanup[1] signal
> # cleanup[1] exceptions
> # cleanup[1] _warnings
> # cleanup sys
> # cleanup __builtin__
> # cleanup ints: 5 unfreed ints
> # cleanup floats
> root@alan:/etc/apache2# 
>  
> 
> Graham 
> alan 
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