If you are using daemon mode, at global scope in the Apache configuration set:
WSGIRestrictEmbedded On
This will turn off initialisation of Python interpreter in Apache child
processes.
You don't need them since using daemon mode. It will save on some memory and
startup time for the worker processes, and should get rid of these messages for
when the Apache child worker processes get restarted due to server scaling
events. Daemon processes are not scaled dynamically and so should stay running
unless restarted due to events like request timeouts, or whole server restart
due to log file rotation etc.
After you have set that, if still see the messages, then would need to
investigate why daemon processes are restarting.
> On 13 Jun 2020, at 12:44 am, Daniel Haude <[email protected]> wrote:
>
> On Thursday, June 11, 2020 at 9:07:15 AM UTC+2, Graham Dumpleton wrote:
> Ensure you are using LogLevel of info for Apache and not err or warn. You
> will only see stack traces in info level output.
>
> Thanks for the tip, I did that. So far no timeouts, but loads and loads of
> stuff like below. Is that normal? Hundreds of hundreds of interpreter
> sgutdown / restarts. Were do all those processe s come from? "ps" only shows
> two WSGI processes with un-changing PIDs.
>
>
> [Fri Jun 12 16:39:08.000146 2020] [wsgi:info] [pid 8459] mod_wsgi (pid=8459):
> Destroying interpreters.
> [Fri Jun 12 16:39:08.000182 2020] [wsgi:info] [pid 8459] mod_wsgi (pid=8459):
> Cleanup interpreter ''.
> [Fri Jun 12 16:39:08.008493 2020] [wsgi:info] [pid 8459] mod_wsgi (pid=8459):
> Terminating Python.
> [Fri Jun 12 16:39:08.014036 2020] [wsgi:info] [pid 8459] mod_wsgi (pid=8459):
> Python has shutdown.
> [Fri Jun 12 16:39:10.006916 2020] [wsgi:info] [pid 5055] mod_wsgi (pid=5055):
> Destroying interpreters.
> [Fri Jun 12 16:39:10.006942 2020] [wsgi:info] [pid 5055] mod_wsgi (pid=5055):
> Cleanup interpreter ''.
> [Fri Jun 12 16:39:10.014463 2020] [wsgi:info] [pid 5055] mod_wsgi (pid=5055):
> Terminating Python.
> [Fri Jun 12 16:39:10.019861 2020] [wsgi:info] [pid 5055] mod_wsgi (pid=5055):
> Python has shutdown.
> [Fri Jun 12 16:39:52.085182 2020] [wsgi:info] [pid 8759] mod_wsgi (pid=8759):
> Initializing Python.
> [Fri Jun 12 16:39:52.104435 2020] [wsgi:info] [pid 8759] mod_wsgi (pid=8759):
> Attach interpreter ''.
> [Fri Jun 12 16:39:52.119136 2020] [wsgi:info] [pid 8759] mod_wsgi (pid=8759):
> Imported 'mod_wsgi'.
> [Fri Jun 12 16:40:10.136108 2020] [wsgi:info] [pid 8083] mod_wsgi (pid=8083):
> Destroying interpreters.
>
>
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