Django中的Python代码未使用Apache / mod_wsgi在守护程序模式下重新编译

Question

我在守护程序模式下使用带有mod_wsgi的Apache2运行Django应用程序：

WSGIApplicationGroup %{GLOBAL}

WSGIDaemonProcess my_app_process
WSGIScriptAlias /my_app /var/www/my_app/wsgi.py process-group=my_app_process
WSGIScriptReloading On

每当我在服务器上更改我的Python代码时（我强烈建议不要这样做，但我仅将其用于调试），我一直在重新编译代码时遇到麻烦，但只能在子目录中进行。

可以很好地重新编译应用程序根目录（即settings.py）中的Python文件，而不是位于子目录（即某些应用程序的views.py）中的Python文件。

应用程序目录归www-data用户所有，并且该用户具有足够的特权（已通过777测试）。

重新启动Apache或触摸wsgi文件只会导致重新编译应用程序根目录中的Python文件。

编辑：

我还尝试添加WSGIProcessGroup指令，但无效：

WSGIApplicationGroup %{GLOBAL}

WSGIDaemonProcess my_app_process processes=2 threads=15
WSGIProcessGroup my_app_process
WSGIScriptAlias /my_app /var/www/my_app/wsgi.py
WSGIScriptReloading On

另外，使用这里提供的代码，我得出的结论是，我实际上是在守护程序模式下运行。

编辑＃2

从重新启动添加了Apache日志：

[Fri Jan 06 12:03:06.309060 2017] [wsgi:warn] [pid 28372:tid 139790316758912] mod_wsgi: Compiled for Python/2.7.8.
[Fri Jan 06 12:03:06.309186 2017] [wsgi:warn] [pid 28372:tid 139790316758912] mod_wsgi: Runtime using Python/2.7.9.
[Fri Jan 06 12:03:06.309876 2017] [wsgi:info] [pid 28375:tid 139790316758912] mod_wsgi (pid=28375): Starting process 'my_app' with uid=33, gid=33 and threads=15.
[Fri Jan 06 12:03:06.310193 2017] [wsgi:info] [pid 28375:tid 139790316758912] mod_wsgi (pid=28375): Initializing Python.
[Fri Jan 06 12:03:06.310246 2017] [wsgi:info] [pid 28376:tid 139790316758912] mod_wsgi (pid=28376): Starting process 'my_app_2' with uid=33, gid=33 and threads=15.
[Fri Jan 06 12:03:06.310531 2017] [wsgi:info] [pid 28377:tid 139790316758912] mod_wsgi (pid=28377): Starting process 'my_app_3' with uid=33, gid=33 and threads=15.
[Fri Jan 06 12:03:06.310607 2017] [wsgi:info] [pid 28376:tid 139790316758912] mod_wsgi (pid=28376): Initializing Python.
[Fri Jan 06 12:03:06.310855 2017] [wsgi:info] [pid 28377:tid 139790316758912] mod_wsgi (pid=28377): Initializing Python.
[Fri Jan 06 12:03:06.311029 2017] [mpm_event:notice] [pid 28372:tid 139790316758912] AH00489: Apache/2.4.10 (Debian) mod_wsgi/4.3.0 Python/2.7.9 configured -- resuming normal operations
[Fri Jan 06 12:03:06.311057 2017] [mpm_event:info] [pid 28372:tid 139790316758912] AH00490: Server built: Sep 15 2016 20:44:43
[Fri Jan 06 12:03:06.311071 2017] [core:notice] [pid 28372:tid 139790316758912] AH00094: Command line: '/usr/sbin/apache2'
[Fri Jan 06 12:03:06.311379 2017] [wsgi:info] [pid 28379:tid 139790316758912] mod_wsgi (pid=28379): Initializing Python.
[Fri Jan 06 12:03:06.311507 2017] [wsgi:info] [pid 28378:tid 139790316758912] mod_wsgi (pid=28378): Initializing Python.
[Fri Jan 06 12:03:06.324667 2017] [wsgi:info] [pid 28377:tid 139790316758912] mod_wsgi (pid=28377): Attach interpreter ''.
[Fri Jan 06 12:03:06.324671 2017] [wsgi:info] [pid 28376:tid 139790316758912] mod_wsgi (pid=28376): Attach interpreter ''.
[Fri Jan 06 12:03:06.324843 2017] [wsgi:info] [pid 28377:tid 139790316758912] mod_wsgi (pid=28377): Adding '/var/anaconda2/lib/python2.7/site-packages' to path.
[Fri Jan 06 12:03:06.324864 2017] [wsgi:info] [pid 28376:tid 139790316758912] mod_wsgi (pid=28376): Adding '/var/anaconda2/lib/python2.7/site-packages' to path.
[Fri Jan 06 12:03:06.324988 2017] [wsgi:info] [pid 28378:tid 139790316758912] mod_wsgi (pid=28378): Attach interpreter ''.
[Fri Jan 06 12:03:06.329741 2017] [wsgi:info] [pid 28379:tid 139790316758912] mod_wsgi (pid=28379): Attach interpreter ''.
[Fri Jan 06 12:03:06.335879 2017] [wsgi:info] [pid 28375:tid 139790316758912] mod_wsgi (pid=28375): Attach interpreter ''.
[Fri Jan 06 12:03:06.336042 2017] [wsgi:info] [pid 28375:tid 139790316758912] mod_wsgi (pid=28375): Adding '/var/anaconda2/lib/python2.7/site-packages' to path.
[Fri Jan 06 12:03:13.598083 2017] [wsgi:info] [pid 28375:tid 139790204262144] [remote 10.6.6.58:512] mod_wsgi (pid=28375, process='my_app', application=''): Loading WSGI script '/var/www/my_app/wsgi.py'.

通过触摸WSGI脚本添加了Apache日志：

[Fri Jan 06 12:12:28.348075 2017] [wsgi:info] [pid 28835:tid 139790316758912] mod_wsgi (pid=28835): Shutdown requested 'my_app'.
[Fri Jan 06 12:12:28.348217 2017] [wsgi:info] [pid 28835:tid 139790316758912] mod_wsgi (pid=28835): Stopping process 'my_app'.
[Fri Jan 06 12:12:28.348237 2017] [wsgi:info] [pid 28835:tid 139790316758912] mod_wsgi (pid=28835): Destroying interpreters.
[Fri Jan 06 12:12:28.348244 2017] [wsgi:info] [pid 28835:tid 139790316758912] mod_wsgi (pid=28835): Cleanup interpreter ''.
[Fri Jan 06 12:12:28.348954 2017] [wsgi:info] [pid 28835:tid 139790316758912] mod_wsgi (pid=28835): Terminating Python.
[Fri Jan 06 12:12:28.469333 2017] [wsgi:info] [pid 28835:tid 139790316758912] mod_wsgi (pid=28835): Python has shutdown.
[Fri Jan 06 12:12:28.469366 2017] [wsgi:info] [pid 28835:tid 139790316758912] mod_wsgi (pid=28835): Exiting process 'my_app'.
[Fri Jan 06 12:12:29.129042 2017] [wsgi:info] [pid 28372:tid 139790316758912] mod_wsgi (pid=28835): Process 'my_app' has died, deregister and restart it.
[Fri Jan 06 12:12:29.129094 2017] [wsgi:info] [pid 28372:tid 139790316758912] mod_wsgi (pid=28835): Process 'my_app' terminated normally, exit code 0
[Fri Jan 06 12:12:29.129099 2017] [wsgi:info] [pid 28372:tid 139790316758912] mod_wsgi (pid=28835): Process 'my_app' has been deregistered and will no longer be monitored.
[Fri Jan 06 12:12:29.129764 2017] [wsgi:info] [pid 28917:tid 139790316758912] mod_wsgi (pid=28917): Starting process 'my_app' with uid=33, gid=33 and threads=15.
[Fri Jan 06 12:12:29.130173 2017] [wsgi:info] [pid 28917:tid 139790316758912] mod_wsgi (pid=28917): Initializing Python.
[Fri Jan 06 12:12:29.144492 2017] [wsgi:info] [pid 28917:tid 139790316758912] mod_wsgi (pid=28917): Attach interpreter ''.
[Fri Jan 06 12:12:29.144687 2017] [wsgi:info] [pid 28917:tid 139790316758912] mod_wsgi (pid=28917): Adding '/var/anaconda2/lib/python2.7/site-packages' to path.
[Fri Jan 06 12:12:29.147279 2017] [wsgi:info] [pid 28917:tid 139790204262144] [remote 10.6.6.58:512] mod_wsgi (pid=28917, process='my_app', application=''): Loading WSGI script '/var/www/my_app/wsgi.py'.

Answer 1

好像您缺少WSGIProcessGroup指令：

https://modwsgi.readthedocs.io/en/develop/user-guides/quick-configuration-guide.html#delegation-to-daemon-process

要对特定站点中托管的WSGI应用程序使用守护程序模式，则需要定义WSGIDaemonProcess和WSGIProcessGroup指令。 例如，要设置一个包含两个多线程进程的守护进程组，可以使用：WSGIDaemonProcess example.com process = 2线程= 15 WSGIProcessGroup example.com

话虽这么说，除非您需要调试的问题是特定于您的部署配置的，否则您最好在本地使用内置开发服务器进行工作

Answer 2

您可能会偶然发现由于错误地以嵌入式模式运行而导致的更改，这可能意味着如果使用prefork MPM，则新流程会得到请求。

除了正确设置嵌入式模式（首选）之外，还可以在以下位置阅读有关重新加载源代码的文档：

• 在mod_wsgi中重新加载源代码