Django中的Python代碼未使用Apache / mod_wsgi在守護程序模式下重新編譯

Question

我在守護程序模式下使用帶有mod_wsgi的Apache2運行Django應用程序：

WSGIApplicationGroup %{GLOBAL}

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

每當我在服務器上更改我的Python代碼時（我強烈建議不要這樣做，但我僅將其用於調試），我一直在重新編譯代碼時遇到麻煩，但只能在子目錄中進行。

可以很好地重新編譯應用程序根目錄（即settings.py）中的Python文件，而不是位於子目錄（即某些應用程序的views.py）中的Python文件。

應用程序目錄歸www-data用戶所有，並且該用戶具有足夠的特權（已通過777測試）。

重新啟動Apache或觸摸wsgi文件只會導致重新編譯應用程序根目錄中的Python文件。

編輯：

我還嘗試添加WSGIProcessGroup指令，但無效：

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，使用這里提供的代碼，我得出的結論是，我實際上是在守護程序模式下運行。

編輯＃2

從重新啟動添加了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'.

通過觸摸WSGI腳本添加了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

要對特定站點中托管的WSGI應用程序使用守護程序模式，則需要定義WSGIDaemonProcess和WSGIProcessGroup指令。 例如，要設置一個包含兩個多線程進程的守護進程組，可以使用：WSGIDaemonProcess example.com process = 2線程= 15 WSGIProcessGroup example.com

話雖這么說，除非您需要調試的問題是特定於您的部署配置的，否則您最好在本地使用內置開發服務器進行工作

Answer 2

您可能會偶然發現由於錯誤地以嵌入式模式運行而導致的更改，這可能意味着如果使用prefork MPM，則新流程會得到請求。

除了正確設置嵌入式模式（首選）之外，還可以在以下位置閱讀有關重新加載源代碼的文檔：

• 在mod_wsgi中重新加載源代碼