Hi Graham,
i followed as you suggested, compiled openssl from source and compiled python 3.7.5 with option (-./configure --with-openssl=/usr/src/openssl-1.0.2o --enable-optimizations --enable-shared). Then make -> make install. then Install mod_wsgi by activating virtualenv usinf (pip install mod_wsgi) and copy module to apache/modules directory. I change the LogLevel in apache conf to *info.* When i hit the URL *example.com :* i see below error in *error_log* of apache : [notice] child pid 74569 exit signal Segmentation fault (11) [info] mod_wsgi *(pid=74569)*: Process 'app' has died, deregister and restart it. [info] mod_wsgi (pid=74569): Process 'app' terminated by signal 11 [info] mod_wsgi (pid=74569): Process 'app' has been deregistered and will no longer be monitored. [info] mod_wsgi (pid=74625): Starting process 'app' with uid=630, gid=48 and threads=15. [info] mod_wsgi (pid=74625): Python home /home/abc/workspace/test_env. [info] mod_wsgi (pid=74625): Initializing Python. [notice] child pid 74625 exit signal Segmentation fault (11) [info] mod_wsgi (*pid=74625*): Process 'app' has died, deregister and restart it. [info] mod_wsgi (pid=74625): Process 'app' terminated by signal 11 [info] mod_wsgi (pid=74625): Process 'app' has been deregistered and will no longer be monitored. [info] mod_wsgi (pid=74654): Starting process 'app' with uid=630, gid=48 and threads=15. [info] mod_wsgi (pid=74654): Python home /home/abc/workspace/test_env. [info] mod_wsgi (pid=74654): Initializing Python. *project_error.log configured in virtual host file:* [Fri Feb 26 01:16:41 2021] [info] Initial (No.1) HTTPS request received for child 68 (server example.com:443) [Fri Feb 26 01:16:41 2021] [error] SYS PATH - ['/home/abc/workspace', '/home/abc/workspace/project', '/usr/local/lib/python37.zip', '/usr/local/lib/python3.7', '/usr/local/lib/python3.7/lib-dynload', '/home/abc/workspace/test_env/lib/python3.7/site-packages'] [Fri Feb 26 01:16:42 2021] [error] [client 116.xx.xxx.xxx] Truncated or oversized response headers received from daemon process 'app': /home/abc/workspace/project/core/wsgi.py, referer: https://example.com [Fri Feb 26 01:16:42 2021] [debug] ssl_engine_kernel.c(1894): OpenSSL: Write: SSL negotiation finished successfully [Fri Feb 26 01:16:42 2021] [info] [client 116.73.52.163] Connection closed to child 68 with standard shutdown (server example.com:443) [Fri Feb 26 01:16:42 2021] [info] mod_wsgi (pid=75016): Attach interpreter ''. [Fri Feb 26 01:16:42 2021] [info] mod_wsgi (pid=75016): Adding '/home/abc/workspace' to path. [Fri Feb 26 01:16:42 2021] [info] mod_wsgi (pid=75016): Adding '/home/abc/workspace/project' to path. [Fri Feb 26 01:16:42 2021] [info] mod_wsgi (pid=75016): Imported 'mod_wsgi'. [Fri Feb 26 01:16:42 2021] [debug] src/server/mod_wsgi.c(9115): mod_wsgi (pid=75016): Started thread 0 in daemon process 'app'. [Fri Feb 26 01:16:42 2021] [debug] src/server/mod_wsgi.c(9115): mod_wsgi (pid=75016): Started thread 2 in daemon process 'app'. [Fri Feb 26 01:16:42 2021] [debug] src/server/mod_wsgi.c(9115): mod_wsgi (pid=75016): Started thread 1 in daemon process 'app'. [Fri Feb 26 01:16:42 2021] [debug] src/server/mod_wsgi.c(9115): mod_wsgi (pid=75016): Started thread 4 in daemon process 'app'. [Fri Feb 26 01:16:42 2021] [debug] src/server/mod_wsgi.c(9115): mod_wsgi (pid=75016): Started thread 3 in daemon process 'app'. [Fri Feb 26 01:16:42 2021] [debug] src/server/mod_wsgi.c(9115): mod_wsgi (pid=75016): Started thread 6 in daemon process 'app'. [Fri Feb 26 01:16:42 2021] [debug] src/server/mod_wsgi.c(9115): mod_wsgi (pid=75016): Started thread 5 in daemon process 'app'. [Fri Feb 26 01:16:42 2021] [debug] src/server/mod_wsgi.c(9115): mod_wsgi (pid=75016): Started thread 7 in daemon process 'app'. [Fri Feb 26 01:16:42 2021] [debug] src/server/mod_wsgi.c(9115): mod_wsgi (pid=75016): Started thread 8 in daemon process 'app'. [Fri Feb 26 01:16:42 2021] [debug] src/server/mod_wsgi.c(9115): mod_wsgi (pid=75016): Started thread 10 in daemon process 'app'. [Fri Feb 26 01:16:42 2021] [debug] src/server/mod_wsgi.c(9115): mod_wsgi (pid=75016): Started thread 9 in daemon process 'app'. [Fri Feb 26 01:16:42 2021] [debug] src/server/mod_wsgi.c(9115): mod_wsgi (pid=75016): Started thread 13 in daemon process 'app'. [Fri Feb 26 01:16:42 2021] [debug] src/server/mod_wsgi.c(9115): mod_wsgi (pid=75016): Started thread 11 in daemon process 'app'. [Fri Feb 26 01:16:42 2021] [debug] src/server/mod_wsgi.c(9115): mod_wsgi (pid=75016): Started thread 12 in daemon process 'app'. [Fri Feb 26 01:16:42 2021] [debug] src/server/mod_wsgi.c(9115): mod_wsgi ( *pid=75016*): Started thread 14 in daemon process 'app'. Same repeat for another pid = 74989 As you can see in both *error_log and project_error,* in both same error appear twice , even when i have mentioned only one process to be run inside WSGIDaemonProcess *WSGIDaemonProcess app user=xx group=yy processes=1 threads=15 python-path=.. python-home=..* Please help here , can not understand whats the error here. Thanks Suyash On Monday, February 15, 2021 at 6:05:07 AM UTC+5:30 Graham Dumpleton wrote: > > On 12 Feb 2021, at 8:36 pm, Suyash Jain <sj...@tenplustwo.com> wrote: > > Hi Graham > > I checked with your mention points from prev mail: > > *Check1* > *You need to make sure you have uninstalled system package for mod_wsgi > and that Apache is using correct mod_wsgi.* > > there is no system package for mod_wsgi installed and Apache is using > correct mod_wsgi > > *Check2* > *Can you disable mod_ssl in Apache and see if the issue goes away:* > > apache uses mod_ssl for SSL cert and version is *OpenSSL 1.0.2r 26 Feb > 2019* > Python which i complied has openssl version of *OpenSSL 1.0.2r 26 Feb > 2019' * > Since they are same, but still i will check once with mod_ssl disable. > > *Check3* > I check apache error logs too, it mentions: > > [notice] child pid 116566 exit signal Segmentation fault (11) > > *Also i have few question , it will be great you can answer them:* > Q1. If we configure mod_wsgi daemon process inside Virtual host file like > i have mention in first mail. Do we need to start explicitly the django > server as like : > *python manage.py runserver * , along with apache running the wsgi > configured vhost file. > > > No you don't. Using 'python manage.py runserver' starts a complete > separate WSGI server only really usable for local development. It is not > needed when using mod_wsgi. > > Q2. Does centOS 6.9 has some compatible issue which doesnt allow mod_wsgi > = 4.7,1 and python (custom build) = 3.7.5 to configure with apache. > Should we use centOS 7/8 versions for the same? > > Q3. Also do we need to mention *WSGIRestrictEmbedded On * outside of > VirtualHost in main apache conf file ? > > > Since you are using daemon mode, it is recommended to add that directive. > > As to the crash, can you try with mod_wsgi source code from develop branch > of GitHub. If using pip use: > > pip install -U --no-cache-dir > https://github.com/GrahamDumpleton/mod_wsgi/archive/develop.zip > > More details of using pip based version in: > > https://pypi.org/project/mod-wsgi/ > > It has a change to address an issue which has been causing process crashes > when Python deprecation warnings have been turned on for everything. > > Graham > > Thanks > Suyash > > On Thursday, February 11, 2021 at 4:36:02 PM UTC+5:30 Graham Dumpleton > wrote: > >> At a guess the problem is that when you are compiling your custom Python >> then that Python isn't compiled with the same OpenSSL libraries that Apache >> uses. The version compatibility can cause it to crash. Can you disable >> mod_ssl in Apache and see if the issue goes away. If it does, that will >> confirm that is the issue. >> >> Graham >> >> On 11 Feb 2021, at 9:53 pm, Suyash Jain <sj...@tenplustwo.com> wrote: >> >> logs from >> >> [Wed Feb 03 04:19:37 2021] [info] [client 116.xx.xxx.xxx] Connection to >> child 1 established (server example.com:443) >> [Wed Feb 03 04:19:37 2021] [info] Seeding PRNG with 144 bytes of entropy >> [Wed Feb 03 04:19:37 2021] [debug] ssl_engine_kernel.c(1876): OpenSSL: >> Handshake: start >> [Wed Feb 03 04:19:37 2021] [debug] ssl_engine_kernel.c(1884): OpenSSL: >> Loop: before/accept initialization. >> . >> . >> ssl_engine_io and OPENSSL calls >> . >> . >> [Wed Feb 03 04:19:37 2021] [debug] ssl_engine_kernel.c(1884): OpenSSL: >> Loop: SSLv3 read finished A >> [Wed Feb 03 04:19:37 2021] [debug] ssl_engine_kernel.c(1884): OpenSSL: >> Loop: SSLv3 write session ticket A >> [Wed Feb 03 04:19:37 2021] [debug] ssl_engine_kernel.c(1884): OpenSSL: >> Loop: SSLv3 write change cipher spec A >> [Wed Feb 03 04:19:37 2021] [debug] ssl_engine_kernel.c(1884): OpenSSL: >> Loop: SSLv3 write finished A >> [Wed Feb 03 04:19:37 2021] [debug] ssl_engine_kernel.c(1884): OpenSSL: >> Loop: SSLv3 flush data >> [Wed Feb 03 04:19:37 2021] [debug] ssl_engine_kernel.c(1880): OpenSSL: >> Handshake: done >> [Wed Feb 03 04:19:37 2021] [info] Connection: Client IP: 116.xx.xxx.xxx, >> Protocol: TLSv1.2, Cipher: xxxxxx (128/128 bits) >> [Wed Feb 03 04:19:39 2021] [error] [client 116.xx.xxx.xxx] Truncated or >> oversized response headers received from daemon process 'appproject': >> /home/abc/workspace/project/core/wsgi.py >> [Wed Feb 03 04:19:39 2021] [debug] ssl_engine_kernel.c(1894): OpenSSL: >> Write: SSL negotiation finished successfully >> [Wed Feb 03 04:19:39 2021] [info] [client 116.xx.xxx.xxx] Connection >> closed to child 1 with standard shutdown (server example.com:443) >> [Wed Feb 03 04:19:39 2021] [info] mod_wsgi (pid=114381): Attach >> interpreter ''. >> [Wed Feb 03 04:19:39 2021] [info] mod_wsgi (pid=114381): Adding >> '/home/abc/workspace' to path. >> [Wed Feb 03 04:19:39 2021] [info] mod_wsgi (pid=114381): Adding >> '/home/abc/workspace/project' to path. >> [Wed Feb 03 04:19:39 2021] [info] mod_wsgi (pid=114381): Adding >> '/home/abc/.pyenv/versions/test1_env/lib/python3.7/site-packages' to path. >> [Wed Feb 03 04:19:39 2021] [info] mod_wsgi (pid=114381): Imported >> 'mod_wsgi'. >> [Wed Feb 03 04:19:39 2021] [debug] src/server/mod_wsgi.c(9115): mod_wsgi >> (pid=114381): Started thread 0 in daemon process 'appproject'. >> [Wed Feb 03 04:19:39 2021] [debug] src/server/mod_wsgi.c(9115): mod_wsgi >> (pid=114381): Started thread 1 in daemon process 'appproject'. >> [Wed Feb 03 04:19:39 2021] [debug] src/server/mod_wsgi.c(9115): mod_wsgi >> (pid=114381): Started thread 3 in daemon process 'appproject'. >> [Wed Feb 03 04:19:39 2021] [debug] src/server/mod_wsgi.c(9115): mod_wsgi >> (pid=114381): Started thread 2 in daemon process 'appproject'. >> [Wed Feb 03 04:19:39 2021] [debug] src/server/mod_wsgi.c(9115): mod_wsgi >> (pid=114381): Started thread 5 in daemon process 'appproject'. >> [Wed Feb 03 04:19:39 2021] [debug] src/server/mod_wsgi.c(9115): mod_wsgi >> (pid=114381): Started thread 4 in daemon process 'appproject'. >> [Wed Feb 03 04:19:39 2021] [debug] src/server/mod_wsgi.c(9115): mod_wsgi >> (pid=114381): Started thread 6 in daemon process 'appproject'. >> [Wed Feb 03 04:19:39 2021] [debug] src/server/mod_wsgi.c(9115): mod_wsgi >> (pid=114381): Started thread 7 in daemon process 'appproject'. >> [Wed Feb 03 04:19:39 2021] [debug] src/server/mod_wsgi.c(9115): mod_wsgi >> (pid=114381): Started thread 9 in daemon process 'appproject'. >> [Wed Feb 03 04:19:39 2021] [debug] src/server/mod_wsgi.c(9115): mod_wsgi >> (pid=114381): Started thread 8 in daemon process 'appproject'. >> [Wed Feb 03 04:19:39 2021] [debug] src/server/mod_wsgi.c(9115): mod_wsgi >> (pid=114381): Started thread 10 in daemon process 'appproject'. >> [Wed Feb 03 04:19:39 2021] [debug] src/server/mod_wsgi.c(9115): mod_wsgi >> (pid=114381): Started thread 13 in daemon process 'appproject'. >> [Wed Feb 03 04:19:39 2021] [debug] src/server/mod_wsgi.c(9115): mod_wsgi >> (pid=114381): Started thread 11 in daemon process 'appproject'. >> [Wed Feb 03 04:19:39 2021] [debug] src/server/mod_wsgi.c(9115): mod_wsgi >> (pid=114381): Started thread 12 in daemon process 'appproject'. >> [Wed Feb 03 04:19:39 2021] [debug] src/server/mod_wsgi.c(9115): mod_wsgi >> (pid=114381): Started thread 14 in daemon process 'appproject'. >> [Wed Feb 03 04:19:55 2021] [debug] ssl_engine_io.c(1930): OpenSSL: read >> 5/5 bytes from BIO#xxxxxxx [mem: xxxxxxx] (BIO dump follows) >> >> >> >> On Thursday, February 11, 2021 at 3:58:56 PM UTC+5:30 Graham Dumpleton >> wrote: >> >>> Sorry, my memory is bad here and it is likely nothing to do with that. >>> It is more likely because the application process crashes. You didn't >>> provide sufficient log messages from before the error message to confirm >>> that, so please provide log messages form before and after. You can also >>> look in the main Apache error log message and see if there was a >>> "Segmentation fault" message. >>> >>> >>> On 11 Feb 2021, at 9:19 pm, Graham Dumpleton <graham.d...@gmail.com> >>> wrote: >>> >>> Your are responding with a set of HTTP headers which exceed the typical >>> maximum Apache header size. You can override the default when using daemon >>> mode of mod_wsgi by using the 'header-buffer-size' option to >>> WSGIDaemonProcess. See: >>> >>> * >>> https://modwsgi.readthedocs.io/en/master/configuration-directives/WSGIDaemonProcess.html >>> >>> Graham >>> >>> On 11 Feb 2021, at 7:48 pm, Suyash Jain <sj...@tenplustwo.com> wrote: >>> >>> Hi, >>> >>> I am facing error Truncated or oversized response headers received from >>> daemon process when configured apache + mod_wsgi + django >>> >>> System python is 2.6.6 and I needed Python 3.7.5 >>> So i installed python using below cmds (with enable shared option) >>> wget https://www.python.org/ftp/python/3.7.5/Python-3.7.5.tgz >>> tar xzf Python-3.7.5.tgz >>> cd Python-3.7.5 > >>> ./configure --enable-optimizations --enable-shared >>> >>> Then complied mpd_wsgi with virtualenv created from installed python >>> 3.7.5 ie test1_env using pyenv virtualenv >>> >>> yum install httpd-devel (apxs) >>> git clone https://github.com/GrahamDumpleton/mod_wsgi.git >>> ./configure --with-apxs=/usr/sbin/apxs >>> --with-python=/home/abc/.pyenv/versions/test1_env/bin/python3 >>> make >>> >>> >>> System details : >>> CentOS release 6.9 (Final) >>> >>> Server version: Apache/2.2.15 (Unix) >>> Architecture: 64-bit >>> Server MPM: Prefork >>> threaded: no >>> forked: yes (variable process count) >>> >>> Insallted Package details inside test1_env virtual env >>> python - 3.7.5 >>> Django 3.1.2 >>> mod_wsgi 4.7.1 >>> pyenv virtualenv used ie test1_env >>> >>> >>> Error logs: >>> >>> Truncated or oversized response headers received from daemon process >>> 'appproject': /home/abc/workspace/project/core/wsgi.py >>> [info] mod_wsgi (pid=124460): Attach interpreter ''. >>> [info] mod_wsgi (pid=124460): Adding '/home/abc/workspace' to path. >>> [info] mod_wsgi (pid=124460): Adding '/home/abc/workspace/project' to >>> path. >>> [info] mod_wsgi (pid=124460): Adding >>> '/home/abc/.pyenv/versions/test1_env/lib/python3.7/site-packages' to path. >>> [info] mod_wsgi (pid=124460): Imported 'mod_wsgi'. >>> >>> >>> The WSGI portion of the configuration for the vhost in Apache looks like >>> this >>> >>> ServerAdmin xx...@yyy.com >>> ServerName example.com >>> DocumentRoot /home/abc/workspace/project >>> >>> Alias /static /home/abc/workspace/project/static/ >>> <Directory "/home/abc/workspace/project/static/"> >>> Allow from all >>> </Directory> >>> >>> LogLevel info >>> ErrorLog logs/project_error.log >>> CustomLog logs/project_access.log combined >>> >>> >>> WSGIDaemonProcess appproject user=xx group=yy processes=2 >>> threads=15 >>> python-path=/home/abc/.pyenv/versions/test1_env/lib/python3.7/site-packages:/home/abc/workspace:/home/abc/workspace/project >>> >>> python-home=/home/abc/.pyenv/versions/test1_env display-name='appproject' >>> WSGIProcessGroup appproject >>> WSGIApplicationGroup %{GLOBAL} >>> WSGIScriptAlias / /home/abc/workspace/project/core/wsgi.py >>> >>> <Directory /home/abc/workspace/project/core> >>> <Files wsgi.py> >>> Order allow,deny >>> Allow from all >>> </Files> >>> </Directory> >>> </VirtualHost> >>> >>> Please provide solution for above issue. >>> >>> Thanks >>> Suyash >>> >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "modwsgi" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to modwsgi+u...@googlegroups.com. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/modwsgi/7eca331a-d0d1-4582-a5dd-e8bb74f9d9f8n%40googlegroups.com >>> >>> <https://groups.google.com/d/msgid/modwsgi/7eca331a-d0d1-4582-a5dd-e8bb74f9d9f8n%40googlegroups.com?utm_medium=email&utm_source=footer> >>> . >>> >>> >>> >>> >> -- >> You received this message because you are subscribed to the Google Groups >> "modwsgi" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to modwsgi+u...@googlegroups.com. >> >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/modwsgi/ef2f6054-b50c-41f3-b9f7-9c853e29c608n%40googlegroups.com >> >> <https://groups.google.com/d/msgid/modwsgi/ef2f6054-b50c-41f3-b9f7-9c853e29c608n%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> >> >> > -- > You received this message because you are subscribed to the Google Groups > "modwsgi" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to modwsgi+u...@googlegroups.com. > > To view this discussion on the web visit > https://groups.google.com/d/msgid/modwsgi/bb95febc-8aa9-4e44-98a9-5c66f8bc1a56n%40googlegroups.com > > <https://groups.google.com/d/msgid/modwsgi/bb95febc-8aa9-4e44-98a9-5c66f8bc1a56n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > > -- You received this message because you are subscribed to the Google Groups "modwsgi" group. 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