I'm trying to compile and run my C++ code on a web server (GoDaddy) using CGI. I've compiled my code on my PC that runs Linux Debian distro. However, every time that I try to run my code using my Internet browser, I get "500 Internal Server Error".
After asking the web server customer service, I found out that the error log is the following:
[Tue Jan 20 09:47:59.939859 2015] [cgi:error] [pid 29555:tid 140270383359744] [client 152.3.43.176:64059] AH01215: out.cgi: /usr/lib64/libstdc++.so.6: version `CXXABI_1.3.5' not found (required by out.cgi), referer: http://.com/tweet.html
[Tue Jan 20 09:47:59.939909 2015] [cgi:error] [pid 29555:tid 140270383359744] [client 152.3.43.176:64059] AH01215: out.cgi: /usr/lib64/libstdc++.so.6: version `GLIBCXX_3.4.14' not found (required by out.cgi), referer: http://.com/tweet.html
How should I compile my code to not get these errors?
Related
I have used flask app for straming video via raspberrypi camera. The code i used for flask app is here:
https://blog.miguelgrinberg.com/post/video-streaming-with-flask
In local server it is doing video stream but not on my website.
I am using apache2 server having wsgi file below:
flaskapp2.wsgi
#!/usr/bin/python
import sys
import logging
logging.basicConfig(stream=sys.stderr)
sys.path.insert(0,"/var/www/FlaskApp2/FlaskApp2")
from ashish import app as application
application.secret_key ='1233883'
The structure of file system is :
/var/www/FlaskApp2/
flskapp2.wsgi
FlaskApp2/
ashish.py
camera_pi.py
templates/index.html
The ashish.py is the flask app which is doing stream.
The error log file in apache is:
[Wed Nov 23 15:17:17.458803 2016] [mpm_prefork:notice] [pid 783] AH00163: Apache/2.4.10 (Raspbian) mod_wsgi/4.3.0 Python/2.7.9 configured -- resuming normal operations
[Wed Nov 23 15:17:17.459043 2016] [core:notice] [pid 783] AH00094: Command line: '/usr/sbin/apache2'
[Wed Nov 23 15:17:14.278353 2016] [wsgi:warn] [pid 662] mod_wsgi: Compiled for Python/2.7.8.
[Wed Nov 23 15:17:14.279359 2016] [wsgi:warn] [pid 662] mod_wsgi: Runtime using Python/2.7.9.
[Wed Nov 23 15:17:14.305871 2016] [mpm_prefork:notice] [pid 662] AH00163: Apache/2.4.10 (Raspbian) mod_wsgi/4.3.0 Python/2.7.9 configured -- resuming normal operations
[Wed Nov 23 15:17:14.306169 2016] [core:notice] [pid 662] AH00094: Command line: '/usr/sbin/apache2'
[Wed Nov 23 15:17:16.502484 2016] [wsgi:warn] [pid 670] mod_wsgi: Compiled for Python/2.7.8.
[Wed Nov 23 15:17:16.504897 2016] [wsgi:warn] [pid 670] mod_wsgi: Runtime using Python/2.7.9.
[Wed Nov 23 15:17:16.531217 2016] [mpm_prefork:notice] [pid 670] AH00163: Apache/2.4.10 (Raspbian) mod_wsgi/4.3.0 Python/2.7.9 configured -- resuming normal operations
[Wed Nov 23 15:17:16.531502 2016] [core:notice] [pid 670] AH00094: Command line: '/usr/sbin/apache2'
On localhost it is working but not on my website is there any mistake in wsgi file or i need to add something.
You have a few possible issues when getting a 404 Not Found.
If that VirtualHost is not the only one in the Apache configuration file, then it will never be used. This is because you have set ServerName incorrectly. The ServerName directory should be set to a host name. Not a URL, not an IP address. Thus using:
ServerName https://7a78657b7a.dataplicity.io
is incorrect. It should be:
ServerName 7a78657b7a.dataplicity.io
It has to be a host name as Apache relies on it for name base virtual host matching against the Host header in the request. If it is wrong, then Apache will not know which is the correct VirtualHost to use. When this occurs Apache will fall back to sending the requests to whatever was the first VirtualHost definition it found when reading the Apache configuration files. Thus if this is not the first VirtualHost definition, it will never be used. If there is no similar URL handler set up in the first VirtualHost, you will get a 404.
The second is your WSGI application entry point in the WSGI script file pointed at by the WSGIScriptAlias directive, is not called application you will get a 404. You do appear to have it being called application, so you should be fine on this point and it shouldn't be the issue. There would have been a distinctive error message in the Apache error logs of this was the issue anyway.
The third is that the URL path you are using doesn't map to a route in the Flask application. There are actually two part to this. Because you are mounting at a sub URL in Apache, the URL path must at least start with /flask2. With that value it means you need to have a route in your Flask application which matches the root of the site. Normally in Flask that would mean you have a route for #app.route('/') but am not sure whether that still works when you have mounted your Flask application at a sub URL in Apache. You don't show your route code, so can't see what you have. You might at least try instead using /flask2/ in the URL. If your video feed isn't at the root of the Flask application but a sub URL such as set up by #app.route('/video_feed') as given in the post you link, then you should be using /flask2/video_feed as URL path. If you don't use the correct URL you will get a 404.
My whole configuration of files were right but as i was running flask applications under apache server ,apache was not able to acess pi camera because it was not having root access to pi.so,on local server it was working but not on my website when it was running on apache.
I'm attempting to deploy my Pyramid Application on AWS via Elastic Beanstalk. The upload/deploy works fine but when I send a request to the application I'm met with the following error:
File "/opt/python/run/venv/lib/python3.4/site-packages/pkg_resources/__init__.py", line 839, in resolve
[Sat Jul 16 21:04:40.351021 2016] [:error] [pid 10837] [remote 76.202.70.172:28102] raise DistributionNotFound(req, requirers)
[Sat Jul 16 21:04:40.351110 2016] [:error] [pid 10837] [remote 76.202.70.172:28102] pkg_resources.DistributionNotFound: The 'MyAppName' distribution was not found and is required by the application
[Sat Jul 16 21:34:47.346311 2016] [:error] [pid 10837] [remote 76.202.70.172:28102] mod_wsgi (pid=10837): Target WSGI script '/opt/python/current/app/application.py' cannot be loaded as Python module.
...where "MyAppName" is the name of my application (aka the one I've developed and am attempting to use).
From what it looks like, my actual application is not installed during the app deployment. Typically, on a local machine, after developing the application you run:
pip install -e .
in order to install the actual application you are developing. I suppose my question, although it seems silly, is: How do I actually install the application I've written onto the ec2 instance during the upload/deploy process of Elastic Beanstalk? Is there something that should be included in requirements.txt to also install the application in which the requirements.txt exists? Is this done automatically? What am I missing here?
My Django WEB Application fails to launch all of a sudden and out of the blues.
It was working fine until yesterday in production.
I am not able to figure out where the problem is. It could apache or mod_wsgi or windows but at the moment I have no clue.
I have tried to reinstall all the python libraries/prerequisites etc. but the problem persists nevertheless.
I am serving the WEBApp at Apache Port 8999 and When I access the WEB App, the browser fails to show any error. It just keeps trying to open the page and in the status bar I just see the Waiting for message.
If I see the netstat results then I see the following
C:\Documents and Settings\admintemp>netstat -an | find "8999" TCP
0.0.0.0:8999 0.0.0.0:0 LISTENING TCP 172.18.148.156:8999 10.107.226.88:1826 ESTABLISHED
This connection remains established forever and nothing happens. Internet Browser just seems to try to keep opening the Web App and it appears as if it is waiting forever.
The only thing i see in Apache logs is this
[Fri Jun 21 18:34:32 2013] [warn] mod_wsgi: Compiled for Python/2.7.
[Fri Jun 21 18:34:32 2013] [warn] mod_wsgi: Runtime using Python/2.7.3.
[Fri Jun 21 18:34:32 2013] [notice] Apache/2.2.22 (Win32) mod_wsgi/3.3 Python/2.7.3 configured -- resuming normal operations
[Fri Jun 21 18:34:32 2013] [notice] Server built: Jan 28 2012 11:16:39
[Fri Jun 21 18:34:32 2013] [notice] Parent: Created child process 3876
[Fri Jun 21 18:34:32 2013] [warn] mod_wsgi: Compiled for Python/2.7.
[Fri Jun 21 18:34:32 2013] [warn] mod_wsgi: Runtime using Python/2.7.3.
[Fri Jun 21 18:34:32 2013] [notice] Child 3876: Child process is running
[Fri Jun 21 18:34:32 2013] [notice] Child 3876: Acquired the start mutex.
[Fri Jun 21 18:34:32 2013] [notice] Child 3876: Starting 64 worker threads.
[Fri Jun 21 18:34:32 2013] [notice] Child 3876: Starting thread to listen on port 8999.
[Fri Jun 21 18:34:43 2013] [error] C:/Program Files/App_Logic/logic_apps/logic_apps\\..\\logic_apps
I also noticed in the Windows Event Viewer logs (Application Logs) the following message but I am not sure how (and if) this could be related to my problem at hand. This message seems to shows up once for everytime i access the Web App.
Application popup: Microsoft Visual C++ Runtime Library : Runtime
Error!
Program: C:\Progr...
R6034 An application has made an attempt to load the C runtime library
incorrectly. Please contact the application's support team for more
information.
Exact screenshot of above error message is at http://imgur.com/hijiKv8
Please note that as part of my analysis I have tried
Accesing the apache page at http://127.0.0.1:8999 does show me the It Works ! message
Running the WEB App using the Django Development server and it launches fine.
Changing the wsgi.py file and when I introduce errors in the file deliberately, accessing the web app does complain with the relevant.
The application is installed on Windows Server 2003 SP1 and there are no automatic updates schedules on this machine so I am not suspecting that a update would have caused this problem. I also saw the Windows Update log and there was nothing installed recently.
The application is based on following Python Libraries as prerequisites
httpd-2.2.22-win32-x86-openssl-0.9.8t.msi
python-2.7.3
Django-1.4.3
psycopg2-2.4.6.win32-py2.7-pg9.2.2-release
cx_Oracle-5.1.2-10g.win32-py2.7
PIL-1.1.7.win32-py2.7
python-ldap-2.4.10.win32-py2.7
south-0.7.6
xlrd-0.9.0
xlwt-0.7.5
mod_wsgi.so
I have tried with the WSGIApplicationGroup %{GLOBAL} directive and setting the log level to debug and info but the resulting logs don't give any additional information.
I have posted apache debug level log at http://dpaste.com/1268653/
I have posted apache info level log at http://dpaste.com/1268660/
Both these logs were taken after a fresh restart of apache and then the application hanging and until I stopped apache and copied the logs.
I also tried running the Hello World Application as documented at https://code.google.com/p/modwsgi/wiki/ConfigurationGuidelines and it worked fine.
I still remain clueless. Appreciate if you could guide me what else I could do to get more details of the issue.
Appreciate if someone could guide me with respect to what more I can do to solve this problem or get more information to get to the root of this.
I was able to solve this issue in the end.
The post at Runtime error R6034 in embedded Python application led me to a solution.
Thanks to Graham Dumpleton and others who were helping me offline to get this issue solved.
It was rather cheeky in the end, a conflicting version of msvcr90.dll
I removed the IBM Bit from the path and it works fine now.
I'm trying to run the Echo sample that comes with WSO2 WSF-CPP, and I get the following errors:
[Tue Dec 18 14:26:51 2012] [error] dep_engine.c(1008) Axis2
Configuration file name not found [Tue Dec 18 14:26:51 2012] [error]
dep_engine.c(872) axis2.xml is not available in client repo . [Tue
Dec 18 14:26:51 2012] [error] conf_init.c(201) Loading deployment
engine failed for client repository . [Tue Dec 18 14:26:51 2012]
[critical] ServiceClient.cpp(223) Cannot create service client
I follow the installation steps in 1 and I don't have any problem, but I'm thinking that there is something missed.
Thanks in advance,
U.
1[http://wso2.org/library/tutorials/dummys-guide-writing-web-service-clients-wso2-wsf-c#Running_Your_First_Web_Service_Client_with_WSO2_WSF_CPP]
Set the environemnt variable WSFCPP_HOME to your WSO2 CPP installation path.
Seems your path is not set correctly thats why you are seeing this error.
(I can run the samples in linux)
I have a Django application using django-mssql to communicate w/ SQL Server.
This works just fine in the dev server (runserver) but under Apache/mod-wsgi, I get a fail related to it trying to find a .dll which does exist:
[Thu May 19 15:35:09 2011] [error] [client 127.0.0.1] File "C:\\Python27\\lib\\site-packages\\win32\\lib\\pywintypes.py", line 98, in
__import_pywin32_system_module__ [Thu May 19 15:35:09 2011] [error] [client
127.0.0.1] raise ImportError("No system module '%s' (%s)" % (modname, filename)) [Thu May 19 15:35:09 2011] [error] [client 127.0.0.1] ImportError: No system module 'pywintypes' (pywintypes27.dll)
pywintypes27.dll exists in C:\Windows\SysWOW64 (64 bit windows, but I installed 32 bit py and Apache)
Is there something in either httpd.conf or WSGIScriptAlias I need to do/specify to help it find this dll? Something else I should do? I've done a fair bit of Googling/Binging/Searching to no avail.
Some further info:
python27 (not Active State)
pywin32 is installed
Win Server 2008 (64 bit)
Apache 2.2
Django 1.3
Thanks
You mentioned that you have Apache 32bits and the official mod_wsgi site seems to only have win32 mod_wsgi binaries available, which in turn also require a 32 bits version of Python. From your description it is likely that you are using the pywin32 library for Windows 64 bits and you configuration expects the 32 bits one.