[FIXED] Problems using Flask on a shared hosting server

Issue

I'm trying to deploy a Flask application on a BlueHost shared hosting server. I have been following this guide. I have made one change, and that is in the .fcgi file. I'm not using flup. This is my .fcgi file (flask.fcgi):

#!/path/to/venv/bin/python
from wsgiref.handlers import CGIHandler
from server import app

CGIHandler().run(app)

I've made the file executable, and when I run ./flask.fcgi from the command line (via SSH) it returns the HTML page for the index route, which is what I expect. But if I navigate to mydomain.com/flask.fcgi I receive a 500 Internal Server error. Checking the server logs I can see this message:

/path/to/venv/bin/python: error while loading shared libraries: libssl.so.3: cannot open shared object file: No such file or directory

I encountered this error before while installing openssl and rectified it by setting the LD_LIBRARY_PATH environment variable to include the path to the location where the libraries were installed. This is my .htaccess file:

# For Flask
PassEnv LD_LIBRARY_PATH
PassEnv REQUEST_METHOD
Options +ExecCGI
AddHandler fcgid-script .fcgi

RewriteEngine On

# For Flask
RewriteCond %{REQUEST_FILENAME} !=/path/to/public_html/flask.fcgi
RewriteRule ^(.*)$ flask.fcgi/$1 [QSA,L]

RewriteOptions inherit

You can see that I try to pass in the LD_LIBRARY_PATH variable, but to no avail, I continue to receive the 500 Internal Server errors, regardless of whether I navigate to mydomain.com/page or to mydomain.com/flask.fcgi directly.

I'm entirely at a loss of where to go from here, any help would be greatly appreciated.

Solution

So I figured out what the problem was. I needed to set LD_LIBRARY_PATH and LD_RUN_PATH before compiling openssl and python. I set the paths and then ran ./Configure and make && make install for openssl, and the same for python.

Answered By - delta-alph