Flask Deployment

We will deploy python 3 flask source code using:

wfastcgi with environment as: windows server + IIS
mod_wsgi with environment as: CentOS 7 + apache 2

On Centos

yum install httpd-devel

pip3 install mod-wsgi

mod_wsgi-express install-module > /etc/httpd/conf.modules.d/02-wsgi.conf

vi /etc/httpd/conf.modules.d/02-wsgi.conf

# # /etc/httpd/conf.modules.d/02-wsgi.conf

LoadModule wsgi_module "/usr/lib64/httpd/modules/mod_wsgi-py34.cpython-34m.so"

For each application (exampe of 'rmd ' application installed on '/opt' ):

WSGIScriptAlias /rmd /opt/rmd/wsgi.py

WSGIRestrictStdout Off

WSGIDaemonProcess rmd.srv.devel processes=2 threads=15 display-name=%{GROUP} python-path=/opt/rmd:/usr/lib64/python3.4/site-packages

WSGIProcessGroup rmd.srv.devel

<Directory "/opt/rmd">

   WSGIScriptReloading On

   WSGIApplicationGroup %{GLOBAL}

   AllowOverride All

   Require all granted

</Directory>

copy source to server, then set permission:

find . -type f -exec chmod 640 {} \;

find . -type d -exec chmod 750 {} \;

# # vi wsgi.py

import sys

PROJECT_DIR = '/opt/rmd'

sys.path.insert(0, PROJECT_DIR)

from rmd import app as application

del sys

if __name__ == "__main__":

    application.run()

sudo systemctl restart httpd

tail /var/log/httpd/error_log

On Windows

install --> [Server Manager - Role Service -CGI]

pip install wfastcgi

pip install virtualenv

virtualenv venv3

PATH --> C:\Program Files\Python37\Scripts\;C:\Program Files\Python37\;

...

PowerSheel(Admin) --> Set-ExecutionPolicy RemoteSigned

FOLDER Permission --> IIS_IUSRS --> Full

IIS Manager --> Make Site --> STOP --> Handler Mapping --> Add Module Mapping

executable --> "C:\Program Files\Python37\python.exe"|C:\dir_to\application.py

IIS Manager --> FAST CGI Setting --> Add Application

PYTHONPATH C:\dir_to_application\venv3\Lib\site-packages;C:\dir_to_application;c:\Program Files\Python37;c:\Program Files\Python37\Lib\site-packages;

WSGI_HANDLER application_filename.app

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