I have finally gotten flask to work on nethserver, and I would like to make a howto, What do I do?
I think it will be surely appreciated 
Just Edit your first post with the instructions to make it work.
Cheers.
Finally I have gotten flask to work in the main html area, /var/www/html, lots of gotchas were encountered and google-fu-ed away.
Here are step by step instructions on how to wade into this swamp and get er done.
This is for nethserver7.
#Install Prerequisites:
yum -y install gcc openssl-devel python-devel httpd-devel mysql-devel python3 python3-devel nano bzip2-devel libffi-devel python-pip mlocate groupinstall ‘development tools’
#Make sure the system is stable:
#In nethserver this is a very good command that stabilizes changes
/etc/e-smith/events/actions/system-adjust
Install mod_wsgi, if you have upgraded pip3 already then there will be an extra module install of mod_wsgi in /etc/httpd/conf.modules.d/ and needs to be removed. You need the canonical location for the python site packages to be discovered.
PIP Install of Mod Wsgi:
this first install for some reason helps the next install to work!! Don’t know why just does.
pip3 install mod_wsgi
and again
pip3 install --target=/path/to/python3.x/site-packages mod_wsgi
#Check to see if it worked:
mod_wsgi-express module-config
Hmm only allowed two links, none were entered. Here is more
#Result you should get something like this, if not some fiddling is in order as you cannot go further until it #is fixed:
LoadModule wsgi_module “/usr/local/lib64/python3.6/site-packages/mod_wsgi/server/mod_wsgi-py36.cpython-36m-x86_64-linux-gnu.so”
WSGIPythonHome “/usr”
now check to see if mod_wsgi is loaded, if it is you need to remove the snippit from the conf.modules.d #folder
sudo httpd -M | grep wsgi
not found , which at the moment is what we need. Now we change the httpd.conf so it will all work.
mkdir -p /etc/e-smith/templates-custom/etc/httpd/conf.d/nethserver.conf
cd /etc/e-smith/templates-custom/etc/httpd/conf.d/nethserver.conf
#Make the module snippit, I;m putting it here as it still works and it is old habit from 20 years with
e-smith and I like to keep everything in one place.
nano 20LoadModuleWSGI_MOD
enter this line from the test above and then ctrl-o crtl-x
LoadModule wsgi_module “/usr/local/lib64/python3.6/site-packages/mod_wsgi/server/mod_wsgi-py36.cpython-36m-x86_64-linux-gnu.so”
#magic
/etc/e-smith/events/actions/system-adjust
test
sudo httpd -M | grep wsgi
win! result, otherwise, more fiddling
wsgi_module (shared)
#Make the errorlog snippit
nano 20wsgierrorlog
ErrorLog: The location of the error log file. If this does not start
with /, ServerRoot is prepended to it.
ErrorLog /var/log/httpd/error_log
LogLevel: Control the number of messages logged to the error_log.
Possible values include: debug, info, notice, warn, error, crit,
alert, emerg.
LogLevel info
more essentiials
nano 90WSGIstuff
WSGIScriptAlias / /var/www/html/myapp.wsgi
#stabilize
/etc/e-smith/events/actions/system-adjust
#Now test the apache config
apachectl configtest
at this point you may want to use a virtual environment especially if you plan to host multiple
python websites on the server, that is more than I will describe here but it is possible to do and google # can lead you there.
make the wsgi file, there are two choices here, one for a simple app and one for a factory app
cd /var/www/html
nano myapp.wsgi
This one is for a simple python script
-- coding: utf-8 --
import sys
import os
project = “app”
Use instance folder, instead of env variables.
specify dev/production config
#os.environ[‘%s_APP_CONFIG’ % project.upper()] = ‘’
Google Code Archive - Long-term storage for Google Code Project Hosting.
#os.environ[‘HOME’] = pwd.getpwuid(os.getuid()).pw_dir
BASE_DIR = os.path.join(os.path.dirname(file))
if BASE_DIR not in sys.path:
sys.path.append(BASE_DIR)
give wsgi the “application”
from app import app as application
This one is for a complex python factory script that starts with init
-- coding: utf-8 --
import sys
import os
project = “app”
Use instance folder, instead of env variables.
specify dev/production config
os.environ[‘%s_APP_CONFIG’ % project.upper()] = ‘’
Google Code Archive - Long-term storage for Google Code Project Hosting.
os.environ[‘HOME’] = pwd.getpwuid(os.getuid()).pw_dir
BASE_DIR = os.path.join(os.path.dirname(file))
if BASE_DIR not in sys.path:
sys.path.append(BASE_DIR)
give wsgi the “application”
from app import app as application
application
This is the simple layout
html
myapp.wsgi
app.py
static
css
images
js
uploads
templates
This is the complex layout
Primary
html
myapp.wsgi
config.py
app
init.py
blueprints
static
css
images
js
uploads
templates
#now
pip3 install -r requirements.txt
#This a Test app:
nano app.py
from flask import Flask
app = Flask(name)
@app.route(‘/’)
def hello_world():
return ‘Hello, World, God I hope this works…’
if name == ‘main’:
app.run(
host=“0.0.0.0”,
port=int(“80”),
debug=True
)
Turn on FTP access so you can transfer files to the site and chmod the /var/www/http folder to allow
write access
applications/webserver/ftp
go to system/services and edit the mysqld firewall access to get the ability to remote into the
database
so you can use mysqlworkbench to mess with the database.
#create the database
ENJOY!
Visit my site at gidout.com, It is a work in progress
Dang this editor really messes with layout, ugly
Formatting is done with Markdown; here are some of the basics:
https://commonmark.org/help/
I’ve also updated your trust level so you shouldn’t have the limits on links any more.
In addition some tips on formatting:
BTW, the first post is wikified so it can be easily edited.
Having a plain text choice would work for me, If anyone nees more just DM me here
Cleaned it up
Finally I have gotten Flask to work in the main html area, /var/www/html, lots of gotchas were encountered and google-fu-ed away.
Here are step by step instructions on how to wade into this swamp and get er done.
This is for nethserver7.
Install Prerequisites:
yum -y install gcc openssl-devel python-devel httpd-devel mysql-devel python3 python3-devel nano bzip2-devel libffi-devel python-pip mlocate groupinstall 'development tools'
Make sure the system is stable: In nethserver this is a very good command that stabilizes changes
/etc/e-smith/events/actions/system-adjust
Install mod_wsgi, if you have upgraded pip3 already then there will be an extra module install of mod_wsgi in /etc/httpd/conf.modules.d/ and needs to be removed. This is because the canonical location is needed for the python site packages to be discovered.
PIP Install of Mod Wsgi: this first install for some reason helps the next install to work!! Don’t know why just does.
pip3 install mod_wsgi
and again
pip3 install --target=/path/to/python3.x/site-packages mod_wsgi
Check to see if it worked:
mod_wsgi-express module-config
Result, You should get something like this, if not some fiddling is in order as you cannot go further until it is fixed:
LoadModule wsgi_module “/usr/local/lib64/python3.6/site-packages/mod_wsgi/server/mod_wsgi-py36.cpython-36m-x86_64-linux-gnu.so”
WSGIPythonHome “/usr”
now check to see if mod_wsgi is loaded, if it is you need to remove the snippit from the conf.modules.d folder
sudo httpd -M | grep wsgi
If not found, which at the moment is what we need. Now we change the httpd.conf so it will all work.
mkdir -p /etc/e-smith/templates-custom/etc/httpd/conf.d/nethserver.conf
cd /etc/e-smith/templates-custom/etc/httpd/conf.d/nethserver.conf
Make the module snippit, I’m putting it here in nethserver.conf as it still works and it is old habit from 20 years with e-smith and I like to keep everything in one place.
nano 20LoadModuleWSGI_MOD
enter this line from the test above and then ctrl-o crtl-x
LoadModule wsgi_module "/usr/local/lib64/python3.6/site-packages/mod_wsgi/server/mod_wsgi-py36.cpython-36m-x86_64-linux-gnu.so"
magic
/etc/e-smith/events/actions/system-adjust
test
sudo httpd -M | grep wsgi
win! If not good result, more fiddling
wsgi_module (shared)
Make the errorlog snippit
nano 20wsgierrorlog
#ErrorLog: The location of the error log file. If this does not start with /,
#ServerRoot is prepended to it.
ErrorLog /var/log/httpd/error_log
#LogLevel: Control the number of messages logged to the error_log.
#Possible values include: debug, info, notice, warn, error, crit, alert, emerg.
LogLevel info
more essentiials
nano 90WSGIstuff
WSGIScriptAlias / /var/www/html/myapp.wsgi
stabilize
/etc/e-smith/events/actions/system-adjust
Now test the apache config
apachectl configtest
at this point you may want to use a virtual environment especially if you plan to host multiple
python websites on the server, that is more than I will describe here but it is possible to do and google can lead you there.
make the wsgi file, there are two choices here, one for a simple app and one for a factory app
cd /var/www/html
nano myapp.wsgi
This one is for a simple python script
# -*- coding: utf-8 -*-
import sys
import os
project = "app"
# Use instance folder, instead of env variables.
# specify dev/production config
#os.environ['%s_APP_CONFIG' % project.upper()] = ''
# http://code.google.com/p/modwsgi/wiki/ApplicationIssues#User_HOME_Environment_Variable
#os.environ['HOME'] = pwd.getpwuid(os.getuid()).pw_dir
BASE_DIR = os.path.join(os.path.dirname(__file__))
if BASE_DIR not in sys.path:
sys.path.append(BASE_DIR)
# give wsgi the "application"
from app import app as application
This one is for a complex python factory script that starts with init
# -*- coding: utf-8 -*-
import sys
import os
project = "app"
# Use instance folder, instead of env variables.
# specify dev/production config
# os.environ['%s_APP_CONFIG' % project.upper()] = ''
# http://code.google.com/p/modwsgi/wiki/ApplicationIssues#User_HOME_Environment_Variable
# os.environ['HOME'] = pwd.getpwuid(os.getuid()).pw_dir
BASE_DIR = os.path.join(os.path.dirname(__file__))
if BASE_DIR not in sys.path:
sys.path.append(BASE_DIR)
# give wsgi the "application"
from app import app as application
application
This is the simple layout
>>html
myapp.wsgi
app.py
>>static
>>css
>>images
>>js
>>uploads
>>templates
This is the complex layout
Primary
>>html
myapp.wsgi
config.py
>>app
__init__.py
>>blueprints
>>static
>>css
>>images
>>js
>>uploads
>>templates
now install all the modules you need
pip3 install -r requirements.txt
This a Test app:
nano app.py
from flask import Flask
app = Flask(__name__)
@app.route('/')
def hello_world():
return 'Hello, World, God I hope this works...'
if __name__ == '__main__':
app.run(
host="0.0.0.0",
port=int("80"),
debug=True
)