DEV Community

Cover image for Flask Deploy with Apache on CentOS - Minimal Setup

Flask Deploy with Apache on CentOS - Minimal Setup

Sm0ke on November 10, 2019

Hello Coders, This article explains how to deploy a Flask application sandboxed with a virtualenv and served by Apache HTTP server using the mod_...
Collapse
 
abbddos profile image
Abdul Rahman Sabbagh

Hi.. Thanks for this tutorial.. I tried it line by line and it worked. However, I've been trying to deploy a more complicated flask app that I have been working on for a while, and it's not working. I hope you can help me out. I'll be very grateful.

Collapse
 
sm0ke profile image
Sm0ke

Hello Abdul, Thanks for reading.
I'll be glad to help. Tell me more about your app.

Collapse
 
abbddos profile image
Abdul Rahman Sabbagh

Hi,
It's an app about running warehouses and simple accounting and invoices. It has a lot of local imports. I originally placed the "run.py" inside the project folder and it worked perfectly on the development server, but that does not match the structure described in your tutorial and it would not deploy.

When I place the "run.py" outside the project folder, it would not recognize the local packages I'm importing from within the project.

If you like to take a better look... here's the link on github

github.com/abbddos/Enterprise_1

This is my first web project ever, so I know there's a small twist somewhere that I'm missing.

Thank you very very much

Thread Thread
 
sm0ke profile image
Sm0ke

Hello,
let's chat in private.

Collapse
 
veeresh_babu_538d7dd32b5d profile image
Veeresh Babu

I tried the steps above, but stuck during "flask run" with below error, Can anyone please help / point out where I'm going wrong ?

  • Serving Flask app 'run.py' (lazy loading)
  • Environment: production WARNING: This is a development server. Do not use it in a production deployment. Use a production WSGI server instead.
  • Debug mode: off Usage: flask run [OPTIONS] Try 'flask run --help' for help.

Error: While importing 'run', an ImportError was raised:

Traceback (most recent call last):
File "/var/www/hitme/lib/python3.6/site-packages/flask/cli.py", line 260, in locate_app
import(module_name)
File "/var/www/hitme/run.py", line 2, in
from app import app
ImportError: cannot import name 'app'

Collapse
 
veeresh_babu_538d7dd32b5d profile image
Veeresh Babu

I was able to work through this and resolve this by using

import web_tool
app = web_tool.app

Collapse
 
techwithx profile image
Xavier Alexander

@sm0ke Thanks for this tutorial! Very helpful!

For anybody referencing a a virtual environment in their wsgi file, and getting Permission Denied in the httpd error logs:

Make sure proper permissions are applied to the virtual environment's parent directories, so that the apache user, or whatever user you have set for the WSGIDaemonProcess, can actually get to it.

Collapse
 
sm0ke profile image
Sm0ke

Hello Xavier. If you have the time, please drop here a config sample that uses WSGIDaemonProcess.
10x mate

Collapse
 
techwithx profile image
Xavier Alexander

I used the same config as your tutorial where the WSGIDaemonProcess will be ran as the apache user.

 ServerName localhost

 WSGIDaemonProcess hitme user=apache group=apache threads=2

 WSGIScriptAlias / /var/www/hitme/wsgi.py

 <Directory /var/www/hitme>
     Require all granted
 </Directory>
Thread Thread
 
sm0ke profile image
Sm0ke

Super cool. Thank you! :)

Collapse
 
sirishamuddana profile image
Sirisha-Muddana

Hi,
I Followed your steps from the above tutorial without using lynx, directly used browser and given localhost:8080 but browser not giving Hello world and showing that site cant be reached. restarted Apache server, port 8080 is listening and open,even wsgi file is also same like yours. below are the logs. pls check it out
[Wed Mar 25 16:26:18.575220 2020] [core:notice] [pid 7322:tid 139847942441216] AH00094: Command line: '/usr/sbin/httpd -D FOREGROUND'
[Wed Mar 25 17:59:57.166193 2020] [wsgi:error] [pid 7326:tid 139847205377792] [client 162.243.129.144:49818] Target WSGI script not found or unable to stat: /var/www/flask/wsgi.py

Collapse
 
sm0ke profile image
Sm0ke • Edited

Hello Sirisha,
Thanks for noticing the article. Try to apply this short checklist:

  • check if /var/www/flask/wsgi.py exists on disk
  • see the permissions of the file

Please notice that Apache runs under certain privileges. Make sure that Apache can access the file.
Let me know if my suggestions helped.

Collapse
 
sirishamuddana profile image
Sirisha-Muddana • Edited

yes, exists on disk and given permission using this command: chmod 755 /var/www/flask/wsgi.py.. but no change

Collapse
 
williamium3000 profile image
william

I have followed your steps from the above tutorial and one of the problem is that i cannot specifying my python interpreter to be the vitual one, and apache just uses the default python2.7.5 initially installed in centos.how can i solve this
[Thu Apr 09 13:42:29.349530 2020] [lbmethod_heartbeat:notice] [pid 16236] AH02282: No slotmem from mod_heartmonitor
[Thu Apr 09 13:42:29.353249 2020] [mpm_prefork:notice] [pid 16236] AH00163: Apache/2.4.6 (CentOS) mod_wsgi/3.4 Python/2.7.5 configured -- resuming normal operations
[Thu Apr 09 13:42:29.353276 2020] [core:notice] [pid 16236] AH00094: Command line: '/usr/sbin/httpd -D FOREGROUND'
[Thu Apr 09 13:42:32.225160 2020] [:error] [pid 16242] [client 120.230.96.144:49562] mod_wsgi (pid=16242): Target WSGI script '/var/www/hitme/wsgi.py' cannot be loaded as Python module.
[Thu Apr 09 13:42:32.225201 2020] [:error] [pid 16242] [client 120.230.96.144:49562] mod_wsgi (pid=16242): Exception occurred processing WSGI script '/var/www/hitme/wsgi.py'.
[Thu Apr 09 13:42:32.225224 2020] [:error] [pid 16242] [client 120.230.96.144:49562] Traceback (most recent call last):
[Thu Apr 09 13:42:32.225243 2020] [:error] [pid 16242] [client 120.230.96.144:49562] File "/var/www/hitme/wsgi.py", line 13, in
[Thu Apr 09 13:42:32.225307 2020] [:error] [pid 16242] [client 120.230.96.144:49562] from app import app as application
[Thu Apr 09 13:42:32.225318 2020] [:error] [pid 16242] [client 120.230.96.144:49562] File "/var/www/hitme/app/init.py", line 2, in
[Thu Apr 09 13:42:32.225455 2020] [:error] [pid 16242] [client 120.230.96.144:49562] from flask import Flask
[Thu Apr 09 13:42:32.225469 2020] [:error] [pid 16242] [client 120.230.96.144:49562] File "/var/www/hitme/hitme/lib/python3.7/site-packages/flask/init.py", line 14, in
[Thu Apr 09 13:42:32.225511 2020] [:error] [pid 16242] [client 120.230.96.144:49562] from jinja2 import escape
[Thu Apr 09 13:42:32.225519 2020] [:error] [pid 16242] [client 120.230.96.144:49562] File "/var/www/hitme/hitme/lib/python3.7/site-packages/jinja2/init.py", line 9, in
[Thu Apr 09 13:42:32.225561 2020] [:error] [pid 16242] [client 120.230.96.144:49562] from .bccache import BytecodeCache
[Thu Apr 09 13:42:32.225570 2020] [:error] [pid 16242] [client 120.230.96.144:49562] File "/var/www/hitme/hitme/lib/python3.7/site-packages/jinja2/bccache.py", line 19, in
[Thu Apr 09 13:42:32.225649 2020] [:error] [pid 16242] [client 120.230.96.144:49562] from .compat import BytesIO
[Thu Apr 09 13:42:32.225658 2020] [:error] [pid 16242] [client 120.230.96.144:49562] File "/var/www/hitme/hitme/lib/python3.7/site-packages/jinja2/_compat.py", line 120, in
[Thu Apr 09 13:42:32.225701 2020] [:error] [pid 16242] [client 120.230.96.144:49562] from pathlib import PurePath
[Thu Apr 09 13:42:32.225709 2020] [:error] [pid 16242] [client 120.230.96.144:49562] File "/usr/local/Python-3.7.7/Lib/pathlib.py", line 9, in
[Thu Apr 09 13:42:32.226042 2020] [:error] [pid 16242] [client 120.230.96.144:49562] from _collections_abc import Sequence
[Thu Apr 09 13:42:32.226086 2020] [:error] [pid 16242] [client 120.230.96.144:49562] File "/usr/local/Python-3.7.7/Lib/_collections_abc.py", line 58
[Thu Apr 09 13:42:32.226092 2020] [:error] [pid 16242] [client 120.230.96.144:49562] async def _coro(): pass
[Thu Apr 09 13:42:32.226095 2020] [:error] [pid 16242] [client 120.230.96.144:49562] ^
[Thu Apr 09 13:42:32.226098 2020] [:error] [pid 16242] [client 120.230.96.144:49562] SyntaxError: invalid syntax
[Thu Apr 09 13:42:35.936716 2020] [:error] [pid 16243] [client 120.230.96.144:49564] mod_wsgi (pid=16243): Target WSGI script '/var/www/hitme/wsgi.py' cannot be loaded as Python module.
[Thu Apr 09 13:42:35.936795 2020] [:error] [pid 16243] [client 120.230.96.144:49564] mod_wsgi (pid=16243): Exception occurred processing WSGI script '/var/www/hitme/wsgi.py'.
[Thu Apr 09 13:42:35.936830 2020] [:error] [pid 16243] [client 120.230.96.144:49564] Traceback (most recent call last):
[Thu Apr 09 13:42:35.936861 2020] [:error] [pid 16243] [client 120.230.96.144:49564] File "/var/www/hitme/wsgi.py", line 13, in
[Thu Apr 09 13:42:35.936955 2020] [:error] [pid 16243] [client 120.230.96.144:49564] from app import app as application
[Thu Apr 09 13:42:35.936972 2020] [:error] [pid 16243] [client 120.230.96.144:49564] File "/var/www/hitme/app/
init.py", line 2, in
[Thu Apr 09 13:42:35.937159 2020] [:error] [pid 16243] [client 120.230.96.144:49564] from flask import Flask
[Thu Apr 09 13:42:35.937179 2020] [:error] [pid 16243] [client 120.230.96.144:49564] File "/var/www/hitme/hitme/lib/python3.7/site-packages/flask/
init.py", line 14, in
[Thu Apr 09 13:42:35.937246 2020] [:error] [pid 16243] [client 120.230.96.144:49564] from jinja2 import escape
[Thu Apr 09 13:42:35.937261 2020] [:error] [pid 16243] [client 120.230.96.144:49564] File "/var/www/hitme/hitme/lib/python3.7/site-packages/jinja2/
init_.py", line 9, in
[Thu Apr 09 13:42:35.937313 2020] [:error] [pid 16243] [client 120.230.96.144:49564] from .bccache import BytecodeCache
[Thu Apr 09 13:42:35.937361 2020] [:error] [pid 16243] [client 120.230.96.144:49564] File "/var/www/hitme/hitme/lib/python3.7/site-packages/jinja2/bccache.py", line 19, in
[Thu Apr 09 13:42:35.937490 2020] [:error] [pid 16243] [client 120.230.96.144:49564] from ._compat import BytesIO
[Thu Apr 09 13:42:35.937505 2020] [:error] [pid 16243] [client 120.230.96.144:49564] File "/var/www/hitme/hitme/lib/python3.7/site-packages/jinja2/_compat.py", line 120, in
[Thu Apr 09 13:42:35.937589 2020] [:error] [pid 16243] [client 120.230.96.144:49564] from pathlib import PurePath
[Thu Apr 09 13:42:35.937606 2020] [:error] [pid 16243] [client 120.230.96.144:49564] File "/usr/local/Python-3.7.7/Lib/pathlib.py", line 9, in
[Thu Apr 09 13:42:35.938027 2020] [:error] [pid 16243] [client 120.230.96.144:49564] from _collections_abc import Sequence
[Thu Apr 09 13:42:35.938093 2020] [:error] [pid 16243] [client 120.230.96.144:49564] File "/usr/local/Python-3.7.7/Lib/_collections_abc.py", line 58
[Thu Apr 09 13:42:35.938104 2020] [:error] [pid 16243] [client 120.230.96.144:49564] async def _coro(): pass
[Thu Apr 09 13:42:35.938109 2020] [:error] [pid 16243] [client 120.230.96.144:49564] ^
[Thu Apr 09 13:42:35.938114 2020] [:error] [pid 16243] [client 120.230.96.144:49564] SyntaxError: invalid syntax
this is the error caused by python2.x in my app

Collapse
 
sm0ke profile image
Sm0ke • Edited

Oh .. , sounds like super fun. I see two options here:

  • Recompile the mod_wsgi module using Python3
  • Update the deployment schema to use Apache as a reverse proxy and start the app using Gunicorn

Let me know if this helps.

Collapse
 
williamium3000 profile image
william • Edited

I have gone with the first approach and encounters problems and would like to communicate with you on this a bit more.
so i uninstall mod_wsgi on python2, and tried install using zip pack from mod_wsgi website
./configure --with-python=/usr/local/bin/python3 this is the configure that i used to specify python interpreter
then make && make install
problem occurs(part of the error reports looks like the following)

/usr/bin/ld: /usr/local/python3/lib/libpython3.7m.a(Python-ast.o): relocation R_X86_64_32S against `.rodata' can not be used when making a shared object; recompile with -fPIC
/usr/bin/ld: /usr/local/python3/lib/libpython3.7m.a(ast.o): relocation R_X86_64_32 against `.rodata.str1.1' can not be used when making a shared object; recompile with -fPIC
/usr/bin/ld: /usr/local/python3/lib/libpython3.7m.a(ast_opt.o): relocation R_X86_64_32S against `.rodata' can not be used when making a shared object; recompile with -fPIC
/usr/bin/ld: /usr/local/python3/lib/libpython3.7m.a(ast_unparse.o): relocation R_X86_64_32 against `.rodata.str1.1' can not be used when making a shared object; recompile with -fPIC
/usr/bin/ld: /usr/local/python3/lib/libpython3.7m.a(getcompiler.o): relocation R_X86_64_32 against `.rodata.str1.8' can not be used when making a shared object; recompile with -fPIC
/usr/bin/ld: /usr/local/python3/lib/libpython3.7m.a(getcopyright.o): relocation R_X86_64_32 against `.rodata' can not be used when making a shared object; recompile with -fPIC
/usr/bin/ld: /usr/local/python3/lib/libpython3.7m.a(getplatform.o): relocation R_X86_64_32 against `.rodata.str1.1' can not be used when making a shared object; recompile with -fPIC
/usr/bin/ld: /usr/local/python3/lib/libpython3.7m.a(structmember.o): relocation R_X86_64_32S against `.rodata' can not be used when making a shared object; recompile with -fPIC
/usr/bin/ld: /usr/local/python3/lib/libpython3.7m.a(getopt.o): relocation R_X86_64_32S against `.rodata.str4.4' can not be used when making a shared object; recompile with -fPIC
/usr/bin/ld: /usr/local/python3/lib/libpython3.7m.a(parser.o): relocation R_X86_64_32 against `.rodata.str1.8' can not be used when making a shared object; recompile with -fPIC
/usr/bin/ld: /usr/local/python3/lib/libpython3.7m.a(node.o): relocation R_X86_64_PC32 against symbol `PyObject_Free' can not be used when making a shared object; recompile with -fPIC
/usr/bin/ld: final link failed: Bad value
collect2: error: ld returned 1 exit status
apxs:Error: Command failed with rc=65536
.
make: *** [src/server/mod_wsgi.la] Error 1

my server is a centos 7 with gcc and python2 installed already. i install python3 using zip pack from its home webside and set --enable-shared to make sure that its library can be shared.
another way i tried is through pip3 install mod_wsgi
problems:

/usr/bin/ld: /usr/local/python3/lib/libpython3.7m.a(Python-ast.o): relocation R_X86_64_32S against `.rodata' can not be used when making a shared object; recompile with -fPIC
    /usr/bin/ld: /usr/local/python3/lib/libpython3.7m.a(ast.o): relocation R_X86_64_32 against `.rodata.str1.1' can not be used when making a shared object; recompile with -fPIC
    /usr/bin/ld: /usr/local/python3/lib/libpython3.7m.a(ast_opt.o): relocation R_X86_64_32S against `.rodata' can not be used when making a shared object; recompile with -fPIC
    /usr/bin/ld: /usr/local/python3/lib/libpython3.7m.a(ast_unparse.o): relocation R_X86_64_32 against `.rodata.str1.1' can not be used when making a shared object; recompile with -fPIC
    /usr/bin/ld: /usr/local/python3/lib/libpython3.7m.a(getcompiler.o): relocation R_X86_64_32 against `.rodata.str1.8' can not be used when making a shared object; recompile with -fPIC
    /usr/bin/ld: /usr/local/python3/lib/libpython3.7m.a(getcopyright.o): relocation R_X86_64_32 against `.rodata' can not be used when making a shared object; recompile with -fPIC
    /usr/bin/ld: /usr/local/python3/lib/libpython3.7m.a(getplatform.o): relocation R_X86_64_32 against `.rodata.str1.1' can not be used when making a shared object; recompile with -fPIC
    /usr/bin/ld: /usr/local/python3/lib/libpython3.7m.a(structmember.o): relocation R_X86_64_32S against `.rodata' can not be used when making a shared object; recompile with -fPIC
    /usr/bin/ld: /usr/local/python3/lib/libpython3.7m.a(getopt.o): relocation R_X86_64_32S against `.rodata.str4.4' can not be used when making a shared object; recompile with -fPIC
    /usr/bin/ld: /usr/local/python3/lib/libpython3.7m.a(parser.o): relocation R_X86_64_32 against `.rodata.str1.8' can not be used when making a shared object; recompile with -fPIC
    /usr/bin/ld: /usr/local/python3/lib/libpython3.7m.a(node.o): relocation R_X86_64_PC32 against symbol `PyObject_Free' can not be used when making a shared object; recompile with -fPIC
    /usr/bin/ld: final link failed: Bad value
    collect2: error: ld returned 1 exit status
    error: command 'gcc' failed with exit status 1
    ----------------------------------------
ERROR: Command errored out with exit status 1: /usr/local/python3/bin/python3.7 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-313gyz5m/mod-wsgi/setup.py'"'"'; __file__='"'"'/tmp/pip-install-313gyz5m/mod-wsgi/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record /tmp/pip-record-a4z7qsiz/install-record.txt --single-version-externally-managed --compile --install-headers /usr/local/python3/include/python3.7m/mod-wsgi Check the logs for full command output.

i have stuck with this for a few days and would really appreciated if you can help
thx sincerely.

Thread Thread
 
sm0ke profile image
Sm0ke • Edited

Hello,
That's a super heavy error. I've googled a little, nothing relevant found. Apache mod_wsgi is super buggy on CentOS. I had many issues in the past and skip over that setup.

I'm using on CentOS a simple setup that uses uWSGI to start the Flask/Django app and Apache as a reverse proxy.
uWSGI is fast but is not handle the SSL layer (that's why you need Apache in front). Feel free to use Gunicorn instead of uWSGI, in case you are familiar with it.

I'm not super free with my time, but we can chat LIVE on Discord. I'm Sm0ke on that server (the moderator).

Collapse
 
dlink profile image
David Link

Hi Sm0ke, Thank you for this great article. It is very helpful and well written.

I noticed what I believe is one small typo. Where it says "app/init.py file contents" I believe it should say "app/init.py file contents", and that is probably a Markdown issue.

Were you able to resolve @williamium3000 's issues regarding setting the python interpreter? I'm trying to get this to work with pyenv (pyenv install 3.9.5), but can't get mod_wsgi to see my locally installed interpreter in my venv, even if I put it in the she-bang

#!/data/apps/hitme/.venv/bin/python

import os
import sys

def application(environ, start_response):
    status = '200 OK'
    output = bytes(getEnv(), 'utf-8')
    response_headers = [('Content-type', 'text/plain'),
                        ('Content-Length', str(len(output)))]
    start_response(status, response_headers)
    return [output]

def getEnv():
    keys = list(os.environ.keys())
    keys.sort()
    o = ''
    o += "OS Environment\n"
    o += 'Python Version: %s\n' % sys.version
    o += 'Python prefix: %s\n' % sys.prefix
    for k in keys:
        v = os.environ[k]
        o += ("  %s: %s\n" % (k, v))
    return o
Enter fullscreen mode Exit fullscreen mode

Reports:

OS Environment
Python Version: 3.6.8 (default, Mar 18 2021, 08:58:41)
[GCC 8.4.1 20200928 (Red Hat 8.4.1-1)]
Python prefix: /apps/mod_wsgi/.venv
  INVOCATION_ID: 8c7e2ab82ab7415ca0e1e2c1fddde05a
  JOURNAL_STREAM: 9:1072847
  LANG: C
  NOTIFY_SOCKET: /run/systemd/notify
  PATH: /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin
Enter fullscreen mode Exit fullscreen mode

3.6.8 is the OS's python version. Thanks for your help

Collapse
 
sm0ke profile image
Sm0ke • Edited

Hello @dlink ,

Indeed the app/\_\_init\_\_.py cannot be formatted being styled automatically by the Markdown parser.

Regarding the Python version, try to force the PATH update in wsgi.py as below

site.addsitedir('/data/apps/hitme/.venv/..../site-packages')
sys.path.insert(0, '/data/apps/hitme/')
Enter fullscreen mode Exit fullscreen mode

P.S. adapt the paths to be resolved properly.
Let me know the results.

Collapse
 
bawbam profile image
Ivan López

Hi, thanks for this tutorial dude, I'm following the tutorial and work fine but with personal project not work and send me error "Target WSGI script .... cannot be loaded as python module". Any idea what happend? thank you

Collapse
 
neoxenon profile image
Darya

Hi!
I am on flask run part, in console it shows:
Serving Flask app "run.py" (lazy loading)

  • Environment: development
  • Debug mode: on
  • Running on 127.0.0.1:5000/ (Press CTRL+C to quit)
  • Restarting with stat
  • Debugger is active!
  • Debugger PIN: but in browser 127.0.0.1:5000 says site can't be reached
Collapse
 
anhtuan3996 profile image
Cao Anh Tuan • Edited

Thanks for this tutorial.
I have a problem, WSGT cannot load Python module. I checked to error_log
image!
Do you have any idea to resolve this problem?

Collapse
 
chasexu profile image
Chase

hi, I got a 403 forbidden error, any possible solutions? I created my app not in www folder, is this going to cause a trouble.

Collapse
 
sm0ke profile image
Sm0ke

Hello Chase. Thank you for noticing the article.
Can you extract drop here some relevant information from the apache logs?
Also, using a Heroku deploy, might be a good choice.

Collapse
 
chasexu profile image
Chase

Hi, I have figured out the problem, all I have to do is to create every in var/www folder instead. But I started to have another problem is that, the system try to run the app using python2.7 which is absolutely causing errors.
Here is the error log gives me,

[Thu Feb 06 23:17:27.417817 2020] [:error] [pid 24709] [client ::1:39996] SyntaxError: invalid syntax
[Thu Feb 06 23:20:07.161239 2020] [:error] [pid 24708] [client ::1:39998] mod_wsgi (pid=24708): Target WSGI script '/var/www/nzn/wsgi.py' cannot be loaded as Python module.
[Thu Feb 06 23:20:07.161274 2020] [:error] [pid 24708] [client ::1:39998] mod_wsgi (pid=24708): Exception occurred processing WSGI script '/var/www/nzn/wsgi.py'.
[Thu Feb 06 23:20:07.161288 2020] [:error] [pid 24708] [client ::1:39998] Traceback (most recent call last):
[Thu Feb 06 23:20:07.161301 2020] [:error] [pid 24708] [client ::1:39998] File "/var/www/nzn/wsgi.py", line 10, in
[Thu Feb 06 23:20:07.161344 2020] [:error] [pid 24708] [client ::1:39998] from nzn import app as application
[Thu Feb 06 23:20:07.161372 2020] [:error] [pid 24708] [client ::1:39998] File "/var/www/nzn/nzn/init.py", line 64
[Thu Feb 06 23:20:07.161376 2020] [:error] [pid 24708] [client ::1:39998] marks = {range: f'{range:.2f}' for range in [0.02, 0.05, 0.1, 0.15, 0.2]},
[Thu Feb 06 23:20:07.161379 2020] [:error] [pid 24708] [client ::1:39998] ^
[Thu Feb 06 23:20:07.161381 2020] [:error] [pid 24708] [client ::1:39998] SyntaxError: invalid syntax

As my personal experience this error is caused by using the python2 instead of python3.

Thanks

Thread Thread
 
sm0ke profile image
Sm0ke

Hello, yep might be the Python version.
Using Python3 is not an option? Python2 reach the EOL in Jan this year.

Collapse
 
alainaahuja profile image
alainaahuja

This is a great article! I also found an article about deploying flask apps on mac: alainaahuja5.wixsite.com/flaskonmac

Collapse
 
yashwantwaskel3 profile image
Yashwant Waskel

Hello sir, everything works fine as per the tutorial until 'lynx localhost' but when I try to open it in the web browser it just shows the directory and not the app. Please help me regarding.

Collapse
 
sm0ke profile image
Sm0ke

Hello,

Thank for stopping by! try to check the port 5000 and after double-check the apache configuration.

Not necessary to apply my suggestion, just configure Apache to act like a proxy for the Flask app.

Let me know your progress.
🚀🚀

Collapse
 
yashbhat profile image
Yashaswini Bhat

Thank you for this article!

Well for me it works fine but my other existing sites at /var/www/html are affected and no longer come up. How to avoid this?

Collapse
 
sm0ke profile image
Sm0ke

Hello & Thanks for reading!
The whole set up is isolated in .../hitme/... directory and the app run in a sandboxed environment.
See the apache error log for a specific error regarding the other apps, and drop here the text.
I'll try to respond fast as I can.

Collapse
 
tayfunerbilen profile image
Tayfun Erbilen • Edited

Hey, thanks for article it helped a lot :) I have a problem, I try to import something like slugify etc. but I got Internal Server Error and I don't know why, any suggestion?

Collapse
 
nb2831 profile image
nb2831

I am getting this random error with no idea how to debug this

Collapse
 
yashwantwaskel3 profile image
Yashwant Waskel • Edited

Hello sir, everything works fine as per the tutorial until 'lynx localhost', but when I am opening it in web browser it just shows the directory and not the app. Please help me out regarding.