How to Deploy a Flask App to Linux (Apache and WSGI)

Подписаться 2,4 тыс.

Просмотров 57 тыс.

50% 1

FULL STACK COURSE (React, Flask, & PostgreSQL): lukepeters.me/build-a-full-st...
So you built a sweet Flask app and you're wondering how to push it to production? In this video I walk through deploying a Flask application to a Linux (Ubuntu) and Apache2 web server using the mod_wsgi Apache module.
0:00 - Intro
0:12 - The Flask app we'll be deploying
00:58 - Upload the app files to your server
1:54 - SSH into the server, install virtual environment
3:22 - Create the WSGI config file
5:49 - Create a VirtualHost config file
8:16 - Enable the new VirtualHost config
8:53 - Install the WSGI Apache module
9:54 - How to debug errors if the Flask app won't run
10:39 - Test the app again - success!
10:58 - Final comments, peace out ✌🏻
---------------------------------------------------------------
WEB HOSTING - VIRTUAL PRIVATE SERVER (VPS)
I swear by Linode. I've been using them for years. Here's my signup link if you want to help me out :) lukepeters.tech/linode
---------------------------------------------------------------
INSTALL APACHE2
www.digitalocean.com/communit...
---------------------------------------------------------------
MY DESK SETUP GEAR
⌨️ Keyboard - amzn.to/3sR3WEK
🖱 Mouse - amzn.to/3aEBvnc
🖥 Monitor - amzn.to/30pmuzd
🦾 Monitor Mount/Arm - amzn.to/3sLd3Xu
🎤 Microphone - amzn.to/3sRfxUb
🦾 Microphone Arm - amzn.to/3xrxImT
🎛 Microphone Processor - amzn.to/3gConme
⚡️ Thunderbolt Dock - amzn.to/3aE8aJC
🔊 Speakers - amzn.to/3nip0D0
🎧 Headphones - amzn.to/3xoCVfm
🪑 Chair - amzn.to/3eBIw9I
---------------------------------------------------------------
Intro music produced by Connor Curley

Наука

Опубликовано:

22 июл 2024

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист

Посмотреть позже

Комментарии : 151

@LukePeters 3 года назад

👋🏻 Hey! Do you like Python? Web app development? Automation?! Let me know what topics you'd like to see me cover next! 😃

@Quaght Год назад

This was awesome! I just built my very first flask app (actually my first web page) and wanted to try to deploy what I have next week for testing. Even without seeing the file structure of the server, I understood what you were explaining so I'm pretty confident. Thank you!

@Rickety3263 2 месяца назад

Great vid. Thanks for including the troubleshoots. This is just what I needed for deploying my first flask app to a container. it’s awesome that it’s running on Apache because that makes the letsencrypt certificate renewals that much easier as well!

@fernandofacioreyes2996 2 месяца назад

I was trying to implement an API on my VPS and you helped me in 11:20 minutes more than any other source of information in 8 days of trying.

@TheDeepDwellers 3 года назад

Thx !!! i've been trying for a long time to deploy my flask app into digitalocean ubuntu server, only after use your config code (10:22) it worked.

@LukePeters 3 года назад

Super happy to hear that! The first time I tried to deploy a Flask app was very frustrating. Glad this helped.

@Turjak_art 2 года назад

Thank you. It is ridiculous what we need to do in order to solve such a simple task. Shame that in all those years of internet they never came to a better and simpler solution.

@HTWwpzIuqaObMt Год назад

I think it is obvious that you do not have knowledge on this topic. Nothibg is more complicated than it should be. It is a quite simple task. A lot of people confuse the "complex" with "time consuming". This process is just time consuming although gives an opportunity to fully customize your web app and server.

@joykillprod Год назад

@@HTWwpzIuqaObMt By lowering the "complexity" you can lower the "time consumption". what Tujark meant is that this process could've been abstracted more because not everyone needs the customization.

@gromoblomov9853 Год назад

@@HTWwpzIuqaObMt I have been analyzing web development for 10 years, and development in general. Even the simplest things cannot make it work out of the box. This is ridiculous. Millions of developers correct configs like children at school correct mistakes in a notebook. And yes, this tutorial does not run on the current ubuntu and apache

@julienweems6166 2 года назад

Thanks for the great tutorial! I know literally nothing about linux or apache and I still got it to work on my raspberry pi thanks to you

@LukePeters 2 года назад

Hey that's awesome! Glad to hear this was helpful :) What does your app do that you want to run it on a Raspberry Pi?

@julienweems6166 2 года назад

@@LukePeters I actually don't have any goals in mind. I just playing with my new toy and using it to learn cool and interesting stuff. I think it's neat that I can communicate with it over the internet no matter where I am.

@LukePeters 2 года назад

@@julienweems6166 Oh okay cool. Playing around with new tech toys is the best 😃 I still don't have a Raspberry Pi despite being curious about them for years. Might have to change that now...

@deimos431 Год назад

Hello, thank you for this video, you saved me because I couldn't upload a server with my python flaskafter watching your tutorial.

@patricktosolini6655 2 года назад

Hi Luke that was an outstanding Tutorial!

@LukePeters 2 года назад

Hi Patrick, thank you! I appreciate the comment :)

@Andyraathi 2 года назад

you are like a god to me i appreciate your hardwork alot🤧🤧 stay posted like these videos💖💖

@LukePeters 2 года назад

Haha, well thank you! I appreciate you taking the time to let me know :)

@bivensrk 2 года назад

First ever time I thumbs up'd a vid.. outstanding tutorial, very detailed!

@LukePeters 2 года назад

Thanks! Glad it was helpful!

@s.b.6683 Год назад

Thank you, this video helped fixing an error in my configuration!

@LukePeters Год назад

Glad to hear it!

@enpassant7358 Год назад

👍The Perfect Tutorial! 👍 I am already comfortable with Apache and virtual domains and just needed a quick run through for hosting Python apps. The only thing that would make it better would be having a guthub repo with your project files. Excellent video, thank you.

@LukePeters Год назад

Glad this was helpful!

@Richard_GIS 2 года назад

The first useful tutorial at all for this usecase! Thy.

@LukePeters 2 года назад

Nice! Thanks for dropping a comment 🤙🏻

@vincenta2600 2 года назад

Thank you so much, you helped me a lot with your video! :)

@LukePeters 2 года назад

Glad to hear that :) Thanks for letting me know!

@kode.com.co. 3 года назад

You are awesome! It finally worked!

@LukePeters 3 года назад

Awesome! Glad to hear that 😃

@justshoby3374 Год назад

Hey luke. Thanks for the video. How did you chnage your terminal color? The colors looks very pleasing! Are you using iterm and omz? What is the theme? 😅

@vijayyajurvedi Год назад

I have centos 7 os there is no ditectory as var/www for apache but httpd service is enabled. Also there is no site enable command to enable it . Please guide.

@soolydooly1234 Год назад

Hi, using old version of linux mint, but for every step I take something goes wrong... why would this be happening? For instance I get pkg_resources cannot be imported, when I've written "pip install setuptools" 100 times

@alialbaalbaki5801 2 года назад

Thank u so much for the video. :)

@LukePeters 2 года назад

You're welcome 🙂

@XChristosK Год назад

Hi, very good tutorial. Everything running fine. I notice that if i change the home.html the content change only of i refresh apache. can you provide a solution to that ? I have already add WSGIScriptReloading On on virtual site but it didnt work. Thanks

@krolik2531 Год назад

Worked, thank you :)

@LukePeters Год назад

Cool :)

@davipires2999 Год назад

I’m havin this error message: AssertionError: You must use exec(open(this_file).read(), {'__file__': this_file})) You know what that can be?

@fahadshaikh9715 11 месяцев назад

How to deploy multiple flask app on single server?

@joaopaulocoelho5401 3 года назад

Hi. Thank you for the video. I'm not sure about the role of flask. So, if I have a html page, couldn't just use apache as a server for this page?

@LukePeters 3 года назад

Hi João, the point of the video is to demonstrate how to deploy a Flask application on Apache. The example Flask app here is VERY basic on purpose.

@adrianrs79 2 года назад

what about if you have sqlalchemy, the way you illustrated the example can be applied to do so? thanks

@LukePeters 2 года назад

Hi Adrianñ, yes, this approach will also work for a Flask app that uses SQLAlchemy. But this video just covers the Flask setup steps, there will be additional database setup/configuration steps depending on the database you're using. Start by double-checking that the database is running, make sure your database connection config is correct in the Flask code, and check your server error logs (for Apache and your database).

@akarlska 2 года назад

Hey, great video. Gonna be super helpful! I´ve been using pyenv to manage virtual envs, is it possible to make this work with pyenv or is pipenv the only way? If possible, could you explain how? Because there is no activate.this file, only a .python_version file that lies in my flask_app folder.

@LukePeters 2 года назад

Hey Trombasso, thanks! I've never used Pyenv myself, but this article seems like it might be helpful: linuxtut.com/en/84f073c463fd1b809521/

@fahadshaikh9715 Год назад

Is it compulsory to make virtual env can we do same thing as root user?

@TheAfmart Год назад

thank you, i need to migrate a flask app running on windows, and look like i need some extra steps

@davidreeves8382 Год назад

Hi Luke, I cannot find the activate_this.py script in my Python virtual environment. I do find the activate under the corresponding bin directory. Any ideas? Thanks David

@volatilnost Год назад

same problem> Din you find the solution?

@GokEnsar Год назад

same here, any ideas?

@jundihafizhul284 2 года назад

Luke Peters, i want ask something, i we change the port in file basic-flask-app.conf (for example 4000) then we test in browser with ip:4000? is that correct?

@LukePeters 2 года назад

Hey Jundi, yes, that is correct 👍🏻 But keep in mind that Apache might not have port 4000 open (or might not be listening on it). It usually has port 80 (http) and 443 (https) open, but you may have to tell Apache to open/listen to port 4000 for it to work. This guide should help: ubiq.co/tech-blog/how-to-change-port-number-in-apache-in-ubuntu/ And if you have a firewall (UFW) running on Apache, you may need to allow your new port: sudo ufw allow 4000

@jundihafizhulhaqqi1369 2 года назад

All right thank you!

@orco3847 2 года назад

I almost wrote a comment "I love you for this incredible tutorial" but that would have been inappropriate... Anyway, REALLY THANKS 🙏🏼 😀

@LukePeters 2 года назад

Haha, either way I appreciate you taking the time to leave a comment 🙂

@robertagilar3920 2 года назад

Hi @Luke Peters, New in to flask/apache/webdevelopment, what is this static folder for? Do I need it for my deploy of flask app?

@LukePeters 2 года назад

Hi Robert, the static folder is a good place to store CSS files, JavaScript files, images, etc. You can name this folder anything you want. You don’t need a static folder to deploy a Flask app. But if your app has static assets (unchanging files), you’ll need a place to put them.

@robertagilar3920 2 года назад

Ok thanks. Last question, I got this to work but the / (root site) is still showing Apache2 Ubuntu Default page. Any idea how I can get rid of the default page?

@LukePeters 2 года назад

@@robertagilar3920 No problem! There's probably still a default VirtualHost config file pointing to "/var/www/html" where there's an "index.html" file created by Apache. Disable that VirtualHost config file - probably something like "sudo a2dissite 000-default.conf", but check what's on your server under /etc/apache2/sites-enabled".

@nikoklemm4709 2 года назад

Hey, have you ever achieved to deploy a flask app with flask-socketio to a server and run it?

@LukePeters 2 года назад

Hey Niko, yes I have, but not in a long time. I don’t remember if it was difficult or not. Maybe I should do a video on this.

@williamdockery9713 2 месяца назад

Thank you for the guide. I've followed it meticulously and the server will not serve WSGI flask page, instead, continually serves the default apache index.html. Any ideas why?

@williamdockery9713 2 месяца назад

Figured it out, deployed this on amazon EC2 ubuntu host, accessing from home. Worked when ServerName in the appname.conf was configured to the "Public IPv4 DNS" of the ec2 instance. Now to figure out the permissions to the virtualenv issue I see below and am experiencing right now.

@williamdockery9713 Месяц назад

figured out the permissions issue, Actually @jars99 did below (Thank you, Thank you, Thank you!) for some reason, on my EC2 ubuntu instance, Apache doesn't like finding your virtual environment files in directories other than /usr (thankfully I followed @jars99 suggestion and it worked first time. i.e., other directories might work, but I wasn't doing any more experimenting to find out) /usr/local/venvs didn't exist at first cd /usr/local sudo mkdir venvs cd venvs sudo cp -R ./ I didn't even change the permissions (left them as root) (@jars99 said he changed them. Mileage might vary.) Next modify your ".wsgi" file to use the new venv. (line 4 in Luke's example, around minute 5:00) activate_this = '/usr/local/venvs//bin/activate_this.py' { example: activate_this = '/usr/local/venvs/flaskapp-m09E3mlH/bin/activate_this.py' } Remember to keep your 'Servername' field in /etc/apache2/sites-available/.conf updated to your AWS instance "Public IPv4 DNS" (go to your AWS console to find it) { example: nano /etc/apache2/sites-available/flask-app.conf ServerName ec2-28-198-124-113.us-east-1.compute.amazonaws.com } and, on that instance, in AWS console: don't forget to update your "Security: Inbound rules" to include a port 80 ingress from your IP (whatsmyip.com or All) access your app by using the AWS public DNS name in your browser: example from above: ec2-28-198-124-113.us-east-1.compute.amazonaws.com (no httpS !!! No S! you didn't configure TLS/SSL, that's 443 and you'll have to find another tutorial for that)

@gabrieleaddis3698 2 года назад

Thanks for the video, I was able to deploy the app on the apache server, however with apache I cannot connect to SQL Server, although the configuration is correct. But if I launch the app from the cmd everything works, does anyone know why?

@LukePeters 2 года назад

Check the error logs! There's a specific error message or error code being stored somewhere, which is a great place to start debugging. Too many possible reasons for a failure to connect.

@adrianrs79 2 года назад

@@LukePeters Same error for me, apparently we should do something to include for example sqlalchemy, it simply does not commit or query anything from the db file

@LukePeters 2 года назад

@@adrianrs79 Did you check your app's error logs? What about the general Apache error logs? You can also implement your own logging within Flask. Follow these steps: snipsave.com/user/lukepeters/snippet/9a7HzD5gyzYxJybWru/ Then you will hopefully see some kind of database errors in the "debug.log" file after trying to load/use your app again.

@msa7202 2 года назад

Hello, great video! The only thing is that I always get an error and in my error.log file it says permission denied for the activate_this.py file path. Do you know how to solve this?

@xiaoranhu1174 2 года назад

getting same error for permission denied, is there any solutions? Have tried to set the directory owner to www-data but no work

@LukePeters 2 года назад

Hey, this probably means that Apache doesn’t have permission to access the activate_this.py file. I would try changing the group that file is in to your Apache user group - and make sure the parent directories have the same group, otherwise Apache won’t be able to get into the folder where that file lives. Example: sudo chgrp -R www-data /var/www/your_app Modify this to match the path to your app’s root directory.

@LukePeters 2 года назад

Hey Xiaoran, see my comment to Msa720 here. You may need to change the user group for the app’s root directory.

@msa7202 2 года назад

@@LukePeters Thanks for the answer, but how can I do that?

@LukePeters 2 года назад

I included the sample code in my comment above.

@timdavies2633 3 года назад

Thanks for the video - got my app up and running on apache in no time! I wonder if I could get your help on something? My app uses the flask function send_from_directory to let the user download a spreadsheet when they click a button. Works fine when I test it locally but I get an permission error (Error 13) on the live server. Permissions on the file are set to 755 and owner is www-data. Not sure what else I need to make it accessible?

@LukePeters 3 года назад

Hey! Glad the tutorial was helpful. Hmm, that's interesting... What user/user group is WSGI/Flask running as? Perhaps the parent directory doesn't have the appropriate permissions on it?

@timdavies2633 3 года назад

@@LukePeters Thanks for the reply. Flask is running as www-data as far as I can tell (i.e. when I change read permissions on other files I'm using it opens them up to flask as expected). Is there an explicit way to check or specify the user Flask runs as though? Pretty sure it's not the parent directory. www-data is the owner and has write permissions for the whole path. The owner of all other files I'm working with is root.

@jasoncasey654 2 года назад

I am having the same issue.

@timdavies2633 2 года назад

@@jasoncasey654 Unfortunately I never solved it for myself - I ended up leaving out the "download a spreadsheet" feature from my website :/

@unblockgames 2 года назад

Yea, I just abandoned the use of the virtual environment. I used the global install of python instead and it works great

@utideptodeingenieriadeapli4293 2 года назад

hi, excelente video, but i have problems in deploy on debian 11 ... yu can help me ??? .. I do not receive any data in the request through post ...

@LukePeters 2 года назад

Thank you! The very first thing you need to do is check the Apache error logs. They should contain more information about what isn’t working. In this video in the .conf file we specified a custom error log path. Check that file for more information. You can also check the default Apache logs for more information: /var/log/apache2/error.log Without more information from an error log and without seeing your code it’s impossible to know why it’s not working.

@utideptodeingenieriadeapli4293 2 года назад

@@LukePeters that's a problem, the error log shows nothing, my api runs fine in development mode and runs in production, but now I don't know if WSGI blocks input data or something like that thanks for answer greetings

@TaylorNelson1 6 месяцев назад

Thanks for the video--why would I do this rather than use gunicorn?

@LukePeters 6 месяцев назад

mod_wsgi works with Apache only (not Nginx) and runs on both Linux and Windows. Gunicorn works with Apache and Nginx but doesn't run on Windows. I haven't used Gunicorn so I don't have real-world experience to compare them to each other, but it seems Gunicorn may be easier to setup and in some scenarios might be more performant. I would say try them both and see which you like better.

@TaylorNelson1 5 месяцев назад

@@LukePeters thanks much for the response! I have since learned that for prod you need to do some good setup steps with Nginx too, so neither is really completely non-trivial--the getting started with gunicorn makes it feel that way.

@joaovictor-dl6ve 2 года назад

Whats the advantage to deploy a flask application with wsgi? Im new in flask…

@LukePeters 2 года назад

WSGI helps tell an Apache web server how to run the Flask app. Without WSGI, Apache wouldn't know what to do with a bunch of Python files.

@parthpandey4631 2 года назад

I am not able to install pyvenv so I have used another way to install dependencies using pip install req.txt rather than using Pipfile.

@LukePeters 2 года назад

Definitely use some kind of virtual environment. It's not a good idea to install Python dependencies (i.e. Flask) on your computer globally with pip. You want to make sure you're inside a virtual environment before installing dependencies. If you don't want to use Pipenv to manage your virtual environment you can use Virtualenv instead: 1. Install Virtualenv on your computer: pip install virtualenv 2. Create a virtual environment: virtualenv venv 3. Then activate the virtual environment: source venv/bin/activate 3.1: If you're on Windows: venv\Scripts\activate 4. Then install dependencies with Pip: pip install flask

@parthpandey4631 2 года назад

@@LukePeters Thank you for your advice, I have used virtualenv. Now I have deployed my web application on Apache Web server, but now accessing the URL it is showing "Forbidden You don't have permission to access this resource", I have applied chmod 777 to all files. Then also the same error is coming. Can you help me with this?

@LukePeters 2 года назад

@@parthpandey4631 Hi Parth, it's going to be very slow trying to guess where the problem is - check your error logs! They should tell you more information about WHICH resource is lacking the proper permissions. The error log for the Flask app is configured in the "basic-flask-app.conf" file (@5:49 in this video): /var/www/basic-flask-app/logs/error.log You can also check your default Apache error log, which should live here: /var/log/apache2/error.log If the server is giving you a big server error when you visit the URL, then the server is logging more details about the error somewhere. Probably in one of these two files.

@parthpandey4631 2 года назад

@@LukePeters Sorry Luke, I have solved the error, thanks for suggesting to look in error.logs

@LukePeters 2 года назад

@@parthpandey4631 No need to apologize! I'm glad looking in the error log helped 😃

@caioathayde6498 2 года назад

Hey Luke, thanks for the great tutorial! I've been able to deploy my website :)) I'm struggling with the error: app called on a post request cannot connect to X server. It runs perfectly on pycharm, but throws this error on the deployed version. I have changed the wsgi user,, exported the app to $PATH but no success. I read every related post on stackoverflow... Would you give me a hint on that? Thanks

@LukePeters 2 года назад

Hey Caio! I'm glad this tutorial was helpful! I did a little research on your error message. Is your Python app doing anything that requires a computer screen/display? Like taking a screenshot, or something else? In Linux, "X" is an application that manages graphics displays and input devices (like mice and keyboards). If your app utilizes the graphics card/display in some way, you may need to configure it to run in some kind of "headless" mode on the production server.

@caioathayde6498 2 года назад

@@LukePeters Thanks for checking up on that. Yes, the flask app provides a web interface for a system that analyzes biomedical images. With user input, the flask app calls another app that pre-processes, infers (DL) and post-processes the uploaded raw image. This second app needs access to the display system (X-server). I know that might raise security issues, but that is the best way I have so far. I'm adding other security layers to limit the risks. The way I sorted that out was adding the line "os.environ["DISPLAY"] = ":1"" to the wsgi file (my $DISPLAY is :1) and it worked great. I'm now working on a dockerized xvfb solution to that, which I guess can reduce the risk a little more. Great channel, thanks again!

@LukePeters 2 года назад

@@caioathayde6498 Glad you found a solution that works for your use case!

@filippo1984 2 года назад

hi, nice tutorial very detailed, but i have a strange issue on the wsgi file, i can't understand what is wrong apparently the istrucions "with open(activate_this) as file_: exec(file_.read(), dict(__file__=activate_this))" generate an error and i tried many solutions but non of them works

@LukePeters 2 года назад

Hey Filippo, what error do they generate? That's the most important piece of information for debugging! :)

@filippo1984 2 года назад

@@LukePeters oh yeah sorry UnicodeDecodeError: 'ascii' codec can't decode byte 0xc2 in position 27524: ordinal not in range(128) mod_wsgi (pid=7101): Target WSGI script '/var/www/HomeWebServer/HomeWebServer.wsgi' cannot be loaded as Python module. mod_wsgi (pid=7101): Exception occurred processing WSGI script '/var/www/HomeWebServer/HomeWebServer.wsgi'. Traceback (most recent call last): File "/var/www/HomeWebServer/HomeWebServer.wsgi", line 8, in ù exec(file_.read(), dict(__file__=activate_this)) File "/usr/lib/python3.5/encodings/ascii.py", line 26, in decode return codecs.ascii_decode(input, self.errors)[0] UnicodeDecodeError: 'ascii' codec can't decode byte 0xc2 in position 27524: ordinal not in range(128) this is what i get ty

@LukePeters 2 года назад

@@filippo1984 That's more like it! This error means the app is trying to process some character that isn't Unicode-friendly. See where it mentions "0xc2"? That's binary code for this character: Â

@filippo1984 2 года назад

@@LukePeters thank you i will check and report to you the result, but how can i find it if is on the database or some others file?

@LukePeters 2 года назад

@@filippo1984 Do you have a database? Look at the data inside your database. Are you uploading/processing files with the app? Look in those files. If you don't have either, then it's probably just an accidental character in your code. But do some research on the subject. I can't help you find it in your code, but you can read up about the error and diagnose the problem. Take it step by step. Disable parts of the app until it works, then reenable one by one until it breaks, then you'll know which part contains the problem.

@ghomar_baz 11 месяцев назад

best

@GokEnsar Год назад

how can we set os.environ variables?

@LukePeters Год назад

By typing 'os.environ' like you just did 😄 import os os.environ['username'] = 'GokEnsar'

@GokEnsar Год назад

@@LukePeters No, i didn't mean that, like i want to set environ variables not in code but somewhere like .env file

@LukePeters Год назад

@@GokEnsar Ah gotcha, this article should be what you're looking for: dev.to/sasicodes/flask-and-env-22am

@GokEnsar Год назад

@@LukePeters thank you.

@LukePeters Год назад

@@GokEnsar For sure 👍🏻

@lucasbarbary 3 года назад

generated an error because apache does not have permission to enable virtualenv Has anyone had this problem?

@LukePeters 2 года назад

Hey Lucas, can you share the exact error message you're getting?

@warhawk3895 2 года назад

@@LukePeters Hay Luke I was wondering if you have found the answer to this question. I seem to be having the same issue and not sure why. The issue seems to be that open can not access the virtual environment activate_this.py file. Thanks and amazing video :)

@fsddffsfs2916 2 года назад

Same problem for me as well also tried changing permissions with chmod but it already have permission i guess

@LukePeters 2 года назад

@@warhawk3895 Hey! I can't help without a specific error message. There are many possible causes, many of them personal environment configuration issues which can be different for everyone.

@user-ry8co7ns8h 2 года назад

Try to change WSGIDaemonProcess user and group to user and group of what u create venv in .conf file

@leniedor733 2 года назад

4:01 Why hardcode the path when we can make a "pwd" from the the very app?

@LukePeters 2 года назад

You can use any method you’d like to get the correct path in there. I used an absolute path for simplicity.

@fahadshaikh9715 Год назад

I got internal server error

@LukePeters Год назад

So… Did you read your server logs then?

@fahadshaikh9715 Год назад

@@LukePeters I haven't use virtual env will it be fine? And also i am doing this as root user it that okay ? Will it still work?

@fahadshaikh9715 Год назад

@@LukePeters #!/usr/bin/python3 import sys import logging logging.basicConfig(stream=sys.stderr) sys.path.insert(0,"/var/www/cwh/" from cwh import app as application application.secret_key = 'Add-secret' i used this code in wsgi file

@LukePeters Год назад

@@fahadshaikh9715 You don’t need to use a virtual environment if you a don’t want to. And root user isn’t an amazing idea for security, but it will totally work.

@user-br9sz4jn5k Год назад

Wow, why did you delete my comments? What is my wrong? I am very grateful to you for the video...

@LukePeters Год назад

I didn't delete anything...

@sulavadhikari5843 2 года назад

this makes me think machine learning is easier

@LukePeters 2 года назад

Hey Sulav, what do you mean? Did this video make sense?

@chad3328 2 года назад

I just get a 404 no matter what. ugh

@LukePeters 2 года назад

Sorry to hear that! I can't help with such little information, though 😅 Look at your APACHE ERROR LOGS! There's a clue somewhere. It's not just silently failing.

@sudeshkumar8377 2 года назад

I was able to install everything without any errors. I am facing some issue after starting the apache server and trying to access the server from chrome. Am getting two errors in the error log: 1] PermissionError: [Errno 13] Permission denied: '/root/.local/share/virtualenvs/OnlineLearner-uZdfk3kh/bin/activate_this.py' 2] Target WSGI script '/var/www/OnlineLearner/app.wsgi' cannot be loaded as Python module. Please help me out Luke. Thanks in advance!!

@LukePeters 2 года назад

Hey Sudesh! Can you check whether Apache has permission to read/write the virtualenvs/ directory? On Ubuntu/Debian servers, Apache runs as the user "www-data" under the group "www-data" by default. In this case, you might do something like this: sudo chown -R www-data /root/.local/share/virtualenvs Or you could just change the directory's group to the same as Apache: sudo chgrp -R www-data /root/.local/share/virtualenvs Or you could run Apache under your own username (or whichever username CURRENTLY owns the virtualenvs/ directory). Check out this article to learn how to change which user/group Apache runs as: www.simplified.guide/apache/change-user-and-group And to find out which user CURRENTLY owns the virtualenvs/ directory do this: ls -ld /root/.local/share/virtualenvs I know that's a lot, but I hope it helps!

@delvinnj7941 Год назад

"Cannot access directory '/var/www/html/logs/' for error log of vhost defined at /etc/apache2/sites-enabled/basic-flask-app.conf:1" I got this king for error while configtest Bro can you give a solution ???

@LukePeters Год назад

It looks like Apache cannot access that directory. If the directory exists, it's probably a permissions error. Find out what user/group Apache runs as by looking at the /etc/apache2/envvars file. They're listed in there as APACHE_RUN_USER and APACHE_RUN_GROUP. Then make sure /var/www/html/logs is owned by the same user or group. If the user is 'www-data', do this: 'sudo chown www-data /var/www/html/logs -R'

@schlingelgen 2 года назад

I am trying to run a Flask app on my raspberry with apache. Because this app sometimes needs GPIO-access, I can't run it without sudo. How can I tell apache to sudo run it? Or is there a better way? I also run into some problems when accessing the machine with its hostname instead of the IP. I then get the "Apache2 Debian Default Page" - unless I change line 4 in the .conf file. With WSGIScriptAlias /{path} /var/www/basic-flask-app/app.wsgi the error doesn't occurs. But then I have to call {hostname}.local/{path} instead of just {hostname}.local Do you have any idea how to solve this? I am working with a Raspberry Pi Zero as I mentioned above Thanks for the nice tutorial though!

@schlingelgen 2 года назад

Deleting/moving/renaming the /var/www/html/index.html already did the trick, but im not sure if that's the best solution

@parthpandey4631 2 года назад

Hi Luke, I am getting Forbidden You don't have permission to access this resource. Error looks like- Tue Apr 26 06:17:49.494203 2022] [autoindex:error] [pid 313:tid 140507386562304] [client 125.16.206.250:64225] AH01276: Cannot serve directory /var/www/smap/docgen/: No matching DirectoryIndex (index.html,index.htm,index.shtml) found, and server-generated directory index forbidden by Options directive. Thanks in advance

@LukePeters 2 года назад

Hey Parth, have you found an answer to this problem? If so, would you mind sharing here for others? I've never run into this particular error while deploying Flask apps on Apache, but I've just done a bit of Google searching about it and I'm really not sure what it could be without looking at your app and server config.