Deploy Flask Application on Ubuntu VPS using Nginx

[@mustafahajhamoud2077]

thank you very much! I've been trying to do this for 3 days now, and your tutorial is the only one that worked for me.

[@vat1980]

Really want to say thank you so much. Many tutorials end up in error but this one is spot on! Got my Flask app running on AWS ES2 in less than 15 mins. Great video.

[@cfuendev]

The constant "..Need to sudo before this" is very relatable

[@nicholashooper9538]

Been banging my head against the wall from lots of other tutorials, this was the only one to work for me all the way through, and I have quite a large/complex Flask App. Thank you so much

[@devguyahnaf]

Lmao Head banging ain't that uncommon, especially for developers Thanks a lot :)

[@perilous105]

I don't really comment on many videos, but this was a brilliant tutorial. I've been looking at so many tutorials, but there was always an error with them, if it wasn't nginx it was apache2. Thank you for the quick and clear explanation. Keep doing videos like these!

[@devguyahnaf]

Thanks a lot for your kind words. I really appreciate them :) Also, one thing I would like you to know is that Apache is a threaded server, which means it is prone to DDOS and DOS attacks. But Nginx on the other hand is an asynchronous web server and reverse proxy, so it is not as vulnerable as Apache, and it is also very easy to set up.

[@perilous105]

@@devguyahnaf That's great to know, glad I made the right choice!

[@kushagramishra4795]

I'll plus one this , great video !!!

[@notlilmond]

Very underrated channel. I've searched many tutorials and ended up to this channel multiple times. I hope you keep going with making tutorials bro, great things are waiting for you out there! And you really help a lot of people with your work. Much appreciated! ♥💯

[@trueindian03]

Thankyou so much for the video, I literally referred many youtube videos and articles none of them help me much, but your tutorial help me.

[@samiam.402]

Brooooooo!!! This is the only tutorial I could find to show how to keep the gunicorn or flask app alive after exiting the ssh connection!!!! Thanks a bunch.

[@FelipeCatao]

friend without words, you helped me to climb my flask application that was 3 weeks trying without success, congratulations by the tutorial clear and direct

[@devguyahnaf]

You're welcome, glad to hear that!

[@ronmercier9841]

Thank you for this tutorial, it was super helpful. I was able to get my fullstack app running on my Linode server with no issue. Much appreciated and keep up the good work!

[@MadZorf]

Man, as others have also mentioned. Your tutorial saved my project! Thank you so much!!!

[@AdhithyaRamesh-os2gy]

This was awesomee, i have a big flask app with D.L models and every other tutorial used github which doesn't allow files bigger than 25MB. This was seriously f*ckin awesome.

[@kawsarlog]

My friend you just did an outstanding job, not only the tutorial you also explained a lot of basic stuff!

[@devguyahnaf]

Thank you, glad it was helpful

[@phi6934]

What an amazing tutorial, I learned a ton of useful stuff, thanks!

[@marconeramos1194]

Thank you! This tutorial is simply the best I found! Saved my week!

[@ryu8777]

Best of the best! Btw for me gunicorn3 can't be imstalled, but gunicorn works just great (ubuntu 20.04). Many many thanks DevGuyAhnaf!

[@dev_ritchie]

Excactly what i was searching for 🎉🎉

[@walkerlasbury9315]

So helpfull! Best video out there!

[@olumorsotnas]

Very good explanation my friend. This video saved me :)

[@EnglishRain]

Wow 13:45 is a GREAT tip, thank you so much!

[@dreUmairAli]

i done everythin and unicorn3 is also running on port 8000 but when i go to my main ip it is showing me nginx

[@MyStockz]

What a legend! Super clear! No bulls*it in between.

[@castleold19]

I can't save reverse proxy, it's showing file or directory doesn't exist.

[@AntonioGargiulodragossido]

This is the only guide that has made me run Python on server so far. for some reason before running Gunicorn I need to reboot the server. if i want to add a second app?

[@guipe7712]

Thanks Friend, excellent video. I learn a lot. Works perfectly in hostinger vps. Thanks a lot

[@niksushko9333]

Thx bro, very useful for me!

[@ero-sennin6623]

thank you bro, u deserve more subscribers.

[@devguyahnaf]

no probs pervy sage

[@gusinthecloud]

You made the best video!!! Thank you

[@alaminbijoy1027]

Great concise tutorial bro Take love

[@jerrywang3225]

This is really helpful. Thanks

[@leomeror]

This is very helpful! Well made! :)

[@biskweet816]

Excellent video. I would love to see a tutorial on how to setup TLS/SSL with this config.

[@nicoxvxv]

So i followed the tutorial, but i have a little problem. After running "gunicorn --workers=3 app:app" the main ip of my server is showing "Bad Gateway" and i dont know what i did wrong.

[@devguyahnaf]

The reverse proxy (Nginx in this case) is probably trying to find the gunicorn server on a specified port, but the server is not on that port. By default, the gunicorn server listens on port 8000, so your Nginx proxy would have to forward the requests to 127.0.0.1:8000. You would have the config sorta like this: location / { proxy_pass 127.0.0.1:8000; } This will load balance all the requests sent to your nginx server (through the main IP) and forward it to the gunicorn server so that people can access your flask application

[@nicoxvxv]

@@devguyahnaf fixed.

[@Notus29]

what if your using a docker container

[@timberlee9176]

Many thanks for you bro; it's very helpful.

[@julian3154]

Great video, thank you!

[@samjiman]

Good video, thank you.

[@user-yn2me7in5n]

Awesome tutorial, thanks!

[@odepleted]

how do you get dark theme in filezilla?

[@lambuth]

Thank you for this. So much.

[@GabrielPvPMelhor]

PERFECT, Thanks!

[@coldluck7366]

legend

[@AdrienZier]

Great tutorial! Just wondering what's the use of the 2 lines under proxy_pass? the header forwarding. what does that achieve? many thanks!!

[@devguyahnaf]

Sorry for the late reply. All it does is provide the Flask app with some headers that contain the actual client information. This might be important for IP logging, or other analytical stuff in your application, since Flask doesn't directly get the client's info as it gets proxied by Nginx

[@mohamed-hm8pn]

thank you so much ....amazing work best video on youtube for this tut

[@mohamed-hm8pn]

it wotk perfect on google cloud platform too

[@devguyahnaf]

@@mohamed-hm8pn Yes, it was intended for every VPS running Ubuntu

[@karthik-pillai]

BEST VIDEO!

[@vinter_man]

totally helpful, thx!!!

[@moshiurrahman1454]

Really greate video

[@dw4258]

Thanks, got my app working! It's on port 8050 though which is strange... (Added later) the call to gunicorn was app:server and not app:app

[@96NewsHDofficial]

broo what if i do 443 beside 80 for ssl will it work?

[@devguyahnaf]

Only if you have proper SSL certification/configuration available for NGINX.

[@jakubkrajewski8249]

how to add multiple urls?

[@syedmujahid9860]

is steps same for deployment in aws ,hope for quick reply

[@devguyahnaf]

On an AWS EC2, should be same. Just configure elastic IP and proper ports

[@eliasoliveira292]

Thanks man!!!

[@AabhusanAryalOfficial]

Thanks a lot!

[@PPRASHAR25]

helped me at last moment..

[@prasadnijai2820]

I'm using vultr to host my website. And everything till last worked fine.. but gunicorn --workers=3 app:app is not working for me. It is not fetching site even by local host

[@devguyahnaf]

Why are you using localhost though? Use the VPS's IP Also, make sure the host is 0.0.0.0 Bind gunicorn to 0.0.0.0 as well

[@prasadnijai2820]

@@devguyahnaf So What changes i have to do in sites-enabled/flask_app ? Do I have to replace proxy_pass IP ?

[@devguyahnaf]

​@@prasadnijai2820 Nope. Try adding a bind argument to gunicorn "--bind=0.0.0.0"

[@emotional_stuff]

nice one

[@divyar5238]

Thanks, I get a "502 Bad Gateway nginx/1.18.0 (Ubuntu)" error. Do you know why ?

[@devguyahnaf]

Nginx is trying to proxy the request to the flask server. Are you sure that the flask app is running?

[@divyar5238]

Yes, flask app runs fine in local host

[@devguyahnaf]

@@divyar5238 You need to keep it running in the background, so that Nginx can reverse proxy it.

[@billycherry7028]

@@devguyahnaf Hey, I'm having the same problem. I get that same error even when the app is running

[@qrythe]

U helped me so much

[@ironF5]

it shows E: Package 'gunicorn3' has no installation candidate

[@ryu8777]

same for me, I just installed gunicorn and it works

[@KingMarques]

Hey DevGuy, how are you? ' Dev, i'm trying to deploy a flask api on a Ubuntu Serve, but this api must bem deployed not in a Cloud, but inside of my company Server. I can do this task with this tutorial? We are using ubuntu 22.04 Server, Anaconda Python 3.9. Thank you very much!

[@KingMarques]

Hey Dev, i'm here again, but now it is another question about "gunicorn3 --workers=3 file:app". In my situation, a have a function Main and my app flask is inside this Function Main, and when i try to call the App with gunicorn, the server return for me saying I'm trying to pass two parameters when Main requires 0. How can I refer this app flask inside the Main who is inside the file?

[@ha2709]

Thank you

[@ironF5]

now tell us how to dockerize this? as ECR and lightsail has containers... that runs dockerized images only

[@devguyahnaf]

This tutorial was specifically for VPS services such as AWS EC2, DO Droplets, GCP VMs, etc. But for container runtimes such as AWS ECR, you can take a look at this video: kzbin.info/www/bejne/naPXm556nZp3o7M Just skip the react part and only watch Flask

[@ironF5]

@@devguyahnaf can u show how to deploy a dockerized flask app on AWS sagemaker and lightsail container that can handle 5-10 requests at once meaning use of load balancer of some sort ( i have actually completed the lightsail deployment step) ... can u also tell the difference between 3 workers of gunicorn and loadbalancer use in deployed app..

[@inferlight]

Sheeeeesh

[@andreaskweyo5582]

Wow, say no more

[@DT-hb3zu]

Are we just gonna ignore that his filezilla is dark mode?

[@devguyahnaf]

Yes. :)

[@DT-hb3zu]

@@devguyahnaf I love the tutorial my guy, got set up and running from it. Now, let's get back to dark mode FZ 😂🤣 (Possible new tutorial?) **FZ has dark mode?**

[@devguyahnaf]

@@DT-hb3zu You see, I had dark mode enabled on my desktop environment (Cinnamon) back when I used Linux Mint. So Filezilla for Linux basically uses the QT/GTK theme that's set by the DE, and that's how I got dark mode

[@DT-hb3zu]

@@devguyahnaf gaaahh. I figured. I can get it on my Debian, but not my windows. And all "dark mode" on desktop look like poo. Thank you! You have very nice content. Straight to the point, and (maybe not intentional) show some common mistakes. Brilliant

[@karasiq69]

That helps a lot, thank you

[@Yathavpriyan]

great one. worked well. thanks !

[@codepunk77]

thanks a lot