ARTICLE AD BOX
I am running a flask server on AWS EC2 instance. AWS EC2 instance means a computer on AWS. I use this command to run the server gunicorn --bind 0.0.0.0:5000 app:app. I have set up nginx as a reverse proxy no the same EC2 instance. My EC2 instance is running Ubuntu 24.04.3 LTS.
I get a 404 Not Found Error when I make a post request using https://www.example.com/processing route. I do not get 404 Not Found when I make a get request to https://www.example.com. I own the www.example.com domain. what should I do so that I do not 404 Not Found while making post request? I have tried many solutions from stackoverflow but none have solved my problem.
this is my code in app.py
from flask import Flask, request, jsonify from PIL import Image import base64 import io from datetime import timedelta from flask import make_response, request, current_app, send_file from functools import update_wrapper from flask_cors import CORS, cross_origin app = Flask(__name__) CORS(app) @app.route("/") def hello(): return "Hello, World!" @app.route('/processing', methods=['POST','OPTIONS']) @cross_origin() def process(): print(request.files) file = request.files['image'] img = Image.open(file.stream) data = file.stream.read() data = base64.b64encode(data).decode() return jsonify({ 'msg': 'success', 'size': [img.width, img.height], 'format': img.format, 'img': data })I have added the following lines to the nginx config file
location / { # First attempt to serve request as file, then # as directory, then fall back to displaying a 404. proxy_pass http://public-ip-of-ec2-instance:5000/; proxy_set_header Host $host; proxy_set_header X-Forwarded-For $remote_addr; try_files $uri $uri/ =404; } location /processing { proxy_pass http://public-ip-of-ec2-instance:5000/; proxy_set_header Host $host; proxy_set_header X-Forwarded-For $remote_addr; try_files $uri $uri/ =404; # OR # try_files $uri $uri/ @backend; }The following is my content in nginx config file present at /etc/nginx/sites-available/default .
## # You should look at the following URL's in order to grasp a solid understanding # of Nginx configuration files in order to fully unleash the power of Nginx. # https://www.nginx.com/resources/wiki/start/ # https://www.nginx.com/resources/wiki/start/topics/tutorials/config_pitfalls/ # https://wiki.debian.org/Nginx/DirectoryStructure # # In most cases, administrators will remove this file from sites-enabled/ and # leave it as reference inside of sites-available where it will continue to be # updated by the nginx packaging team. # # This file will automatically load configuration files provided by other # applications, such as Drupal or Wordpress. These applications will be made # available underneath a path with that package name, such as /drupal8. # # Please see /usr/share/doc/nginx-doc/examples/ for more detailed examples. ## # Default server configuration # server { listen 80 default_server; listen [::]:80 default_server; # SSL configuration # # listen 443 ssl default_server; # listen [::]:443 ssl default_server; # # Note: You should disable gzip for SSL traffic. # See: https://bugs.debian.org/773332 # # Read up on ssl_ciphers to ensure a secure configuration. # See: https://bugs.debian.org/765782 # # Self signed certs generated by the ssl-cert package # Don't use them in a production server! # # include snippets/snakeoil.conf; root /var/www/html; # Add index.php to the list if you are using PHP index index.html index.htm index.nginx-debian.html; server_name _; location / { # First attempt to serve request as file, then # as directory, then fall back to displaying a 404. try_files $uri $uri/ =404; } # pass PHP scripts to FastCGI server # #location ~ \.php$ { # include snippets/fastcgi-php.conf; # # # With php-fpm (or other unix sockets): # fastcgi_pass unix:/run/php/php7.4-fpm.sock; # # With php-cgi (or other tcp sockets): # fastcgi_pass 127.0.0.1:9000; #} # deny access to .htaccess files, if Apache's document root # concurs with nginx's one # #location ~ /\.ht { # deny all; #} } # Virtual Host configuration for example.com # # You can move that to a different file under sites-available/ and symlink that # to sites-enabled/ to enable it. # #server { # listen 80; # listen [::]:80; # # server_name example.com; # # root /var/www/example.com; # index index.html; # # location / { # try_files $uri $uri/ =404; # } #} server { # SSL configuration # # listen 443 ssl default_server; # listen [::]:443 ssl default_server; # # Note: You should disable gzip for SSL traffic. # See: https://bugs.debian.org/773332 # # Read up on ssl_ciphers to ensure a secure configuration. # See: https://bugs.debian.org/765782 # # Self signed certs generated by the ssl-cert package # Don't use them in a production server! # # include snippets/snakeoil.conf; root /var/www/html; # Add index.php to the list if you are using PHP index index.html index.htm index.nginx-debian.html; server_name www.example.com; # managed by Certbot location / { # First attempt to serve request as file, then # as directory, then fall back to displaying a 404. proxy_pass http://public-ip-of-ec2-instance:5000/; proxy_set_header Host $host; proxy_set_header X-Forwarded-For $remote_addr; try_files $uri $uri/ =404; } location /processing { proxy_pass http://public-ip-of-ec2-instance:5000/; proxy_set_header Host $host; proxy_set_header X-Forwarded-For $remote_addr; try_files $uri $uri/ =404; # OR # try_files $uri $uri/ @backend; } # pass PHP scripts to FastCGI server # #location ~ \.php$ { # include snippets/fastcgi-php.conf; # # # With php-fpm (or other unix sockets): # fastcgi_pass unix:/run/php/php7.4-fpm.sock; # # With php-cgi (or other tcp sockets): # fastcgi_pass 127.0.0.1:9000; #} # deny access to .htaccess files, if Apache's document root # concurs with nginx's one # #location ~ /\.ht { # deny all; #} listen [::]:443 ssl ipv6only=on; # managed by Certbot listen 443 ssl; # managed by Certbot ssl_certificate /etc/letsencrypt/live/www.example.com/fullchain.pem; # managed by Certbot ssl_certificate_key /etc/letsencrypt/live/www.example.com/privkey.pem; # managed by Certbot include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot } server { if ($host = www.example.com) { return 301 https://$host$request_uri; } # managed by Certbot listen 80 ; listen [::]:80 ; server_name www.example.com; return 404; # managed by Certbot }