Set up nginx as a reverse proxy

With java spring boot it’s easy the write a web application. Standard this web application will run on port 8080. On GNU/Linux, ports below 1024 are priviliged ports, so a normal user can’t run a web application on ports below 1024.

So, I’ve set up nginx as a reverse proxy to make those web applications available on port 80.

How?

apt install nginx

edit /etc/nginx/sites-available/default

server {
 listen 80 default;
 location / {
     proxy_set_header   X-Real-IP $remote_addr;
     proxy_set_header   Host      $http_host;
     proxy_pass         http://127.0.0.1:8080;
 }
}