nginx configuration

nginx: Reverse Proxy

#

 server {
      listen 80;
      
      server_name example2.com www.example2.com xyz.example.com;

      location / {
        proxy_set_header HOST $host;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
         proxy_pass http://localhost:3000
      }
  }
  https://www.digitalocean.com/community/tutorials/understanding-nginx-http-proxying-load-balancing-buffering-and-caching

nginx: Serve static content

Step 1:- Install nginx.

  sudo apt-get update
  sudo apt-get install nginx

Step 2:- Create folder to store content which will be serverd by nginx.

  sudo mkdir -p ~/example1.com/html    // -p for creating multiple parents
  sudo mkdir -p ~/example2.com/html

Step 3:- Cretae and update index.html files with dummy content.

  nano ~/example1.com/html/index.html
  nano ~/example2.com/html/index.html

Step 4:- Create server configuration file.

  sudo cp /etc/nginx/sites-available/default /etc/nginx/sites-available/example1.com
  sudo cp /etc/nginx/sites-available/default /etc/nginx/sites-available/example2.com

 #It is advisable to create separate config file for each ste
 
 Step 5:- Open config file.

  sudo nano /etc/nginx/sites-available/example1.com

  server {
      listen 80 default_server;
      listen [::]:80 default_server ipv6only=on;

      root ~/example1.com/html;
      index index.html index.htm;

      server_name example1.com www.example1.com;    // domain names separated by space

      location / {
          try_files $uri $uri/ =404;                   // for angular2+ => try_files $uri $uri/ /index.html;
      }
  }

Step 6:- Enable config file's configuration(symbolic link)

  sudo ln -s /etc/nginx/sites-available/example1.com /etc/nginx/sites-enabled/
  sudo ln -s /etc/nginx/sites-available/example2.com /etc/nginx/sites-enabled/

  #nginx uses server configuration from sites-enabled directory on startup

Step 7:- Disable default configuration

  sudo rm /etc/nginx/sites-enabled/default

Step 8:- Restart nginx
  ## before restarting nginx run config test to be sure.
  sudo nginx -t
  sudo service nginx restart (or sudo systemctl restart nginx )
  
Step 8:- setup hosts(optional)

 sudo nano /etc/hosts
 
  127.0.0.1   localhost
  public.ip  example1.com
  public.ip  example2.com