How To Install Nginx on Ubuntu

Please follow complete documentation from this link.
https://www.digitalocean.com/community/tutorials/how-to-install-nginx-on-ubuntu-20-04

Step 1 – Installing Nginx

sudo apt update
sudo apt install nginx

Step 2 – Adjusting the Firewall

sudo ufw app list
sudo ufw allow 'Nginx HTTP'
sudo ufw status

Step 3 – Checking your Web Server

systemctl status nginx
http://your_server_ip

Step 4 – Managing the Nginx Process

To stop your web server, type:

sudo systemctl stop nginx
 
To start the web server when it is stopped, type:

sudo systemctl start nginx
 
To stop and then start the service again, type:

sudo systemctl restart nginx
 
If you are only making configuration changes, Nginx can often reload without dropping connections. To do this, type:

sudo systemctl reload nginx
 
By default, Nginx is configured to start automatically when the server boots. If this is not what you want, you can disable this behavior by typing:

sudo systemctl disable nginx
 
To re-enable the service to start up at boot, you can type:

sudo systemctl enable nginx

Step 5 – Setting Up Server Blocks (Recommended)

sudo mkdir -p /var/www/your_domain/html
sudo chown -R $USER:$USER /var/www/your_domain/html
sudo chmod -R 755 /var/www/your_domain
nano /var/www/your_domain/html/index.html

sudo nano /etc/nginx/sites-available/your_domain
server {
        listen 80;
        listen [::]:80;

        root /var/www/your_domain/html;
        index index.html index.htm index.nginx-debian.html;

        server_name your_domain www.your_domain;

        location / {
                try_files $uri $uri/ =404;
        }
}

sudo ln -s /etc/nginx/sites-available/your_domain /etc/nginx/sites-enabled/


sudo nano /etc/nginx/nginx.conf

...
http {
    ...
    server_names_hash_bucket_size 64;
    ...
}
...

sudo nginx -t
sudo systemctl restart nginx