Setup SSL/TLS using certbot with NGINX

add-apt-repository ppa:certbot/certbot

apt-get update

apt-get install python-certbot-nginx

certbot --nginx -d xyz.com -d www.xyz.com

certbot certonly --manual -d '*.xyz.com'

apt-get install nginx -y

user www-data;
worker_processes auto;
pid /run/nginx.pid;
include /etc/nginx/modules-enabled/*.conf;

events {
	worker_connections 768;
	# multi_accept on;
}

http {

	##
	# Basic Settings
	##
	map $http_upgrade $connection_upgrade {
        default upgrade;
        '' close;
	}
	sendfile on;
	tcp_nopush on;
	tcp_nodelay on;
	keepalive_timeout 65;
	types_hash_max_size 2048;
	# server_tokens off;

	# server_names_hash_bucket_size 64;
	# server_name_in_redirect off;

	include /etc/nginx/mime.types;
	default_type application/octet-stream;

	##
	# SSL Settings
	##

	ssl_protocols TLSv1.2 TLSv1.3;
	ssl_prefer_server_ciphers on;

	##
	# Logging Settings
	##

	access_log /var/log/nginx/access.log;
	error_log /var/log/nginx/error.log;

	##
	# Gzip Settings
	##

	gzip on;

	include /etc/nginx/conf.d/*.conf;
}

server {
    listen 443 ssl;
    add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;

    # RSA certificate
    ssl_certificate  /etc/letsencrypt/live/xyz.com/fullchain.pem; # managed by Certbot
    ssl_certificate_key /etc/letsencrypt/live/xyz.com/privkey.pem; # managed by Certbot

    # Redirect non-https traffic to https
    if ($scheme != "https") {
        return 301 https://$host$request_uri;
   }
    server_name domain.xyz.com;
    root  /usr/share/nginx/html/;

    # For basic authenticaiton
    location / {
        auth_basic "Restricted Area";
        auth_basic_user_file /etc/nginx/.htpasswd;
    }
}

server {
    listen 443 ssl;
    add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;

    # RSA certificate
    ssl_certificate  /etc/letsencrypt/live/xyz.com/fullchain.pem; # managed by Certbot
    ssl_certificate_key /etc/letsencrypt/live/xyz.com/privkey.pem; # managed by Certbot

    # Redirect non-https traffic to https
    if ($scheme != "https") {
        return 301 https://$host$request_uri;
   }
   keepalive_timeout 5;
   client_max_body_size 10M;
   server_name domain.xyz.com;
   location / {
    add_header X-Served-By "My Servlet";
    add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;
    auth_basic "Restricted Area";
    auth_basic_user_file /etc/nginx/.htpasswd;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection $connection_upgrade;
    proxy_pass http://127.0.0.1:3000;
  }

}

sudo nginx -t && sudo nginx -s reload