example-ssl.conf

# /etc/nginx/snippets/example-ssl.conf

ssl_certificate /etc/letsencrypt/live/example.com/fullchain.pem;     # Server certificate + CA Certificate
ssl_certificate_key /etc/letsencrypt/live/example.com/privkey.pem;   # Private key
ssl_trusted_certificate /etc/letsencrypt/live/example.com/chain.pem; # CA Certificate

example.com.conf

# /etc/nginx/sites-available/example.com.conf

upstream puma_example_production { 
  server unix:/home/example/production/tmp/puma.sock fail_timeout=0;
}

server {
  listen 80;
  listen [::]:80;
  listen 443 http2 ssl;
  listen [::]:443 http2 ssl;

  include snippets/example-ssl.conf;

  client_max_body_size 4G;
  keepalive_timeout 10;

  error_page 500 502 504 /500.html;
  error_page 503 @503;

  server_name example.com;
  root /home/example/production/current/public;
  try_files $uri/index.html $uri @puma_example_production;

  location @puma_example_production {
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header Host $http_host;
    proxy_set_header X-Forwarded-Proto $scheme;

    proxy_redirect off;
    proxy_pass http://puma_example_production;

    gzip on;
  }

  location ^~ /assets/ {
    gzip_static on;
    expires max;
    add_header Cache-Control public;
    add_header Access-Control-Allow-Origin https://example.com;
  }

  # refile attachments cache
  location ^~ /attachments/ {
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header Host $http_host;
    proxy_set_header X-Forwarded-Proto $scheme;

    proxy_redirect off;
    proxy_pass http://puma_example_production;

    proxy_cache ATTACHMENTS;
    proxy_cache_valid 200 1y;

    expires max;
    add_header Cache-Control public;
  }

  location = /50x.html {
    root html;
  }

  location = /404.html {
    root html;
  }

  location @503 {
    error_page 405 = /system/maintenance.html;
    if (-f $document_root/system/maintenance.html) {
      rewrite ^(.*)$ /system/maintenance.html break;
    }
    rewrite ^(.*)$ /503.html break;
  }

  if (-f $document_root/system/maintenance.html) {
    return 503;
  }
}

server {
  listen 80;
  listen [::]:80;
  listen 443 http2 ssl;
  listen [::]:443 http2 ssl;
  server_name www.example.com 198.51.100.1;
  return 301 https://example.com$request_uri;
  include snippets/example-ssl.conf;
}

LICENSE.md

To the extent possible under law, Petko Bordjukov has waived all copyright and related or neighboring rights to this nginx ssl configuration.

This work is published from: Bulgaria.

nginx.conf

user www-data;
worker_processes auto;
pid /run/nginx.pid;

events {
	worker_connections 768;
	# multi_accept on;
}

http {

	##
	# Basic Settings
	##

	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 TLSv1.1 TLSv1.2; # Dropping SSLv3, ref: POODLE
	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;
	gzip_disable "msie6";

	# gzip_vary on;
	# gzip_proxied any;
	# gzip_comp_level 6;
	# gzip_buffers 16 8k;
	# gzip_http_version 1.1;
	# gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;

	##
	# Virtual Host Configs
	##

	include /etc/nginx/conf.d/*.conf;
	include /etc/nginx/sites-enabled/*;
}


#mail {
#	# See sample authentication script at:
#	# http://wiki.nginx.org/ImapAuthenticateWithApachePhpScript
# 
#	# auth_http localhost/auth.php;
#	# pop3_capabilities "TOP" "USER";
#	# imap_capabilities "IMAP4rev1" "UIDPLUS";
# 
#	server {
#		listen     localhost:110;
#		protocol   pop3;
#		proxy      on;
#	}
# 
#	server {
#		listen     localhost:143;
#		protocol   imap;
#		proxy      on;
#	}
#}

ssl.conf

# /etc/nginx/conf.d/ssl.conf

ssl_dhparam /etc/ssl/dhparam.pem; # openssl dhparam 4096 -out dhparam.pem -outform pem

ssl_ciphers "EECDH+aRSA+AESGCM:EDH+aRSA+AESGCM:ECDH+aRSA+AES:EDH+aRSA+AES:kRSA+aRSA+AESGCM:kRSA+aRSA+AES:kRSA+aRSA+3DES";
ssl_ecdh_curve secp384r1;

ssl_stapling on;
ssl_stapling_verify on;

ssl_session_cache shared:SSL:10m;
ssl_session_timeout 10m;