Nginx config for rails 4 application using puma [ssl and non-ssl version]

nginx-config-rails4-with-puma-ssl-version.conf

upstream myapp_puma {
  server unix:/tmp/myapp_puma.sock fail_timeout=0;
}

# for redirecting to https version of the site
server {
       listen 80;
       rewrite ^(.*) https://$host$1 permanent;
 }
 
# for redirecting to non-www version of the site
server {
    listen  80;
    server_name  www.example.com;
    rewrite ^(.*) http://example.com$1 permanent;
}


server {
  listen  443 default ssl;
  server_name example.com;
  root /home/username/example.com/current/public;

  ssl on;
  ssl_certificate /home/username/.comodo_certs/example.com.crt;
  ssl_certificate_key /home/username/.comodo_certs/example.com.key;

  ssl_session_timeout  5m;

  ssl_protocols  SSLv2 SSLv3 TLSv1;
  ssl_ciphers  HIGH:!aNULL:!MD5;
  ssl_prefer_server_ciphers   on;

  location ^~ /assets/ {
    gzip_static on;
    expires max;
    add_header Cache-Control public;
  }

  try_files $uri/index.html $uri @myapp_puma;
  location @myapp_puma {
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header Host $host;
    proxy_set_header X-Forwarded-Proto https;
    proxy_redirect off;
    proxy_pass http://myapp_puma;
  }

  error_page 500 502 503 504 /500.html;
  client_max_body_size 4G;
  keepalive_timeout 10;
}

nginx-config-rails4-with-puma.conf

upstream myapp_puma {
  server unix:/tmp/myapp_puma.sock fail_timeout=0;
}
 
# for redirecting to non-www version of the site
server {
    listen  80;
    server_name  www.example.com;
    rewrite ^(.*) http://example.com$1 permanent;
}

server {
  listen  80 default;
  server_name example.com;
  root /home/username/example.com/current/public;

  location ^~ /assets/ {
    gzip_static on;
    expires max;
    add_header Cache-Control public;
  }

  try_files $uri/index.html $uri @myapp_puma;
  location @myapp_puma {
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header Host $host;
    proxy_set_header X-Forwarded-Proto http;
    proxy_redirect off;
    proxy_pass http://myapp_puma;
  }

  error_page 500 502 503 504 /500.html;
  client_max_body_size 4G;
  keepalive_timeout 10;
}

## Running puma
# bundle exec puma -e production -d -b unix:///tmp/myapp_puma.sock