Nginx server snippet

sites-available-default

server{
  server_name examplehost1.com;
  rewrite ^/(.*) http://www.examplehost1.com permanent;
}
server{
  server_name blog.examplehost1.com;
  rewrite ^/(.*) http://www.examplehost1.com permanent;
}
server{
  server_name www.examplehost1.com;
  location / {
    proxy_pass http://127.0.0.1:3000;
  }
}
server{
  server_name www.examplehost2.com;
  location / {
    proxy_pass http://127.0.0.1:3001;
  }
}
server{
  server_name examplehost2.com;
  rewrite ^/(.*) http://www.examplehost2.com permanent; 
}