NGINX configuration for having a nodejs server and wordpress behind an Nginx reverse proxy

nginx-conf

upstream backend {
	server <IP1>:<PORT>;
	server <IP2>:<PORT>;
}

server {
	listen 80;
	server_name geektrust.in;
	return 301 https://www.geektrust.in$request_uri;
}

server {
  listen   80; 
  server_name www.geektrust.in;
	return 301 https://www.geektrust.in$request_uri;	
}

server {
	listen 443;
	ssl on;
	ssl_certificate <path_to_ssl_crt>
	ssl_certificate_key <path_to_ssl_key>
	
	server_name www.geektrust.in;
  port_in_redirect off;
  autoindex on;
  root /var/www/html;
  
  location / {
    root <path_to_application_directory_which_has_index_file>;
    index index.html
    try_files $uri $uri/ /index.html=404;
  }
  
  location /api {
    proxy_set_header Host $http_host;
    proxy_pass http://backend;
  }

  location /blog {
    index index.php index.html index.htm;
    try_files $uri $uri/ /blog/index.php?q=$uri&$args;
  }

  location ~ \.php$ {
    fastcgi_split_path_info ^(/.+\.php)(/.+)$;
    fastcgi_pass unix:/var/run/php5-fpm.sock;
    fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
    include fastcgi_params;
  }
  
  location ~ /\.ht {
    deny all;
  }
}