nginx conf to redirect form http/www to https on AWS ELB

nginx.conf

# set DOMAIN_NAME to your domain, example "google.com"

# server {

  set $https_redirect 0;

  if ($http_host = 'www.DOMAIN_NAME') {
    set $https_redirect 1;
  }

  if ($http_x_forwarded_proto = 'http') {
    set $https_redirect 1;
  }

  if ($http_x_forwarded_proto = '') {
    set $https_redirect 1;
  }

  if ($http_user_agent ~ 'ELB-HealthChecker') {
    set $https_redirect 0;
  }

  if ($https_redirect = 1) {
    return 301 https://DOMAIN_NAME$request_uri;
  }