nginx proxy protocol how to setup this with elb in front of it.

upstream tarmac { server internal-BAck-123456789.eu-west-1.elb.amazonaws.com;}

server { listen 80; server_name example.com;

if ($http_x_forwarded_proto != 'https') {
return 301 https://$server_name$request_uri;
}

add_header X-Powered-By kratos;

}

server { listen 443 ssl default_server; listen [::]:443 ssl default_server; server_name example.com;

ssl_certificate /home/deploy/apps/example_com.pem; ssl_certificate_key /home/deploy/genus/genusapp_com.key; ssl_protocols TLSv1 TLSv1.1 TLSv1.2; ssl_prefer_server_ciphers on; ssl_ciphers AES256+EECDH:AES256+EDH:!aNULL;

#root /dev/null; access_log /var/log/nginx/nginx.access.log; error_log /var/log/nginx/nginx.error.log;

location / { proxy_set_header X-Scheme $scheme; proxy_set_header X-Forwarded-Proto https; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header Host $http_host; proxy_set_header Accept-Encoding “”; proxy_set_header X-Real-IP $remote_addr; #proxy_redirect off; proxy_ignore_client_abort on;

proxy_pass https://tarmac
add_header X-Powered-By kratos3;   

}

Hi All , I am trying to setup ALB->NGINX->ALB->APACHE, the above is nginx config it work fine we ALB is removed in front nginx , but fails to load when ALB attached in front of nginx can help me out in this, please