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I am using two system (both are nginx load balancer and one act as an backup). I want to add and use few http custom headers. Please give your suggestion


  upstream upstream0{
            #list of upstream servers
            server backend:80;
            server backup_load_balancer:777 backup;

        listen  80;
        #Add custom header about the port and protocol  (http or https)
        server_name     _;
        location / {
                proxy_pass "http://upstream0;#" is included since links are not allowed in the post


//Backup system

        listen  777;
        server_name     _;
        #doing some other extra stuf

        #use port and protocol to direct


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If you want to add headers then you want something like this:

server {
    listen  80;
    server_name     _;
    add_header X-Frame-Options "SAMEORIGIN";
    add_header X-Frame-Options sameorigin;
    add_header X-UA-Compatible "IE=Edge,chrome=1";
    add_header X-Your-Port-Header-Here $server_port;
    add_header X-Your-Protocol-Header-Here $scheme;
    set $yourcustomheader $scheme$server_port;
    add_header X-Your-Custom-Header $yourcustomheader;
    location / {
            proxy_pass http://upstream0;


You can reference the following variables in Nginx. If the above doesn't provide enough flexibility for you then take a look at the HttpHeadersMore module, but note that is not provided in most standard Nginx distributions so you may have to compile it yourself. If you use Debian, though, then you can find it in the nginx-extras package from Dotdeb.

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