NGINX Documentation

Setting Up an NGINX Demo Environment

The instructions in this guide explain how to set up a simple demo environment that uses NGINX Plus to load balance web servers that run NGINX Open Source NGINX OSS and serve two distinct web applications.

Prerequisites

This guide assumes you have already provisioned the required number of host systems (physical servers, virtual machines, containers, or cloud instances) and installed NGINX Plus and NGINX OSS. For instructions, see the NGINX Plus Admin Guide.

Some commands require root privilege. If appropriate for your environment, prefix commands with the sudo command.

Configuring NGINX Plus as a Load Balancer

Repeat these instructions on each host.

For information about sharing configuration across a cluster, see the NGINX Plus Admin Guide.

  1. Open a connection to the NGINX Plus instance and change directory to /etc/nginx/conf.d:

    $ cd /etc/nginx/conf.d
    
  2. Rename default.conf to default.conf.bak so that NGINX Plus does not load it automatically.

    $ mv default.conf default.conf.bak
    
  3. Create a new file called lb.conf with the following contents.

    Note: In the upstream blocks, include a server directive for each NGINX OSS instance that serves the relevant application.

    # in the 'http' context
    upstream app1 {
        server <!-- Replace me with internal IP address of NGINX OSS host for App 1 -->;
        zone app1 64k;
    }
    
    upstream app2 {
        server <!-- Replace me with internal IP address of NGINX OSS host for App 2 -->;
        zone app2 64k;
    }
    
    server {
        listen 80;
        status_zone backend;
        root /usr/share/nginx/html;
    
        location / {
            <!-- Replace me with directives for serving the site's HTML landing page --> 
        }
    
        location /application1 {
            proxy_set_header Host $host;
            proxy_set_header X-Forwarded-For $remote_addr;
            proxy_pass http://app1/;
        }
    
        location /application2 {
            proxy_set_header Host $host;
            proxy_set_header X-Forwarded-For $remote_addr;
            proxy_pass http://app2/;
        }
    
        location /api {
            api write=on;
            # directives controlling access, such as 'allow' and 'deny'
    
        location = /dashboard.html {
            root /usr/share/nginx/html;
        }
    
        location = /status.html {  # redirect requests made to pre-R14 dashboard
            return 301 /dashboard.html;
        }
    }
    

Configuring NGINX Open Source as a Web Server

Repeat these instructions on each host.

  1. Open a connection to the NGINX OSS instance and change directory to /etc/nginx/conf.d:

    $ cd /etc/nginx/conf.d
    
  2. Rename default.conf to default.conf.bak so that NGINX Plus does not load it automatically.

    $ mv default.conf default.conf.bak
    
  3. Create a new file called app.conf with the following contents.

    server {
        listen 80 default_server;
        server_name app_server;
        root /usr/share/nginx/html;
        error_log /var/log/nginx/app-server-error.log notice;
        index demo-index.html index.html;
        expires -1;
    
        sub_filter_once off;
        sub_filter 'server_hostname' '$hostname';
        sub_filter 'server_address' '$server_addr:$server_port';
        sub_filter 'server_url' '$request_uri';
        sub_filter 'remote_addr' '$remote_addr:$remote_port';
        sub_filter 'server_date' '$time_local';
        sub_filter 'client_browser' '$http_user_agent';
        sub_filter 'request_id' '$request_id';
        sub_filter 'nginx_version' '$nginx_version';
        sub_filter 'document_root' '$document_root';
        sub_filter 'proxied_for_ip' '$http_x_forwarded_for';
    }
    
  4. In the /usr/share/nginx/html directory, create a new file called demo-index.html with the following contents, which define the default website that users see.

    In the <title> tag, replace the comment with 1 or 2 depending on whether the host is serving App 1 or App 2.

    Version with indenting:

    <!DOCTYPE html>
    <html>
        <head>
            <title>Hello World - App <!-- Replace me with 1 or 2 as necessary --></title>
            <link href="data:image/png;base64,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" rel="icon" type="image/png" />
            <style>
                body {
                    margin: 0px;
                    font: 20px 'RobotoRegular', Arial, sans-serif;
                    font-weight: 100;
                    height: 100%;
                    color: #0f1419;
                }
                div.info {
                    display: table;
                    background: #e8eaec;
                    padding: 20px 20px 20px 20px;
                    border: 1px dashed black;
                    border-radius: 10px;
                    margin: 0px auto auto auto;
                }
                div.info p {
                    display: table-row;
                    margin: 5px auto auto auto;
                }
                div.info p span {
                    display: table-cell;
                    padding: 10px;
                }
                img {
                    width: 176px;
                    margin: 36px auto 36px auto;
                    display:block;
                }
                div.smaller p span {
                    color: #3D5266;
                }
                h1, h2 {
                    font-weight: 100;
                }
                div.check {
                    padding: 0px 0px 0px 0px;
                    display: table;
                    margin: 36px auto auto auto;
                    font: 12px 'RobotoRegular', Arial, sans-serif;
                }
                #footer {
                    position: fixed;
                    bottom: 36px;
                    width: 100%;
                }
                #center {
                    width: 400px;
                    margin: 0 auto;
                    font: 12px Courier;
                }
            </style>
            <script>
                var ref;
                function checkRefresh(){
                    if (document.cookie == "refresh=1") {
                        document.getElementById("check").checked = true;
                        ref = setTimeout(function(){location.reload();}, 1000);
                    } else {
                    }
                }
                function changeCookie() {
                    if (document.getElementById("check").checked) {
                        document.cookie = "refresh=1";
                        ref = setTimeout(function(){location.reload();}, 1000);
                    } else {
                        document.cookie = "refresh=0";
                        clearTimeout(ref);
                    }
                }
            </script>
        </head>
        <body onload="checkRefresh();">
            <img alt="NGINX Logo" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAWAAAABICAMAAAD/N9+RAAAAVFBMVEUAAAAAmQAAmQAAmQAAmQAAmQAAmQAAmQAAmQAAmQAAmQAAmQAAmQAAmQAAmQAAmQAAmQAAmQAAmQAAmQAAmQAAmQAAmQAAmQAAmQAAmQAAmQAAmQDBect+AAAAG3RSTlMAB0AY8SD5SM82v1npsJ/YjSl0EVLftqllgMdZgsoQAAAHd0lEQVR42szZ6XabMBCG4ZGFxSazLzZz//fZc9I4JpbEN8LQ0/dnGwJ5DJGG0HdpM9kkuzVXiqussmRpLrRdnwqDp9ePyY7zXdFbqptHOz00RTVUxWiyquvJ26Upknp2/heWN0Uyzt3qYtKMn805ybsW/LdK01YVC6sVELH81XJ9o6j5q6Qkcepe83dJp8ipf161HSgm1TyPK5//cuN1d5KmE342bsnkLK6hre78LNG0KuWfOrFDwats69w8ln+qFIlrx9Vxf8808e8eJGx9YEXhCpZ3kX2gfFtbrX4m05IonTE7wsGLnpXY1/Kqr3v/5r+NcAOvy8HXCRt74W+alH568KqCJKmM37LafVhe3ZTU1/mmA7uV9Ar8vPjZVCPDZI+CDdwFC68yIooZnbhmIAx8XyoZu5mcYO9HzhSo47gGCqR53ULPlAGPkuyazJVeKWYsjH15Djy/VhPO8LoM/OJE4XNfeJ19LUfRj18KF9gLA2GZL4/UsLdFHQVccWyTCDjZD9wm7Kt2PgIgjH3ZBlf46iDgnOO7nwusavZmVoCaPU0q1pcnshyoOwa44PiS66nANw7U0isbK5x7j3gQB0uPAB54T8WZwA/RHrxhLIx9TbsBnLSfA6uRd9WdBzywCFiNUcJ5wr4eRByu7j8G7nhfpj0LuE0A8OtsSBj7ZooIL+dyYLxFm27+EvfSzgHua/GYXrK3Qol9a03bwNxEAeMt2ix/bptzgCeGwFhY7ouAufwIOA/PSni3nJ8B3DAElgtjXwxs8k+Al/BdiVfDWh0PPDAAjhXGvgTnVjkwujzbk1t4TWkOB24TBBwrjH2JQZnaC6xGsPdCT296MHA/MgKWC2NfL7Blp2ov8AM88/gNbX8osCrc5xMAA2Ho6wIXHTt1+4C1iZwMW8NvzYcCN67vAICBMPZ1galip3QXcAXHXzyVlB8AYyiT5wAYCWNfF1gtYGYWAufhNynyTWqiDwPOjeelnQiYShMQBr5+YNIWzMwy4CX69afv1NNRwHr07FKEwDT4hTPs6wL7P+tCxQKXm/eifJ963wmMF7hCYWBXGJdpAsBUopkZAyv3j3+i9PUtTa/U9VcAGC1wmgAwFsa+LnBooLxj4K0t2qjo8AAwWuAIAO8TznoSANMEZmYErA14p3EyMF7gSgLAQBj4ImBVg5kZAM/8u4VAJwJ7l+2GADAQBr4A2D+1Z0oMnKM3Y2cD4wUOAANh5IuB6cJOsxg4Q0eeCwwXuFETBnZLDfSVA1NwZsbAJXwN/C+B7771BAAjYeyLgX0z8yACVlawx1NaXh+5TcMLHACGwtgXA6OZ2QUObdGsorfabjIsr4wcNOACB4CBMPLFwOHpcuwx8NWgLXTJURW0H1gtngUOA8cLLz1FAsOZWQ4MfFH5B8CV7x75b4D/NHduS47CMBCVwYFAiDEmCQT+/z/3ZWumah1otZdL/MxMZc5gybJanU8tLI9DhF8PESXJ10k64PAxyn1LiPisMhr/N8kNHF+bpwPOis95+juS3IJOrsgQYBlXj2mWFVHRgHGC+4pj2kKjbG4ufKGRLmdtTTJgc12WKn1BofE7zBTXzAhwtlIqP9h5gmTAbq1xcHqpvBbHBgRY7suXPTl/ROMB4wR36mUPKjXnNwLcrVxXXimRZTLgDBSiZ15XYj3XAwAWv3zh7gnAXtIAx6Etnq888cIdX/fZDgDul1tGvf4Vtn0S4M8J7i7ROq1lhCVHzzwGvBpYbJ5AOEgq4EEzZn5K01MrmqvNOmDTLrft+8FSRzQecFBpO05p26tlnw7oIso14YnJ3i5aL6DF0wMuleqkM4Qn+smcAKRTL1Y65UDQVAO+WK2+7gTplH54usjWAXek+K+LCuxEwGMLul0R4EPFfz8L18zzKmDxIKSCN95LIuBGr3GujpevErqxGQDuLaPuyUAfBAPGg6Mx4OME2DhQVgUJWAIzQnBFfRAeMI5N1XEjBBiwjCxg0+qHYG7wt/GA8capDh+CqYkpCoykjPKWesio2gywEwD4qDEuDNjUJGCptQqUAB5MB3w1APBhg4gYsPQtCbib00Zpi3wrwM1FAOBjR2lrZBXCARY3J623bAS4yAQAPnIYHAOWkgSc2xS+T7MV4CAA8LF2BhiwBAwYP4+lPBsBdgIAH2XIgQHjTf+SrRw5auEAG5Dg9ID3t5TBgM3EWR88eMAVCVieYM5aDXgHUyQAmKiZR9nIFckJC/gFnALUgHew9QKAiZq5A3+EXspDAw7gP64GvIcxXQvfHl2B7tiozSf+y1JSNQ31gRYDQb6HteKQ4B3s4QucflRrDW8OKiHBujCO3s0u5qAjwKR0vnkDozL1emgd5W6EWa1ud7l97G0n3jhYzACOEMlHtVpjeBA/mLf/7IOoQsa7y+b7GDR3Rbw98fKQLy+5xv7VIXowIhy1ztUfbdzLYrz7cbrvRb/K+nf7wPPQpAXsEQ/7l2AXW97/AGkCwaNsIif8zU3y5eZaO/mK/jKDV1s872/Fz11K5TLE1zzEiP1km8ndDMcj3JvmFfqdvubhD8TgHPiN+LViAAAAAElFTkSuQmCC"/>
            <div class="info">
                <p><span>Server name:</span> <span>server_hostname</span></p>
                <p><span>Server address:</span> <span>server_address</span></p>
                <p><span>User Agent:</span> <span><small>client_browser</small></span></p>
                <p class="smaller"><span>URI:</span> <span>server_url</span></p>
                <p class="smaller"><span>Doc Root:</span> <span>document_root</span></p>
                <p class="smaller"><span>Date:</span> <span>server_date</span></p>
                <p class="smaller"><span>NGINX Front-End Load Balancer IP:</span><span>remote_addr</span></p>
                <p class="smaller"><span>Client IP:</span> <span>proxied_for_ip</span></p>
                <p class="smaller"><span>NGINX Version:</span> <span>nginx_version</span></p>
            </div>
            <div class="check"><input type="checkbox" id="check" onchange="changeCookie()"> Auto Refresh</div>
            <div id="footer">
                <div id="center" align="center">
                    Request ID: request_id<br/>
                    © NGINX, Inc. 2018
                </div>
            </div>
        </body>
    </html>
    

    Original version:

    <!DOCTYPE html>
    <html>
    <head>
    <title>Hello World - App <!-- Replace me with 1 or 2 as necessary --></title>
    <link href="data:image/png;base64,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" rel="icon" type="image/png" />
    <style>
    body {
    margin: 0px;
    font: 20px 'RobotoRegular', Arial, sans-serif;
    font-weight: 100;
    height: 100%;
    color: #0f1419;
    }
    div.info {
    display: table;
    background: #e8eaec;
    padding: 20px 20px 20px 20px;
    border: 1px dashed black;
    border-radius: 10px;
    margin: 0px auto auto auto;
    }
    div.info p {
    display: table-row;
    margin: 5px auto auto auto;
    }
    div.info p span {
    display: table-cell;
    padding: 10px;
    }
    img {
    width: 176px;
    margin: 36px auto 36px auto;
    display:block;
    }
    div.smaller p span {
    color: #3D5266;
    }
    h1, h2 {
    font-weight: 100;
    }
    div.check {
    padding: 0px 0px 0px 0px;
    display: table;
    margin: 36px auto auto auto;
    font: 12px 'RobotoRegular', Arial, sans-serif;
    }
    #footer {
    position: fixed;
    bottom: 36px;
    width: 100%;
    }
    #center {
    width: 400px;
    margin: 0 auto;
    font: 12px Courier;
    }
    </style>
    <script>
    var ref;
    function checkRefresh(){
    if (document.cookie == "refresh=1") {
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    <div class="info">
    <p><span>Server name:</span> <span>server_hostname</span></p>
    <p><span>Server address:</span> <span>server_address</span></p>
    <p><span>User Agent:</span> <span><small>client_browser</small></span></p>
    <p class="smaller"><span>URI:</span> <span>server_url</span></p>
    <p class="smaller"><span>Doc Root:</span> <span>document_root</span></p>
    <p class="smaller"><span>Date:</span> <span>server_date</span></p>
    <p class="smaller"><span>NGINX Front-End Load Balancer IP:</span><span>remote_addr</span></p>
    <p class="smaller"><span>Client IP:</span> <span>proxied_for_ip</span></p>
    <p class="smaller"><span>NGINX Version:</span> <span>nginx_version</span></p>
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