OVH Load Balancer - HTTP Header

Get HTTP Headers on your services behind OVH Load Balancer


With any frontend service like CDN, IP Loadbalancing in front of your services, the IP of your clients is hidden by this service.

In your log, you'll only see privateIP, and we'll fix this. - - [22/Mar/2017:10:56:47 +0100] "GET / HTTP/1.1" 200 706 "-" "Mozilla/5.0 (Linux[...]" - - [22/Mar/2017:10:56:47 +0100] "GET / HTTP/1.1" 200 706 "-" "Mozilla/5.0 (Linux[...]"


You need to restrict access to your webservices from our IP Loadbalancing.

With this api call you can get IP Range of our servers.



This header have inside the Ip of your client.


1. LogFormat "%{X-Forwarded-For}i-%h- %l %u %t \"%r\" %>s %O \"%{Referer}i\" \"%{User-Agent}i\"" loadbalancing
2. CustomLog /chemin/fichier.log loadbalancing


1. log_format "%{X-Forwarded-For}i-%h- %l %u %t \"%r\" %>s %O \"%{Referer}i\" \"%{User-Agent}i\"" loadbalancing
2. access_log /chemin/fichier.log loadbalancing


You can also get the scheme used by your client to reach OVH Load Balancer. This is helpfull to redirect HTTP to HTTPS


With htaccess, you can redirect your customers in HTTPS.

1. RewriteEngine on
2. RewriteCond %{HTTP:X_Forwarded_Proto} !https
3. RewriteRule ^ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]


This is not a good configuration, you'll reduce your service performance.

if ($http_x_forwarded_proto = "http") {
        return 301 https://$host/$request_uri;

Nginx (best)

With Nginx, it's best to use a entire VHost to redirect HTTP to HTTPS.

server {
        listen [::]:80 default_server;
        listen 80 default_server;
        server_name _;
        root /var/www/;
        location / {
                return 301 https://$server_name$request_uri;

Send headers to PHP


1. Header set REMOTE_ADDR %{HTTP:X_Forwarded_Proto}


With RealIP module.

1. real_ip_header X-Forwarded-For;
2. set_real_ip_from;

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