Nginx reverse proxy too many redirections

nginxredirectreverse-proxy

I want to configure nginx to act as a reverse proxy that will redirect to two different Kibana hosts depending on the passed URI. / redirect to the standard and /october/ to the october dedicated Kibana. The first part of the configuration (/) works well but I got a Too many redirections error when a try to access /october. I tried to comment out the second part (location /october/) and replace localhost by 10.10.0.3 in the first one and I'm redirected to the october platform. So the problem is on this nginx configuration.

server {
    listen                  80;
    server_name             my.domain.io;
    return                  301 https://$server_name;
}

server {
    listen                  443 ;
    ssl                     on;
    ssl_certificate         /etc/letsencrypt/live/my.domain.io/cert.pem;  
    ssl_certificate_key     /etc/letsencrypt/live/my.domain.io/privkey.pem;  
    server_name             my.domain.io; 
    access_log              /var/log/nginx/kibana.access.log;
    error_log               /var/log/nginx/kibana.error.log;

    location / {
            auth_basic              "Restricted";
            auth_basic_user_file    /etc/nginx/conf.d/kibana.htpasswd;


            location / {
                    proxy_pass              http://localhost:5601;
                    proxy_http_version      1.1;
                    proxy_set_header        Upgrade $http_upgrade;
                    proxy_set_header        Connection 'upgrade';
                    proxy_set_header        Host $host;
                    proxy_cache_bypass      $http_upgrade;
            }

            location /october/ {
                    proxy_pass              http://10.10.0.3:5601;
                    proxy_http_version      1.1;
                    proxy_set_header        Upgrade $http_upgrade;
                    proxy_set_header        Connection 'upgrade';
                    proxy_set_header        Host $host;
                    proxy_cache_bypass      $http_upgrade;
            }
    }
}

Best Answer

Thanks to the previous responses, I found the solution but don't exactly know "how" and "why" it works...

Here is my new configuration :

server {
    listen                  80;
    server_name             my.domain.io;
    return                  301 https://$server_name;
}

server {
    listen                  443 ;
    ssl                     on;
    ssl_certificate         /etc/letsencrypt/live/my.domain.io/cert.pem;
    ssl_certificate_key     /etc/letsencrypt/live/my.domain.io/privkey.pem;
    server_name             my.domain.io;
    access_log              /var/log/nginx/kibana.access.log;
    error_log               /var/log/nginx/kibana.error.log;

    auth_basic              "Restricted";
    auth_basic_user_file    /etc/nginx/conf.d/kibana.htpasswd;

    location / {
            proxy_pass              http://localhost:5601;
            proxy_http_version      1.1;
            proxy_set_header        Upgrade $http_upgrade;
            proxy_set_header        Connection 'upgrade';
            proxy_set_header        Host $host;
            proxy_cache_bypass      $http_upgrade;
    }

    location = /october {
            return 302 /october/;
    }

    location /october/ {
            proxy_pass              http://10.10.0.3:5601/;
            proxy_http_version      1.1;
            proxy_set_header        Upgrade $http_upgrade;
            proxy_set_header        Connection 'upgrade';
            proxy_set_header        Host $host;
            proxy_cache_bypass      $http_upgrade;
    }
}

There is no need for proxy_redirect directive. The trick was to add a / at the end of the /october location and redirect /october to /october/whit 302 code. Don't forget that you have to set server.basePath to "/october"in your kibana.yml file.

This post helped me : How to remove the path with an nginx proxy_pass

Hope this will help...

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