Non HTTP stuff on Elastic Beanstalk

No, aws doesn't expose port when running docker. But it uses port information from the container to create an upstream on nginx config.

/etc/nginx/conf.d/elasticbeanstalk-nginx-docker-upstream.conf

upstream docker {
    server 172.17.0.33:24224;
    keepalive 256;
}

Then another file to do reverse-proxy

/etc/nginx/sites-enabled/elasticbeanstalk-nginx-docker-proxy.conf

map $http_upgrade $connection_upgrade {
    default     "upgrade";
    ""          "";
}

server {
    listen 24224;

    location / {
        proxy_pass          http://docker;
        proxy_http_version  1.1;

        proxy_set_header    Connection          $connection_upgrade;
        proxy_set_header    Upgrade             $http_upgrade;
        proxy_set_header    Host                $host;
        proxy_set_header    X-Real-IP           $remote_addr;
        proxy_set_header    X-Forwarded-For     $proxy_add_x_forwarded_for;
    }
}

I think we need to remove http from that proxy_pass line.

I'll post an update when it works.

PS:
Let me know if trying to run fluentd on EB is not a futile effort.

Update:
I managed to make it works!