Nginx vod-module与亚马逊s3背后的ELB 504

Question

嗯，很多服务在这里一起工作，但实际上并不复杂。

我有一个运行nginx + nginx-vod-module的ec2，我们使用s3存储桶作为媒体源。直接访问ec2实例访问媒体工作正常。在EC2前面添加ELB后，我得到504错误。

我认为问题必须使用vod_upstream_location和X-Forwarded-For header组合做一些事情，但我不确定。

vod.conf

server {
    listen      80;
    server_name _;

    access_log off;
    error_log /opt/nginx/logs/vod_error.log;

    open_file_cache          max=1000 inactive=5m;
    open_file_cache_valid    2m;
    open_file_cache_min_uses 1;
    open_file_cache_errors   on;

    vod_upstream_location /s3;
    vod_mode remote;
    vod_metadata_cache metadata_cache 256m;
    vod_response_cache response_cache 256m;

    location /s3/ {
        internal;
        proxy_pass http://s3bucket-url.amazonaws.com/;
      }

    location /hls/ {
        vod hls;
        gzip on;
        gzip_types application/x-mpegURL;
        add_header Access-Control-Allow-Origin "*";
    }

    location /hds/ {

        vod hds;
        vod_segment_duration 6000;
        vod_align_segments_to_key_frames on;
        vod_segment_count_policy last_rounded;

        add_header Last-Modified "Sun, 19 Nov 2000 08:52:00 GMT";
        add_header Access-Control-Allow-Origin "*";
        expires 100d;
    }

    location /crossdomain.xml {
        alias /opt/nginx/html/crossdomain.xml;
        access_log off;
    }

    location /status/ {
        vod_status;
    }
}