Simple Nginx Proxy to S3 Bucket Asset

nginx_s3_proxy.conf

server {
	listen 80;
	listen 443 default_server ssl;

	ssl on;
	ssl_certificate /etc/ssl/certs/myssl.crt;
	ssl_certificate_key /etc/ssl/private/myssl.key;

	server_name *.example.com;
	root /var/www/vhosts/website;

	location / {
		index  index.php index.html index.htm;

		if (-f $request_filename) {
			break;
		}

		if (-d $request_filename) {
			break;
		}

		# using PHP app routing
		rewrite ^(.+)$ /index.php?url=$1 last;
	}

	# Proxy any URL request to S3 bucket and remove any Amazon headers
	location ~ "^/asset/(.*)$" {
		add_header X-Asset-Location $hostname;
		
		set $bucket "<BUCKET-NAME>";
		set $key $1;

		rewrite .* /$key break;
		
		# no client headers
		proxy_pass_request_headers off;
		
		# let amazon take the buffering load
		proxy_buffering off;
		
		# let amazon retry a few times if first timeouts are 5xx response
		proxy_next_upstream error timeout http_500 http_502 http_503 http_504;

		proxy_set_header Host $bucket.s3.amazonaws.com;

		proxy_pass http://s3.amazonaws.com;
		proxy_hide_header "x-amz-id-2";
		proxy_hide_header "x-amz-request-id";
	}
}

Thanks for this. I found I had to omit the Host header you use and proxy_pass straight to the bucket URL, otherwise Amazon would issue a 307 redirect which nginx would pass on, turning the proxy into a redirect! I also had to specify a resolver after making that change.