Dropbox as upsream server

[Maxim Dounin]

Hello!

On Thu, Apr 11, 2013 at 04:15:02AM -0400, winniethepooh wrote:

> I'm trying to use the Dropbox public folder and my nginx server as a
> upstream server to server static files. I'm hoping someone can point me in
> the right direction or tell me what I'm doing wrong.
> 
> So:
> my.domain.net/u/#########/*.bz2 serves from
> http://dl.dropbox.com/u/#########/*.bz2 "twice" as much as
> my.domain.net/u/#########/*.bz2 
> 
> It seems when the server uses the x.x.x.x:80 it loops and hits the
> proxy_pass directive over and over resulting in a 500 error.
> 
> Any help is appreciated!
> 
> 
> Here is what my configuration looks like:
> upstream backend {
>   server   x.x.x.x:80 weight=1 max_fails=2;
>   server   dl.dropbox.com:80 weight=2 max_fails=2;
> }

It's not clear why you added "x.x.x.x" to the upstream block if 
it's not an upstream but the same server.  Obvious solution would 
be to remove it.

If you try to implement "check the local disk, and if the file 
isn't there - proxy to dropbox" logic, correct solution would be 
to use something similar to an example provided at 
http://nginx.org/r/error_page:

    location / {
        error_page 404 = @fallback;
    }

    location @fallback {
        proxy_pass http://backend;
    }

-- 
Maxim Dounin
http://nginx.org/en/donation.html