Recursive Error Pages or how to try more than one location

Server NGINX
1

Hello list,

i have to store images on 3 servers. Image processing runs on all of the
3 servers and spreading the images over the 3 servers is a background
task, so it takes some time the images are available on all 3 servers.

Nginx should try to fetch the image from an other server. But my
configuration only works 1 level depth. Nginx never trys to fetch from
location @s2 or @s3.

How can i configure nginx trying to find the image on all 3 server?

Any hints are welcome.

Thanks

server {

listen 80;
root /var/www/nginx-default;

recursive_error_pages on;

location @s1 {
    internal;
    proxy_pass              http://192.168.0.10;
    proxy_intercept_errors  off;
    proxy_store             on;
    proxy_store_access      user:rw  group:rw  all:rw;
    proxy_temp_path         /var/www/nginx-default/tmp;
    root                    /var/www/nginx-default;
    recursive_error_pages   on;
    error_page              404 502 = @s2;
}

location @s2 {
    internal;
    proxy_pass              http://192.168.0.20;
    proxy_store             on;
    proxy_store_access      user:rw  group:rw  all:rw;
    proxy_temp_path         /var/www/nginx-default/tmp;
    root                    /var/www/nginx-default;
    recursive_error_pages   on;
    error_page              404 502 = @s3;
}


location @s3 {
    internal;
    proxy_pass              http://192.168.0.30;
    proxy_store             on;
    proxy_store_access      user:rw  group:rw  all:rw;
    proxy_temp_path         /var/www/nginx-default/tmp;
    root                    /var/www/nginx-default;
    recursive_error_pages   on;
    error_page              404 = /404.htm;
}


location ~* \.(jpg|jpeg)$ {
    root                    /var/www/nginx-default;
    error_page              404 = @node1;
}

}

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2

On Tue, Jun 22, 2010 at 08:57:15AM +0200, Elena Z. wrote:

Hello list,

i have to store images on 3 servers. Image processing runs on all of the 3 servers and spreading the images over the 3 servers is a background task, so it takes some time the images are available on all 3 servers.

Nginx should try to fetch the image from an other server. But my configuration only works 1 level depth. Nginx never trys to fetch from location @s2 or @s3.

How can i configure nginx trying to find the image on all 3 server?

Any hints are welcome.

You should add

     proxy_intercept_errors  off;

in @s2 and @s3.

However, there is a way to handle files in one location:

     proxy_next_upstream   ...  http_404  ...;

location @s1 {


}

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[email protected]
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–
Igor S.
http://sysoev.ru/en/

3

On Tue, Jun 22, 2010 at 11:02:51AM +0400, Igor S. wrote:

Any hints are welcome.

You should add

     proxy_intercept_errors  off;

in @s2 and @s3.

Sorry, you should set
proxy_intercept_errors on;

in all @s1,2,3.

root /var/www/nginx-default;
root /var/www/nginx-default;
root /var/www/nginx-default;
proxy_temp_path /var/www/nginx-default/tmp;
}
Igor S.
Igor Sysoev

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[email protected]
nginx Info Page

–
Igor S.
http://sysoev.ru/en/

4

Oh, yes that make sense… “intercept” :slight_smile: But i will try
to use proxy_next_upstream.

Thanks a lot for your fast, very fast helpful answer.

nginx, you make my day :))

-------- Original-Nachricht --------

Datum: Tue, 22 Jun 2010 11:05:36 +0400
Von: Igor S. [email protected]
An: [email protected]
Betreff: Re: Recursive Error Pages or how to try more than one location

     proxy_intercept_errors  off;
     proxy_next_upstream   ...  http_404  ...;

}
}
    error_page              404 = /404.htm;

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[email protected]
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