How proxy_next_upstream control retry times

Server NGINX
1

hi
now i am looking for a 50x retry method, config like this:

upstream jboss8080 {
server 10.1.2.164:8080 weight=1 max_fails=1
fail_timeout=2s;
server 10.1.2.174:8080 weight=1 max_fails=1
fail_timeout=2s;
server 10.1.2.209:8080 weight=1 max_fails=1
fail_timeout=2s;
server 10.1.7.136:8080 weight=1 max_fails=1
fail_timeout=2s;
server 10.1.7.137:8080 weight=1 max_fails=1
fail_timeout=2s;
server 10.1.7.138:8080 weight=1 max_fails=1
fail_timeout=2s;
}

server {
…
location / {
proxy_next_upstream http_500 http_502 http_503 http_504 timeout error
invalid_header;
…
if ( !-f $request_filename ) {
proxy_pass http://jboss8080;
break;
}
}

error_page                    500 502 503 504  /50x.html;
  location = /50x.html {
  root                        html;
}

}

then how proxy_next_upstream control retry times.

by the way, i used error_page, config like this:

upstream backend {
server localhost:8080 weight=5;
}

upstream backup1 {
server localhost:8081 weight=5;
}

upstream backup2 {
server localhost:8082 weight=5;
}

server {

listen 80;
server_name localhost;
proxy_intercept_errors on;

location / {
error_page 502 @backup1;
proxy_pass http://backend;
}

location @backup1 {
error_page 502 @backup2;
proxy_pass http://backup1;
}

location @backup2 {
proxy_pass http://backup2;
}
}

@backup1works, but @backup2 doesn’t.
how can i let backup2 works.

2

Hello!

On Wed, Feb 06, 2013 at 11:23:24AM +0800, 李文伟 wrote:

server                        10.1.2.209:8080 weight=1 max_fails=1

…
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root html;
}
}

then how proxy_next_upstream control retry times.

Quote from Alphabetical index of directives

: If an error occurs when communicating with the server, a request
: will be passed to the next server, and so on until all of the
: functioning servers will be tried. If a successful response could
: not be obtained from any of the servers, the client will be
: returned the result of contacting the last server.

That is, errors are handled as they appear, and there is no
retry-specific controls except proxy_next_upstream itself. In a
worst case all servers will be tried.

error_page  502 @backup1;

}
}

@backup1works, but @backup2 doesn’t.
how can i let backup2 works.

http://nginx.org/r/recursive_error_pages

–
Maxim D.

3

thank you very much.
with recursive_error_pages on
it works.

2013/2/6 Maxim D. [email protected]

server                        10.1.2.164:8080 weight=1 max_fails=1

fail_timeout=2s;
break;
then how proxy_next_upstream control retry times.
retry-specific controls except proxy_next_upstream itself. In a
server localhost:8081 weight=5;

location @backup2 {
Maxim D.
Technical Support for NGINX and NGINX Plus Software

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