Thanks Dounin,

actually, both 10.10.1.12 and 10.10.1.13 received the POST items with 1.php
(so repeat ran the script) ,
and why both servers being recorded as Upstream_addr in the log file?



2011/6/15 Maxim Dounin <mdounin@mdounin.ru>

> Hello!
>
> On Wed, Jun 15, 2011 at 02:38:08PM +0800, MaLi wrote:
>
> > hi, everyone,
> >
> > nginx version is 0.8.53,
> > configure (http definition) is :
> > ====================================
> > http{
> > upstream my_loads {
> > server 10.10.1.12;
> > server 10.10.1.13;
> > }
> >
> > log_format combined_addsvr '$remote_addr - $remote_user [$time_local]
> '
> > '"$request" $status $body_bytes_sent '
> > '"$http_referer" "$http_user_agent"
> $upstream_addr
> > $upstream_cache_status ';
> > access_log logs/access.log combined_addsvr;
> >
> > server {
> > listen 80;
> > server_name mytest.com;
> > client_max_body_size 100m;
> > proxy_buffering off;
> > proxy_read_timeout 120;
> > proxy_send_timeout 120;
> > client_body_timeout 120;
> > send_timeout 120;
> >
> > location / {
> > proxy_pass http://my_loads/;
> > proxy_set_header Host $host;
> > proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
> > }
> > }
> > ===========================================
> >
> > there is a strange line in log file: (sorry to use xxx replace of true
> url)
> > 192.168.1.1 - - [14/Jun/2011:20:53:24 +0800] "POST /1.php HTTP/1.1" 200
> > 3729558 "http://mytest.com/xxx" "Mozilla/4.0 (compatible; MSIE 7.0;)"
> > 10.10.1.12:80, 10.10.1.13:80 -
> >
> > when nginx deals with 1.php, it sends POST to all upstream servers!
> >
> > the next is normal log:
> > 192.168.1.1 - - [14/Jun/2011:20:53:44 +0800] "POST /1.php HTTP/1.1" 302
> 2 "
> > http://mytest.com/xxx" "Mozilla/4.0 (compatible; MSIE 7.0;)"
> 10.10.1.12:80 -
> >
> > Could anyone tell me if it is a bug or just any configure improperly?
> > thanks.
>
> nginx will retry request on next upstream server if first one
> failed, see here:
>
> http://wiki.nginx.org/HttpProxyModule#proxy_next_upstream
>
> Maxim Dounin
>
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>
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