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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