upstream sent too big header while reading response header from upstream-白红宇

年底了事情真多，club服务器有问必答提交页面提交出这个问题

The page you are looking for is temporarily unavailable.Please try again later.

一看就知道是nginx的请求的错误，，惆怅啊。。

就开启了错误日志查看。。。

tail -f error.log

就具体错误是：

upstream sent too big header while reading response header from upstream

我们是nginx反向代理

proxy是nginx作为client转发时使用的，如果header过大，超出了默认的1k，就会引发上述的upstream sent too big header （说白了就是nginx把外部请求给后端apache ，apache返回的header 太大nginx处理不过来就导致了。

server {

listen 80;

server_name *.xywy.com ;

large_client_header_buffers 4 16k;

#charset koi8-r;

# access_log off;

location / {

#添加这3行，

proxy_buffer_size 64k;

proxy_buffers 32 32k;

proxy_busy_buffers_size 128k;

proxy_set_header Host $host;

proxy_set_header X-Real-IP $remote_addr;

proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

set $baiduspider '';

if ( $http_user_agent ~ Baiduspider) {

set $baiduspider Baidu;

}

............

如果是 nginx+PHPcgi 就该

fastcgi_connect_timeout 60;

fastcgi_send_timeout 180;

fastcgi_read_timeout 180;

fastcgi_buffer_size 128k;

fastcgi_buffers 4 256k;

fastcgi_busy_buffers_size 256k;

fastcgi_temp_file_write_size 256k;

fastcgi_intercept_errors on

011/01/07 11:12:57 [error] 10770#0: *38585340 upstream timed out (110: Connection timed out) while reading response header from upstream, client: 116.22.131.154, server: *.xywy.com, request: "GET /ysmp/index.php?did=124994 HTTP/1.0", upstream: "http://127.0.0.1:8080/ysmp/index.php?did=124994", host: "xywy.yn16.com"

后来原来那错误没了出了新错误了 upstream timed out 超时？

server {

listen 80;

server_name *.xywy.com ;

  large_client_header_buffers 4 16k;
        client_max_body_size 300m;
        client_body_buffer_size 128k;
        proxy_connect_timeout 600;
        proxy_read_timeout 600;
        proxy_send_timeout 600;
                proxy_buffer_size 64k;
                proxy_buffers   4 32k;
                proxy_busy_buffers_size 64k;
                proxy_temp_file_write_size 64k;

#charset koi8-r;

# access_log off;

后来参数我又改了下就好了。。。

可以参考：

本文转自 houzaicunsky 51CTO博客，原文链接: 13页http://blog.51cto.com/hzcsky/475574