nginx 正在切割动态页面的末尾并缓存它们

Question

我将我的一个旧站点从 Apache 移到了 nginx 服务器。一切正常，但该站点有一些长内容（+100k 生成的 HTML 文件）。

我的第一次尝试是禁用分块传输编码，但这并没有帮助。

这是我的 nginx 配置：

$ cat /etc/nginx/nginx.conf
user www-data;
worker_processes  1;

error_log  /var/log/nginx/error.log;
pid        /var/run/nginx.pid;

events {
    worker_connections  1024;
}

http {
    include       /etc/nginx/mime.types;

    sendfile        on;
    keepalive_timeout  65;
    tcp_nodelay        on;

    gzip  on;
    gzip_static on;
    gzip_http_version   1.0;
    gzip_disable        "MSIE [1-6]\.";
    gzip_vary           on;
    gzip_comp_level 1;
    gzip_proxied    any;
    gzip_types      text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript application/javascript text/x-js;
    gzip_buffers    16 8k;

    include /etc/nginx/conf.d/*.conf;
    include /etc/nginx/sites-enabled/*;
}

$ cat /etc/nginx/sites-enabled/example.com
server {
    listen   443 ssl;
    server_name example.com;

    access_log /var/log/nginx/example.com.access.log;
    error_log /var/log/nginx/example.com.error.log;

    charset iso-8859-2;
    root   /var/www/public/example.com;

    chunkin off;
    chunked_transfer_encoding off;

        location ~ ^.+\.php {
          fastcgi_split_path_info ^((?U).+\.php)(/?.+)$;
          fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
          fastcgi_param SCRIPT_NAME $fastcgi_script_name;
          fastcgi_param PATH_INFO $fastcgi_path_info;
          fastcgi_pass   127.0.0.1:9000;
          include        fastcgi_params;
        }

        location / {
          index index.php;
          try_files $uri /index.php?$args;
        }

    ssl_certificate     /etc/nginx/ssl/server.crt;
    ssl_certificate_key /etc/nginx/ssl/server.key;

}

有一些奇怪的事情正在发生。Firebug 显示页面正在被缓存，但我不知道为什么。

更新：

Finally I can reproduce the issue by using the following PHP script:

<?php
//error_reporting(E_ALL ^ E_NOTICE ^ E_DEPRECATED); //the whole content printed as expected
error_reporting(E_ALL & ~E_DEPRECATED); //truncated content
header("Content-Type: text/plain; charset=iso-8859-2");

$i = 500000;
while ($i) {
  $i--;
  printf("%10s", $i);
  if (!($i%50)) {
    echo "\n";
  }
  $a = $undefined;
}

This script runs and terminates normally if I exclude E_NOTICE from error reporting.

Answer 1

检查这些目录的权限：

• client_body_temp_path
• proxy_temp_path
• fastcgi_temp_path

很可能这些目录中的一个或所有目录对 nginx 不可写。这些临时文件夹在处理大请求时充当 nginx 的缓冲区，如果 nginx 无法写入它们，那么 nginx 只会返回存储在其内存中的内容。

您还应该在错误日志中看到类似于下面的错误，如果没有再次检查您的日志级别/日志路径。

2013/10/07 11:01:09 [crit] 3307#0: *33 open() "/var/lib/nginx/tmp/proxy/2/00/0000000002" failed (13: Permission denied) while reading upstream