php - Nginx 错误 recv() 失败 (104 : Connection reset by peer)

Question

几天前，我的服务器出现了一些错误。我使用 CentOS 6.5 和 Parallels 12.0.18，Apache 服务器提供动态内容，Nginx 作为代理提供静态内容。

起初，我遇到了以下错误:

[error] 29951#0: *5138862 upstream timed out (110: Connection timed out) while reading response header from upstream, client: 89.7.24.108, server: , request: "GET /page/2/ HTTP/1.1", upstream: "http://ip:7080/page/2/", host: "domain.es", referrer: "http://domain.es/"

然后，我更改了一些配置，比如在我的“httpd.conf”文件中增加 MaxClients 并将这行添加到我的/etc/nginx/conf.d/timeout.conf 文件中:

proxy_connect_timeout       600;
proxy_send_timeout          600;
proxy_read_timeout          600;
send_timeout                600;

一切似乎都很好，直到我再次遇到同样的错误，以及一个新的错误:

[error] 15228#0: *130292 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: 89.130.25.154, server: domain.com, request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:7080/", host: "domain.com"

我在同一台服务器上有两个不同的网站。这就是为什么您会在其中看到两个不同的主机。

问题是:当我遇到这些错误时，我得到了一个“502 Bad Gateway”并且服务器变得非常慢以至于我什至无法使用 SSH 终端登录。我只能通过重置 httpd 服务来暂时修复它。

我知道还有其他与此类似的主题，但我发现的都是 PHP-FPM 的问题，我不使用它。

这是我的 Nginx 配置文件: 用户 nginx； worker_processes 16;

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

events {
    worker_connections  1024;
}

http {
server_names_hash_max_size 2048;
server_names_hash_bucket_size 512;

server_tokens off;

include    mime.types;
default_type  application/octet-stream;

sendfile on;
tcp_nopush on;
tcp_nodelay on;
keepalive_timeout  10;

# Gzip on
gzip on;
gzip_vary on;
gzip_min_length 10240;
gzip_proxied expired no-cache no-store private auth;
gzip_buffers 4 32k;
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_disable "MSIE [1-6]\.";

# Other configurations
ignore_invalid_headers on;
client_max_body_size    8m;
client_header_timeout  3m;
client_body_timeout 3m;
#send_timeout     3m;
connection_pool_size  256;
client_header_buffer_size 4k;
large_client_header_buffers 4 32k;
request_pool_size  4k;
output_buffers   4 32k;
postpone_output  1460;

# Cache most accessed static files
open_file_cache          max=10000 inactive=10m;
open_file_cache_valid    2m;
open_file_cache_min_uses 1;
open_file_cache_errors   on;

# virtual hosts includes
include "/etc/nginx/conf.d/*.conf";
}

这是我的 Nginx 虚拟主机文件: 服务器 { 监听 ip:80 default_server;

server_name domain.es;
server_name www.domain.es;
server_name ipv4.domain.es;

client_max_body_size 128m;

root "/var/www/vhosts/domain.es/httpdocs";
access_log "/var/www/vhosts/system/domain.es/logs/proxy_access_log";
error_log "/var/www/vhosts/system/domain.es/logs/proxy_error_log";

if ($host ~* ^www.domain.es$) {
    rewrite ^(.*)$ http://domain.es$1 permanent;
}

location / {
    proxy_pass http://82.194.74.41:7080;
    proxy_set_header Host             $host;
    proxy_set_header X-Real-IP        $remote_addr;
    proxy_set_header X-Forwarded-For  $proxy_add_x_forwarded_for;
    access_log off;
}

location @fallback {
    proxy_pass http://ip:7080;
    proxy_set_header Host             $host;
    proxy_set_header X-Real-IP        $remote_addr;
    proxy_set_header X-Forwarded-For  $proxy_add_x_forwarded_for;
    access_log off;
}

location ~ ^/plesk-stat/ {
    proxy_pass http://ip:7080;
    proxy_set_header Host             $host;
    proxy_set_header X-Real-IP        $remote_addr;
    proxy_set_header X-Forwarded-For  $proxy_add_x_forwarded_for;
    access_log off;
}

location ~ ^/(.*\.(ac3|avi|bmp|bz2|css|cue|dat|doc|docx|dts|exe|flv|gif|gz|htm|html|ico|img|iso|jpeg|jpg|js|mkv|mp3|mp4|mpeg|mpg|ogg|pdf|png|ppt|pptx|qt|rar|rm|swf|tar|tgz|txt|wav|xls|xlsx|zip))$ {
    access_log off;
    expires 7d;
    add_header Cache-Control public;

 try_files $uri @fallback;
}

include "/var/www/vhosts/system/domain.es/conf/vhost_nginx.conf";
}

还有一些我在 Apache (httpd.conf) 中使用的配置变量:

<IfModule prefork.c>
StartServers      14
MinSpareServers    8
MaxSpareServers   14
ServerLimit      1000
MaxClients       1000
MaxRequestsPerChild  2000
</IfModule>

非常感谢您!

Answer 1

在我的例子中，缺少一个 php 扩展程序，在我将其关闭后，它又恢复了!检查 /var/log/messages 以查看是否有任何 segfault。