欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页

Nginx php upstream sent unexpected FastCGI record: 3 while reading response head 博客分类: Linux学习笔记web服务器技术MysqlPHP开发  

程序员文章站 2024-02-28 08:24:34
...

调用fastcgi_finish_request时,请求数超过max_requests时产生,fpm发送两次FCGI_END_REQUEST记录

 

测试的脚本及配置:

<?php

 

ignore_user_abort();

fastcgi_finish_request();

sleep(10);

 

?>

 

Nginx configuration

 

upstream fpm

{

    server 127.0.0.1:9000;

    keepalive 1;

}

 

server

{

    ......

    fastcgi_keep_conn on;

    fastcgi_param SCRIPT_NAME /index.php;

    fastcgi_pass fpm;

    ......

}

 

PHP FPM configuration

 

max_children = 1

max_requests = 2

 

Expected result:

----------------

No errors in nginx error log

 

Actual result:

--------------

Every second request is finished with 502 status

 

Nginx error.log contains records:

 

2014/07/07 13:42:58 [error] 11253#0: *1 upstream sent unexpected FastCGI record: 3 while reading response header from upstream, client: 127.0.0.1, server: localhost, request: "GET /nginx_test.phtml HTTP/1.1", upstream: "fastcgi://127.0.0.1:8002", host: "localhost:8081"

 

解决方案:

1. 升级到 php 7.0.16及以上

2. 设置max_requests=0 可能有内存泄露风险

 

参考资源:

http://serverfault.com/questions/827561/nginx-php7-unexpected-fastcgi-record-while-reading-response-header-from-upstre/828203

https://bugs.php.net/bug.php?id=67583