【发布时间】：2015-05-07 17:12:24
【问题描述】：
我最近将我的 magento 从 1.5 升级到 1.9，当我将某个产品添加到购物篮时，我开始收到此错误：502 Bad Gateway
var/log/ 文件夹中没有日志条目：
所以，我查看了我的 nginx 错误，并在 nginx-errors.log 中找到了以下条目：
2015/04/09 10:58:03 [error] 15208#0: *3 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: 46.xxx.xxx.xxx, server: dev.my-domain.co.uk, request: "POST /checkout/cart/add/uenc/aHR0cDovL2Rldi5zYWx2ZW8uY28udWsvdGludGktYmF0aC1wYWludGluZy1zb2FwLTcwbWwuaHRtbD9fX19TSUQ9VQ,,/product/15066/form_key/eYLc3lQ35BSrk6Pa/ HTTP/1.1", upstream: "fastcgi://unix:/var/run/php-fcgi-www-data.sock:", host: "dev.my-domain.co.uk", referrer: "http://dev.my-domain.co.uk/tinti-bath-painting-soap-70ml.html"
2015/04/09 11:04:42 [error] 15208#0: *13 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: 46.xxx.xxx.xxx, server: dev.my-domain.co.uk, request: "POST /checkout/cart/add/uenc/aHR0cDovL2Rldi5zYWx2ZW8uY28udWsvdGludGktYmF0aC1wYWludGluZy1zb2FwLTcwbWwuaHRtbD9fX19TSUQ9VQ,,/product/15066/form_key/eYLc3lQ35BSrk6Pa/ HTTP/1.1", upstream: "fastcgi://unix:/var/run/php-fcgi-www-data.sock:", host: "dev.my-domain.co.uk", referrer: "http://dev.my-domain.co.uk/tinti-bath-painting-soap-70ml.html"
2015/04/09 11:05:03 [error] 15208#0: *16 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: 46.xxx.xxx.xxx, server: dev.my-domain.co.uk, request: "POST /checkout/cart/add/uenc/aHR0cDovL2Rldi5zYWx2ZW8uY28udWsvdGludGktYmF0aC1wYWludGluZy1zb2FwLTcwbWwuaHRtbD9fX19TSUQ9VQ,,/product/15066/form_key/eYLc3lQ35BSrk6Pa/ HTTP/1.1", upstream: "fastcgi://unix:/var/run/php-fcgi-www-data.sock:", host: "dev.my-domain.co.uk", referrer: "http://dev.my-domain.co.uk/tinti-bath-painting-soap-70ml.html"
2015/04/09 11:12:07 [error] 15273#0: *1 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: 46.xxx.xxx.xxx, server: dev.my-domain.co.uk, request: "POST /checkout/cart/add/uenc/aHR0cDovL2Rldi5zYWx2ZW8uY28udWsvdGludGktYmF0aC1wYWludGluZy1zb2FwLTcwbWwuaHRtbD9fX19TSUQ9VQ,,/product/15066/form_key/eYLc3lQ35BSrk6Pa/ HTTP/1.1", upstream: "fastcgi://unix:/var/run/php-fcgi-www-data.sock:", host: "dev.my-domain.co.uk", referrer: "http://dev.my-domain.co.uk/tinti-bath-painting-soap-70ml.html"
我已经在自定义 LEMP 堆栈上安装了 magento，以下是配置：
- nginx.conf
- fastcgi_params
- dev.my-domain.co.uk.conf (nginx 虚拟主机)
- www-data.conf（php-fpm 池配置）
仅当我将特定产品添加到升级后的 magento 中的购物篮时才会出现此错误，并且每次发生错误时，我都会看到一个 core.XXXXX 文件（大约 350mb）在 public_html 文件夹中。
知道为什么我的 php-fpm 会这样崩溃吗？如何找到原因并解决？
这是我的 Linux (CentOS) 服务器上的最后一个条目，当我运行 dmesg 命令时：
php-fpm[14862]: segfault at 7fff38236ff8 ip 00000000005c02ba sp 00007fff38237000 error 6 in php-fpm[400000+325000]
php-fpm[15022]: segfault at 7fff38351ff0 ip 00000000005bf6e5 sp 00007fff38351fb0 error 6 in php-fpm[400000+325000]
php-fpm[15021]: segfault at 7fff38351ff0 ip 00000000005bf6e5 sp 00007fff38351fb0 error 6 in php-fpm[400000+325000]
php-fpm[15156]: segfault at 7fff38351ff0 ip 00000000005bf6e5 sp 00007fff38351fb0 error 6 in php-fpm[400000+325000]
php-fpm[15024]: segfault at 7fff38351ff0 ip 00000000005bf6e5 sp 00007fff38351fb0 error 6 in php-fpm[400000+325000]
php-fpm[15223]: segfault at 7fff8d1d5fd8 ip 00000000005c02ba sp 00007fff8d1d5fe0 error 6 in php-fpm[400000+325000]
php-fpm[15222]: segfault at 7fff8d1d5fd8 ip 00000000005c02ba sp 00007fff8d1d5fe0 error 6 in php-fpm[400000+325000]
php-fpm[15225]: segfault at 7fff8d1d5fd8 ip 00000000005c02ba sp 00007fff8d1d5fe0 error 6 in php-fpm[400000+325000]
php-fpm[15227]: segfault at 7fff8d1d5fd8 ip 00000000005c02ba sp 00007fff8d1d5fe0 error 6 in php-fpm[400000+325000]
php-fpm[15362]: segfault at 7fff3118afd0 ip 00000000005c0ace sp 00007fff3118afa0 error 6 in php-fpm[400000+325000]
我用 gdb 分析了核心转储，这是我在前两帧看到的：http://pastebin.com/raw.php?i=aPvB1sWv（对我来说没有多大意义）...
【问题讨论】：
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我在别处读到升级到 php 5.6.x 可能会有所帮助，所以我这样做了 - 但错误仍在发生。