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Nginx 返回 502 Bad Gateway

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Nginx 返回 502 Bad Gateway

我正在尝试设置一个 Nginx 网络服务器，一般如下本指南但使用perusio的配置。当我尝试访问该站点时，我收到 502 Bad Gateway 页面。

搜索错误时我看到一些人报告了这一点设置fastcgi缓冲区大小已经解决了他们的问题。但是，这对我不起作用。尽管我的错误日志中的消息与所述的不同：

2013/06/11 10:21:24 [info] 32684#0: Using 32768KiB of shared memory for push module in /etc/nginx/nginx.conf:181
2013/06/11 10:21:24 [alert] 32692#0: epoll_ctl(1, 0) failed (1: Operation not permitted)
2013/06/11 10:21:24 [alert] 32692#0: failed to register channel handler while initializing push module worker (1: Operation not permitted)
2013/06/11 10:21:24 [alert] 32691#0: epoll_ctl(1, 0) failed (1: Operation not permitted)
2013/06/11 10:21:24 [alert] 32691#0: failed to register channel handler while initializing push module worker (1: Operation not permitted)
2013/06/11 10:21:25 [alert] 32686#0: cache manager process 32691 exited with fatal code 2 and cannot be respawned

搜索此错误，似乎nginx没有与 通信php5-fpm。我已经验证正在php5-fpm运行：

$ ps auxw | grep php
root       853  0.0  0.8 290416  4504 ?        Ss   10:21   0:00 php-fpm: master process (/etc/php5/fpm/php-fpm.conf)
www-data   854  0.0  0.6 290416  3488 ?        S    10:21   0:00 php-fpm: pool www      
www-data   855  0.0  0.6 290416  3488 ?        S    10:21   0:00 php-fpm: pool www      
kyle       973  0.0  0.2   3824  1072 pts/0    S+   10:42   0:00 grep php

并聆听：

$ netstat --unix -l
Active UNIX domain sockets (only servers)
Proto RefCnt Flags       Type       State         I-Node   Path
unix  2      [ ACC ]     STREAM     LISTENING     43115    /var/run/mysqld/mysqld.sock
unix  2      [ ACC ]     SEQPACKET  LISTENING     2674     /run/udev/control
unix  2      [ ACC ]     STREAM     LISTENING     4772     /var/run/fail2ban/fail2ban.sock
unix  2      [ ACC ]     STREAM     LISTENING     43450    /var/run/php5-fpm.sock
unix  2      [ ACC ]     STREAM     LISTENING     4792     @/tmp/fam-root-

我的nginx.conf包含所以它应该尝试通过 Unix 套接字upstream_phpcgi_unix.conf连接：php5-fpm

## Add as many servers as needed. Cf. http://wiki.nginx.org/HttpUpstreamModule.
upstream phpcgi {
    ## If your version of Nginx doesn't have the fair load balancer:
    ## https://github.com/gnosek/nginx-upstream-fair comment out the
    ## following line.
    fair;
    server unix:/var/run/php-fpm.sock;
    server unix:/var/run/php-fpm-zwei.sock;
    ## Create a backend connection cache. Note that this requires
    ## Nginx version greater or equal to 1.1.4.
    ## Cf. http://nginx.org/en/CHANGES. Comment out the following
    ## line if that's not the case.
    keepalive 5;
}

## Add a third pool as a fallback.
upstream phpcgi_backup {
    server unix:/var/run/php-fpm-bkp.sock;
    ## Create a backend connection cache. Note that this requires
    ## Nginx version greater or equal to 1.1.4.
    ## Cf. http://nginx.org/en/CHANGES. Comment out the
    ## following line if that's not the case.
    keepalive 1;
}

我还应该看什么？

答案1

我能够通过使用aptitude purge删除所有 PHP 包及其配置文件以及nginx.然后，我根据需要单独重新安装了每个 PHP 包。我也用过perusio 的 PHP-FPM配置文件。

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