/************************************************************************************************

 *  nginx: [emerg] "fastcgi_pass" directive is duplicate in /etc/nginx/sites-enabled/default:57

 * 说明：

 *     VPS安装Ubuntu 16.04，调一下Nginx的PHP Server。

 *

 *                                              2017-9-26 深圳 龙华樟坑村 曾剑锋

 **********************************************************************************************/

一、参考文档：

    . 启动 nginx 失败 "fastcgi_pass" directive is duplicate

        http://www.cnblogs.com/cgjcgs/p/5310031.html

二、错误现象：

    root@localhost:/var/www/html# systemctl status nginx.service

    鈼?[0m nginx.service - A high performance web server and a reverse proxy server

       Loaded: loaded (/lib/systemd/system/nginx.service; enabled; vendor preset: enabled)

       Active: failed (Result: exit-code) since Tue -- :: EDT; 1min 20s ago

      Process:  ExecStartPre=/usr/sbin/nginx -t -q -g daemon on; master_process on; (code=exited, status=/FAILURE)

    Sep  :: localhost systemd[]: Starting A high performance web server and a reverse proxy server...

    Sep  :: localhost nginx[]: nginx: [emerg] "fastcgi_pass" directive is duplicate in /etc/nginx/sites-enabled/default:

    Sep  :: localhost nginx[]: nginx: configuration file /etc/nginx/nginx.conf test failed

    Sep  :: localhost systemd[]: nginx.service: Control process exited, code=exited status=

    Sep  :: localhost systemd[]: Failed to start A high performance web server and a reverse proxy server.

    Sep  :: localhost systemd[]: nginx.service: Unit entered failed state.

    Sep  :: localhost systemd[]: nginx.service: Failed with result 'exit-code'.

三、解决办法：

    . 修改文件：/etc/nginx/sites-enabled/default

    . 如下：

        location ~ \.php$ {

            ...

            #    fastcgi_pass 127.0.0.1:; （此处和下面重复，注释掉）

            #    # With php5-fpm:

                fastcgi_pass unix:/var/run/php5-fpm.sock;（此处和上面重复）

            ...

        }