今天在安装配置Ubuntu系统下的PHP环境，首先安装：



sudo apt-get install mysql-server
sudo apt-get install nginx
sudo apt-get install php5-fpm
sudo apt-get install php5-cli php5-gd php5-mysql



    接着修改nginx配置：



vim /etc/nginx/sites-available/default

server {
        listen 80 default_server;
        server_name localhost;
        root /var/www;
        index index.php index.html;

        location / {
                # First attempt to serve request as file, then
                # as directory, then fall back to displaying a 404.
                try_files $uri $uri/ =404;
                # Uncomment to enable naxsi on this location
                # include /etc/nginx/naxsi.rules
        }
    
        # php5-fpm 配置信息
        location ~ \.php$ {
        #       fastcgi_split_path_info ^(.+\.php)(/.+)$;
        #       # NOTE: You should have "cgi.fix_pathinfo = 0;" in php.ini
        #
        #       # With php5-cgi alone:
                 fastcgi_pass 127.0.0.1:9000;
        #       # With php5-fpm:
        #       fastcgi_pass unix:/var/run/php5-fpm.sock;
                 fastcgi_index index.php;
                 include fastcgi_params;
        }

}



     然后启动nginx、php5-fpm,访问localhost 下的phpinfo.php 文件时，总算报错：502.

     前前后后检查了几遍后，终于发现问题所在：php5-fpm监听方式错误。

      打开php5-fpm配置文件（/etc/php5/fpm/pool.d/www.conf），发现其监听方式为socket，而不是9000端口，如下所示：



; The address on which to accept FastCGI requests.
; Valid syntaxes are:
;   'ip.add.re.ss:port'    - to listen on a TCP socket to a specific address on
;                            a specific port;
;   'port'                 - to listen on a TCP socket to all addresses on a
;                            specific port;
;   '/path/to/unix/socket' - to listen on a unix socket.
; Note: This value is mandatory.
listen = /var/run/php5-fpm.sock



      于是修正nginx中对应配置即可，reload后再访问就ok了！

      网上有人说ubuntu 1210默认安装php5-fpm无监听9000端口，本人无考证。

      对于两者性能找了篇文章，仅供参考：

      ​​https://rtcamp.com/tutorials/php/fpm-sysctl-tweaking/​​

      ​​http://www.cnxct.com/default-configuration-and-performance-of-nginx-phpfpm-and-tcp-socket-or-unix-domain-socket/​​