nginx配置php-fpm和php通信

2018年10月20日23:27:061 915字阅读3分3秒

一、概述

php-fpm是一种通信方式，使得nginx可以通过cgi和php之间快速通信。nginx的提供了一份默认的php-fpm的配置：

#location ~ \.php$ {
#    root           html;
#    fastcgi_pass   127.0.0.1:9000;
#    fastcgi_index  index.php;
#    fastcgi_param  SCRIPT_FILENAME  /scripts$fastcgi_script_name;
#    include        fastcgi_params;
#}

#location ~ \.php$ {

# root html;

# fastcgi_pass 127.0.0.1:9000;

# fastcgi_index index.php;

# fastcgi_param SCRIPT_FILENAME /scripts$fastcgi_script_name;

# include fastcgi_params;

fastcgi_pass指定了和php-fpm通信的地址和端口，这段配置可能可以拿过来直接使用，但是也可能会报错：

[error] 20591#0: *14 FastCGI sent in stderr: "Primary script unknown" while reading response header from upstream, client: 127.0.0.1, server: localhost, request: "GET / HTTP/1.1", upstream: "fastcgi://unix:/usr/local/php/var/run/php-fpm.sock:", host: "127.0.0.1"

1	[error] 20591#0: *14 FastCGI sent in stderr: "Primary script unknown" while reading response header from upstream, client: 127.0.0.1, server: localhost, request: "GET / HTTP/1.1", upstream: "fastcgi://unix:/usr/local/php/var/run/php-fpm.sock:", host: "127.0.0.1"

这个情况下需要把配置中的：

fastcgi_param  SCRIPT_FILENAME  /scripts$fastcgi_script_name;

1	fastcgi_param SCRIPT_FILENAME /scripts$fastcgi_script_name;

修改成以下内容：

fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;

1	fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;

1.1 第一个php页面

在/webroot/html/php目录下创建一个index.php文件，里面的内容为：

<?php
    echo phpinfo();
?>

<?php

echo phpinfo();

然后在nginx中增加一段配置：

> cat conf/d2.dyxmq.cn.conf 
server {
  listen 80;
  server_name d2.dyxmq.cn; # 配置一个域名d2.dyxmq.cn

  location /php/ { # 访问目录
    root /webroot/html/; # php的根目录
    index index.php; # 索引文件
  }
  location ~ \.php$ {
    root /webroot/html/;
    fastcgi_pass 127.0.0.1:9000; # php-fpm的地址，默认监听9000端口
    fastcgi_index  index.php;
    fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
    include fastcgi_params;
  }

  access_log logs/php_access.log main;
  error_log logs/php_error.log;
}
> sudo service nginx reload # 更新nginx配置

> cat conf/d2.dyxmq.cn.conf

server {

listen 80;

server_name d2.dyxmq.cn; # 配置一个域名d2.dyxmq.cn

location /php/ { # 访问目录

root /webroot/html/; # php的根目录

index index.php; # 索引文件

}

location ~ \.php$ {

root /webroot/html/;

fastcgi_pass 127.0.0.1:9000; # php-fpm的地址，默认监听9000端口

fastcgi_index index.php;

fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;

include fastcgi_params;

}

access_log logs/php_access.log main;

error_log logs/php_error.log;

}

> sudo service nginx reload # 更新nginx配置

在浏览器中打开https://d2.dyxmq.cn/php/，将会显示如下信息：

nginx配置php-fpm和php通信

二、修改fastcgi的监听方式为socket

nginx和php-fpm是通过本地的9000端口来通信的，它们此时是基于tcp连接来的。在同一台机器上，tcp的握手会浪费很多的通信时间，可以考虑把它们的通信方式改成unix socket。

修改php-fpm的配置文件/usr/local/php/etc/php-fpm.d/www.conf，查找listen：

# 注释掉本行
; listen = 127.0.0.1:9000
# socket文件的目录，保证启动用户有权限访问到上级目录
listen = /usr/local/php/var/run/php-fpm.sock

# 注释掉本行

; listen = 127.0.0.1:9000

# socket文件的目录，保证启动用户有权限访问到上级目录

listen = /usr/local/php/var/run/php-fpm.sock

nginx配置中的fastcgi_pass也改成：

fastcgi_pass unix:/usr/local/php/var/run/php-fpm.sock;

1	fastcgi_pass unix:/usr/local/php/var/run/php-fpm.sock;

重新载入nginx并重启php-fpm（一定要重启php-fpm），在浏览器中打开页面应该也能和开始一样显示php相关信息。如果遇到错误：

[crit] 20721#0: *16 connect() to unix:/usr/local/php/var/run/php-fpm.sock failed (13: Permission denied) while connecting to upstream, client: 127.0.0.1, server: localhost, request: "GET / HTTP/1.1", upstream: "fastcgi://unix:/usr/local/php/var/run/php-fpm.sock:", host: "127.0.0.1

1	[crit] 20721#0: *16 connect() to unix:/usr/local/php/var/run/php-fpm.sock failed (13: Permission denied) while connecting to upstream, client: 127.0.0.1, server: localhost, request: "GET / HTTP/1.1", upstream: "fastcgi://unix:/usr/local/php/var/run/php-fpm.sock:", host: "127.0.0.1

说明是php-fpm的socket权限有问题，要修改php-fpm的配置文件中的socket用户，然后重启php-fpm即可：