Nginx虚拟主机配置

阅读数: 次 2017-08-26

一、前言

之前我们已经安装Nginx和PHP,以及完美的成功整合，今天我们讲解nginx的虚拟主机的如何配置

二、虚拟主机

1、虚拟主机配置

进入 /usr/local/nginx/conf 目录，创建vhost文件夹 mkdir vhost
进入 vhost 目录，创建default.conf,复制以下代码到该文件下：

server {
    # Standard virtualhost
    listen 9888;
    #server_name localhost;
    root "/home/www/laravel5.4";

    index index.php;

    charset utf-8;
    sendfile off;

    client_max_body_size 100m;

    access_log off;
    error_log  /var/log/nginx/nginx-vhost.log error;

    location / {
        try_files $uri $uri/ /index.php?$query_string;
    }

    location ~ \.php$ {
        # Pass to FastCGI
        fastcgi_split_path_info ^(.+\.php)(/.+)$;
        fastcgi_pass unix:/tmp/php-cgi.sock;
        fastcgi_index index.php;
        include fastcgi_params;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        fastcgi_intercept_errors off;
        fastcgi_buffer_size 64k;
        fastcgi_buffers 4 64k;
    }

    location ~ /\.ht {
        deny all;
    }

    # Send requests to /socket.io to Node.js server

}

监听9888端口，默认访问根目录 /home/www/laravel5.4

2、修改nginx配置

添加 include vhost/*.conf,加载虚拟主机配置文件。重启nginx nginx -s reload

查看监听状态
netstat -atunlp

vhost
说明虚拟主机端口监听成功

3、安全组规则

登陆阿里云控制台，添加安全组规则设置允许9888端口访问

4、访问虚拟主机端口

在 /home/www/laravel5.4 目录创建index.php

<?php

    echo " Hello World ";
>

在浏览器阿里云外网ip xx.xx.xx.xx:9888

vhost

wget 127.0.0.1:9888
curl 127.0.0.1:9888

linux本地访问提示502错误

window ping tcping64 xx.xx.xx.xx:9888 tcping安装教程

tcping64 xx.xx.xx.xx 9888

Probing xx.xx.xx.xx:9888/tcp - Port is open - time=29.194ms
Probing xx.xx.xx.xx:9888/tcp - Port is open - time=32.686ms
Probing xx.xx.xx.xx:9888/tcp - Port is open - time=28.986ms
Probing xx.xx.xx.xx:9888/tcp - Port is open - time=32.696ms

Ping statistics for xx.xx.xx.xx:9888
     4 probes sent.
     4 successful, 0 failed.
Approximate trip times in milli-seconds:
     Minimum = 28.986ms, Maximum = 32.696ms, Average = 30.890ms

端口是打开的，但就是不能访问

5、问题解决

1、查看虚拟主机自定义的错误日志
error_log /var/log/nginx/nginx-vhost.log error;

2017/08/25 10:00:14 [crit] 23752#0: *134 connect() to unix:/tmp/php-cgi.sock failed (2: No such file or directory)  upstream: "fastcgi://unix:/tmp/php-cgi.sock:"

出现以上问题请检查nginx和php-fpm的配置
nginx虚拟主机配置监听 fastcgi_pass unix:/tmp/php-cgi.sock 为 unix socket 方式;
php-fpm默认监听 listen = 127.0.0.1:9000 为 TCP socket, 两者不一致

; 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 IPv4 address on
;                            a specific port;
;   '[ip:6:addr:ess]:port' - to listen on a TCP socket to a specific IPv6 address on
;                            a specific port;
;   'port'                 - to listen on a TCP socket to all addresses
;                            (IPv6 and IPv4-mapped) on a specific port;
;   '/path/to/unix/socket' - to listen on a unix socket.
; Note: This value is mandatory.
listen = 127.0.0.1:9000

其中fastcgi_pass为配置nginx与php-fpm的交互路径，一般有两种方式
sock方式：fastcgi_pass unix:/tmp/php-cgi.sock;
http方式：fastcgi_pass 127.0.0.1:9000;
任选其中一种即可，但必须和php-fpm的配置一致

这里我们使用 fastcgi_pass 127.0.0.1:9000;
nginx重启后浏览器访问显示 “Hello World!”,so 配置成功！

三、TCP socket和unix socket

1、TCP和unix domain socket方式对比

其中TCP是IP加端口,可以跨服务器.而UNIX Domain Socket不经过网络,只能用于Nginx跟PHP-FPM都在同一服务器的场景

TCP是使用TCP端口连接127.0.0.1:9000
Socket是使用unix domain socket连接套接字/dev/shm/php-cgi.sock（很多教程使用路径/tmp，而路径/dev/shm是个tmpfs，速度比磁盘快得多）

fastcgi_pass unix:/tmp/php-cgi.sock
fastcgi_pass 127.0.0.1:9000

理论上，unix socket 不走网络，效率高一些，但稳定性不是很理想，看这个测试 http://blog.csdn.net/liv2005/article/details/7741732

2、路径

UNIX Domain Socket:
Nginx <=> socket <=> PHP-FPM
TCP Socket(本地回环):
Nginx <=> socket <=> TCP/IP <=> socket <=> PHP-FPM
TCP Socket(Nginx和PHP-FPM位于不同服务器):
Nginx <=> socket <=> TCP/IP <=> 物理层 <=> 路由器 <=> 物理层 <=> TCP/IP <=> socket <=> PHP-FPM

4、mysql连接方式

像mysql命令行客户端连接mysqld服务也类似有这两种方式:
使用Unix Socket连接(默认):
mysql -uroot -p –protocol=socket –socket=/tmp/mysql.sock
使用TCP连接:
mysql -uroot -p –protocol=tcp –host=127.0.0.1 –port=3306