nginx配置虚拟主机vhost

首先谈一点自己的理解

   所谓虚拟主机，是说通过几个不同的url地址，都能到达nginx环境，只不过针对不同的url，处理的逻辑不同。
    nginx支持虚拟主机，但是浏览器等客户端不知道，所以虚拟主机的几个地址，应该是都指向nginx所在的ip地址，虚拟主机功能才能正常。

下面来说一下nginx环境下虚拟主机的配置

假设我们需要配置的虚拟主机域名为mail.zjc.com

虚拟主机存放目录为/var/www/mail.zjc.com/web
sudo mkdir -p /var/www/mail.zjc.com/web

创建nginx虚拟主机配置文件
sudo gedit /etc/nginx/sites-available/mail.zjc.com.vhost
内容为(其中php域根据本机php应用情况配置)

server {
       listen80;
       server_name mail.zjc.com;
       root /var/www/mail.zjc.com/web;
       if ($http_host != "mail.zjc.com") {
                 rewrite ^http://mail.zjc.com$request_uripermanent;
       }
       index index.php index.html;
       location = /favicon.ico {
                log_not_foundoff;
                access_logoff;
       }
       location = /robots.txt {
                allow all;
                log_not_foundoff;
                access_logoff;
       }
       # Make sure files with the following extensions do not get loaded by nginx because nginx would display the source code, and these files can contain PASSWORDS!location~* \.(engine|inc|info|install|make|module|profile|test|po|sh|.*sql|theme|tpl(\.php)?|xtmpl)$|^(\..*|Entries.*|Repository|Root|Tag|Template)$|\.php_ {
                deny all;
        }
       # Deny all attempts to access hidden files such as .htaccess, .htpasswd, .DS_Store (Mac).location~ /\. {
                deny all;
                access_logoff;
                log_not_foundoff;
       }
       location~*  \.(jpg|jpeg|png|gif|css|js|ico)$ {
                expires max;
                log_not_foundoff;
       }
       location~ \.php$ {
            try_files$uri =404;
            fastcgi_split_path_info ^(.+\.php)(/.+)$;
            fastcgi_passunix:/var/run/php5-fpm.sock;
            fastcgi_index index.php;
            fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
            include fastcgi_params;
        }
}

因为nginx的主配置文件nginx.conf会自动应用sites-enabled中的配置文件，所以我们需要在sites-enabled中建立一个mail.zjc.com.vhost文件的链接

cd /etc/nginx/sites-enabled
sudo ln -s /etc/nginx/sites-available/mail.zjc.com.vhost www.zjc.com.vhost

重新加载nginx使配置生效
sudo /etc/init.d/nginx reload

好了，接下来在/var/www/mail.zjc.com/web目录下创建一些文件（例如index.php）就可以通过http://mail.zjc.com/index.php来访问了。BTW，记得在hosts中或者DNS上设置mail.zjc.com指向nginx所在的IP地址。