apache部署多功能變數名稱，同個ip部署多個網站

寫個總結筆記，讓以後的自己知道怎麼部署。
首先apache的版本是2.4.7，然後系統是Ubuntu 14.04.1 LTS。（因為好像配置文件和目錄有差異）
首先進到apache2目錄下,

我們要探討的主要是sites-available和sites-enabled根據字面意思，前一個是網站可用的，後一個是網站可用的，然後我們還知道了，sites-enabled裡面的文件是sites-available裡面文件的軟鏈接，所以我們主要改site-available的文件，打開site-available有兩個文件，但我們只需要000-default.conf文件，打開cat文件，代碼如下：

<VirtualHost *:80>
        # The ServerName directive sets the request scheme, hostname and port that
        # the server uses to identify itself. This is used when creating
        # redirection URLs. In the context of virtual hosts, the ServerName
        # specifies what hostname must appear in the request's Host: header to
        # match this virtual host. For the default virtual host (this file) this
        # value is not decisive as it is used as a last resort host regardless.
        # However, you must seothert it for any further virtual host explicitly.
        #ServerName www.example.com

        ServerAdmin webmaster@localhost
        DocumentRoot /var/www/

        # Available loglevels: trace8, ..., trace1, debug, info, notice, warn,
        # error, crit, alert, emerg.
        # It is also possible to configure the loglevel for particular
        # modules, e.g.
        #LogLevel info ssl:warn

        ErrorLog ${APACHE_LOG_DIR}/error.log
        CustomLog ${APACHE_LOG_DIR}/access.log combined

        # For most configuration files from conf-available/, which are
        # enabled or disabled at a global level, it is possible to
        # include a line for only one particular virtual host. For example the
        # following line enables the CGI configuration for this host only
        # after it has been globally disabled with "a2disconf".
        #Include conf-available/serve-cgi-bin.conf
</VirtualHost>

這就是網址配置文件了，而我們要修改的只有被註釋掉的ServerName 功能變數名稱，DocumentRoot 路徑這兩個部分，去掉註釋剩下。

<VirtualHost *:80>
        ServerName #這裡是功能變數名稱地址
        ServerAdmin webmaster@localhost
        DocumentRoot /var/www/          #這裡是路徑
        ErrorLog ${APACHE_LOG_DIR}/error.log
        CustomLog ${APACHE_LOG_DIR}/access.log combined
</VirtualHost>

可以直接添加在下麵，重啟apache就成了。但是上面的優先順序要更高，訪問自己的功能變數名稱會跳轉到你設置的路徑，直接訪問ip還是會到第一個設置的路徑，你也可以選擇刪除。
還有另外一種改法就是新建一個文件，xxx.conf然後內容一樣，

<VirtualHost *:80>
        ServerName #這裡是功能變數名稱地址
        ServerAdmin webmaster@localhost
        DocumentRoot /var/www/          #這裡是路徑
        ErrorLog ${APACHE_LOG_DIR}/error.log
        CustomLog ${APACHE_LOG_DIR}/access.log combined
</VirtualHost>

在創建軟鏈接 ln -s ../sites-avaiable/xxx.conf ../sites-enable/xxx.conf
這樣子也可以實現，但是優先順序還是000-default.conf高。
好了，就是這麼簡單。