http实现虚拟主机的配置
虚拟主机，简单的说指一个物理机服务多个站点，每个站点可通过一个或多个虚拟主机来实现http有3中类型的虚拟主机：
（1）基于IP,配置时一定要配置好所以的IP
（2）基于PORT，配置时一定要启用Listen PORT这一项，开启所有的监听端口
(3)基于FQDN，配置时要启用NameVirtualHost这一项
相关配置
配置前提：
已经安装好httpd服务器
配置步骤：
1. 基于端口的虚拟主机配置
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#vim/etc/httpd/conf/httpd.conf
…..添加如下内容………..
Listen 8080
………………….
<VirtualHost *:80>
ServerName www.a.com
DocumentRoot/vhosts/a.com/htdocs/
</VirtualHost>
<VirtualHost *:8080>
ServerName www.b.org
DocumentRoot/vhosts/b.org/htdocs
</VirtualHost>
# mkdir/vhosts/{a.com,b.org}/htdocs –pv
# cd /vhosts/a.com/htdocs/
# vimindex.html
<h1>a.com</h1>
#vim /vhosts/b.org/htdocs/index.html
<h1>b.org</h1>
#vim /etc/hosts
…………添加
192.168.1.11 www.a.com
192.168.1.12 www.b.org
#httpd –t
# service httpd restart
Stopping httpd: [ OK]
Starting httpd: httpd:Could not reliably determine the server's fully qualified domain name, using172.16.33.1 for ServerName
到这里我们基于端口的虚拟主机就配置完成，现在在浏览器中输入：http://192.168.1.11:8080/http://192.168.1.11:80/观察测试结果
2. 基于FQDN的虚拟主机的配置
编辑配置文件，具体内容如下：
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NameVirtualHost 192.168.1.11:80 #启用NameVirtualHost 这一项
……….
<VirtualHost192.168.1.11:80>
ServerName www.a.com
DocumentRoot /vhosts/a.com/htdocs/
</VirtualHost>
<VirtualHost192.168.1.11:80>
ServerName www.b.org
DocumentRoot /vhosts/b.org/htdocs
</VirtualHost>
<VirtualHost192.168.1.11:80>
ServerName www.c.net
DocumentRoot /vhosts/c.net/htdocs
</VirtualHost>
# mkdir/vhosts/c.net/htdocs -p
#vim /vhosts/c.net/htdocs/index.html
<h1>c.net</h1>
# vim/etc/hosts
……添加…..
192.168.1.11 www.a.com
192.168.1.11 www.b.org
192.168.1.11 www.c.net
基于FQDN的虚拟主机配置完毕，下面进行访问测试：# curlhttp://www.c.net<h1>c.net</h1># curlhttp://www.b.org<h1>b.org</h1># curlhttp://www.a.com<h1>a.com</h1>
[*]3. 基于IP的虚拟主机配置
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#ifconfig eth0:0 192.168.1.21
# vim/etc/httpd/conf/httpd.conf
………..
<VirtualHost192.168.1.11:80>
ServerName www.a.com
DocumentRoot /vhosts/a.com/htdocs/
</VirtualHost>
<VirtualHost192.168.1.21:80>
ServerName www.b.org
DocumentRoot /vhosts/b.org/htdocs/
</VirtualHost>
# httpd-t
httpd: Could not reliablydetermine the server's fully qualified domain name, using 172.16.33.1 forServerName
Syntax OK
# !s
service httpd restart
Stopping httpd:
Starting httpd: httpd:Could not reliably determine the server's fully qualified domain name, using172.16.33.1 for ServerName
到这里我们基于IP的虚拟主机就配置完了，在浏览器中测试输入：http://192.168.1.199/http://192.168.1.101/
[*]4. 基于IP+PORT的虚拟主机的配置
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编辑配置文件/etc/httpd/conf/httpd.conf:
Listen 8080#添加这一项
……………..
<VirtualHost192.168.1.11:80>
ServerName www.a.com
DocumentRoot /vhosts/a.com/htdocs/
</VirtualHost>
<VirtualHost 192.168.1.21:80>
ServerName www.b.org
DocumentRoot /vhosts/b.org/htdocs/
</VirtualHost>
<VirtualHost192.168.1.11:8080>
ServerName www.c.net
DocumentRoot /vhosts/c.net/htdocs/
</VirtualHost>
#httpd -t
#service httpd restart
到这里我们基于IP+PORT的虚拟主机就配置完成了，在浏览器中访问192.168.1.199:80,192.168.1.101:80，192.168.1.101:8080测试，观察结果
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