虛擬主機的介紹
虛擬主機，簡單的說指一個物理機服務多個站點，每個站點可通過一個或多個虛擬主機來實現
http有3中類型的虛擬主機：
（1）基於IP,配置時一定要配置好所以的IP
（2）基於PORT，配置時一定要啓用Listen PORT這一項，開啓所有的監聽端口
(3)基於FQDN，配置時要啓用NameVirtualHost這一項
相關配置
配置前提：
已經安裝好httpd服務器
配置步驟：
1. 基於端口的虛擬主機配置
#vim/etc/httpd/conf/httpd.conf
…..添加如下內容………..
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
[root@node1 ~]# cd /vhosts/a.com/htdocs/
[root@node1 htdocs]# vimindex.html
<h1>a.com</h1>
[root@node1 htdocs]#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
[root@node1 htdocs]# 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
[ OK ]到這裏我們基於端口的虛擬主機就配置完成，現在在瀏覽器中輸入：
觀察測試結果
2. 基於FQDN的虛擬主機的配置
編輯配置文件，具體內容如下：
NameVirtualHost 192.168.1.11:80 #啓用NameVirtualHost 這一項 ………. <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> [root@node1 htdocs]# mkdir/vhosts/c.net/htdocs -p [root@node1 htdocs]#vim /vhosts/c.net/htdocs/index.html <h1>c.net</h1> [root@node1 vhosts]# 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
基於FQDN的虛擬主機配置完畢，下面進行訪問測試：
[root@node1 vhosts]# curlhttp://www.c.net
<h1>c.net</h1>
[root@node1 vhosts]# curlhttp://www.b.org
<h1>b.org</h1>
[root@node1 vhosts]# curlhttp://www.a.com
<h1>a.com</h1>
3. 基於IP的虛擬主機配置
[root@node1 vhosts]#ifconfig eth0:0 192.168.1.21 [root@node1 vhosts]# 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> [root@node1 vhosts]# httpd-t httpd: Could not reliablydetermine the server's fully qualified domain name, using 172.16.33.1 forServerName Syntax OK [root@node1 vhosts]# !s 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 [ OK ]
到這裏我們基於IP的虛擬主機就配置完了，在瀏覽器中測試輸入：
4. 基於IP+PORT的虛擬主機的配置
編輯配置文件/etc/httpd/conf/httpd.conf: Listen 8080 #添加這一項 …………….. <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
到這裏我們基於IP+PORT的虛擬主機就配置完成了，在瀏覽器中訪問192.168.1.199:80,192.168.1.101:80，192.168.1.101:8080測試，觀察結果