配置虚拟主机

1、安装多个apache实现---占用资源太多

2、多个ip---------------------不适合大规模虚拟主机（几十万）

3、多个域名------------------CGI不安全

4、重写------------------------推荐

步骤/方法

1.      基于ip地址的虚拟主机
Listen 80

DocumentRoot /home/httpd/html1
ServerName www.ok1.com
ErrorLog /usr/local/apache/logs/error1_log
CustomLog /usr/local/apache/logs/access1_log combined


DocumentRoot /home/httpd/html2
ServerName www.ok2.com
ErrorLog /usr/local/apache/logs/error2_log
CustomLog /usr/local/apache/logs/access2_log combined

2.      基于IP 和多端口的虚拟主机配置
Listen 172.20.30.40:80
Listen 172.20.30.40:8080
Listen 172.20.30.50:80
Listen 172.20.30.50:8080


DocumentRoot /www/example1-80
ServerName www.example1.com



DocumentRoot /www/example1-8080
ServerName www.example1.com


DocumentRoot /www/example2-80
ServerName www.example1.org


DocumentRoot /www/example2-8080
ServerName www.example2.org

3.      单个IP 地址的服务器上基于域名的虚拟主机配置
# Ensure that Apache listens on port 80
Listen 80
# Listen for virtual host requests on all IP addresses
NameVirtualHost *:80

DocumentRoot /www/example1
ServerName www.example1.com
ServerAlias example1.com. *.example1.com
# Other directives here


DocumentRoot /www/example2
ServerName www.example2.org
# Other directives here

4.      在多个IP 地址的服务器上配置基于域名的虚拟主机
Listen 80
# This is the "main" server running on 172.20.30.40
ServerName server.domain.com
DocumentRoot /www/mainserver

# This is the other address
NameVirtualHost 172.20.30.50

DocumentRoot /www/example1
ServerName www.example1.com
# Other directives here ...


DocumentRoot /www/example2
ServerName www.example2.org
# Other directives here ...

5.      在不同的端口上运行不同的站点(基于多端口的服务器上配置基于域名的虚拟主机)
Listen 80
Listen 8080
NameVirtualHost 172.20.30.40:80
NameVirtualHost 172.20.30.40:8080

ServerName www.example1.com
DocumentRoot /www/domain-80


ServerName www.example1.com
DocumentRoot /www/domain-8080


ServerName www.example2.org
DocumentRoot /www/otherdomain-80


ServerName www.example2.org
DocumentRoot /www/otherdomain-8080

6.      基于域名和基于IP 的混合虚拟主机的配置
Listen 80
NameVirtualHost 172.20.30.40

DocumentRoot /www/example1
ServerName www.example1.com


DocumentRoot /www/example2
ServerName www.example2.org


DocumentRoot /www/example3
ServerName www.example3.net