apache中配置虚拟主机的作用（apache基于端口创建虚拟主机的示例）

[root@localhost httpd]# vim /etc/httpd/conf/httpd.conf
在主配置文件里面注释下面这行内容
#DocumentRoot "/var/www/html"

找到Listen行，在原有行Listen 80行的基础上， 在添加一行
Listen 8080 
Listen 81 

[root@localhost httpd]#vim /etc/httpd/conf.d/virtualhost.conf
<VirtualHost 192.168.87.131:80>
  DocumentRoot "/var/www/a"
  ServerName    www.a.com
</VirtualHost>
<VirtualHost 192.168.87.131:8080>
  DocumentRoot "/var/www/b"
  ServerName    www.b.com
</VirtualHost>
<VirtualHost 192.168.87.131:81
  DocumentRoot "/var/www/c"
  ServerName    www.c.com
</VirtualHost>

[root@localhost conf.d]# cd/var/www 
[root@localhost www]# mkdir a b c
[root@localhost www]# echo welcome to www.a.com >> ./a/index.html
[root@localhost www]# echo welcome to www.b.com >> ./b/index.html
[root@localhost www]# echo welcome to www.c.com >> ./c/index.html

[root@localhost ~]#systemctl restart httpd