由于本人很笨，第一次学步骤比较多。想学的可以耐下心来看、来学。
实验环境：ContOS 7，Apache服务器
在ContOS中可以运行一下代码直接下载
[root@localhost ~]# yum install -y httpd下载完可以查看下载的内容
[root@localhost ~]# rpm -ql httpd | less配置Selinux文件
[root@localhost ~]# vim /etc/selinux/config找到并改成下面的
SELINUX=disabled
SELINUXTYPE=targeted
关闭防火墙
[root@localhost ~]# systemctl stop firewalld
[root@localhost ~]# systemctl disable firewalld
Removed symlink /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.
Removed symlink /etc/systemd/system/basic.target.wants/firewalld.service.启动httpd服务，访问测试
[root@localhost ~]# systemctl start httpd然后在浏览器输入你CentOS的ip地址，出现下面的页面说明下载完成。
一：基于多IP地址方式
1.创建配置文件
[root@localhost ~]# cd /etc/httpd/conf.d/
[root@localhost conf.d]# vim virtual.conf在里面将下面代码写入
<VirtualHost 192.168.253.128:80>
ServerName a.com
DocumentRoot "/www/a.com/"
</VirtualHost>
<VirtualHost 192.168.253.129:80>
ServerName b.com
DocumentRoot "/www/b.com/"
</VirtualHost>
2.网卡绑定多个IP（这里我的网卡名是ens33）
[root@localhost conf.d]# ip addr add 192.168.81.137 dev ens33
[root@localhost conf.d]# ip add
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00inet 127.0.0.1/8 scope host lovalid_lft forever preferred_lft foreverinet6 ::1/128 scope host valid_lft forever preferred_lft forever
2: eno33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000link/ether 00:0c:29:5c:ff:91 brd ff:ff:ff:ff:ff:ffinet 192.168.81.136/24 brd 192.168.253.255 scope global dynamic eno16777736valid_lft 1542sec preferred_lft 1542secinet 192.168.81.137/32 scope global eno16777736valid_lft forever preferred_lft foreverinet6 fe80::20c:29ff:fe5c:ff91/64 scope link valid_lft forever preferred_lft forever3.创建虚拟主机a.com和b.com的主页面
[root@localhost conf.d]# mkdir -pv /www/{a.com,b.com}
mkdir: 已创建目录 "/www"
mkdir: 已创建目录 "/www/a.com"
mkdir: 已创建目录 "/www/b.com"[root@localhost conf.d]# vim /www/a.com/index.html进入/a.com/index.html,将下面代码写入
<h1>Hello,a.com</h1>
[root@localhost conf.d]# vim /www/b.com/index.html进入/b.com/index.html，将下面代码写入
<h1>Hello,b.com</h1>
4.检查配置问价是否正常
[root@localhost conf.d]# httpd -t
AH00558: httpd: Could not reliably determine the server's fully qualified domain name, using localhost.localdomain. Set the 'ServerName' directive globally to suppress this message
Syntax OK
5.重启httpd服务
[root@localhost conf.d]# systemctl restart httpd6.打开浏览器，查看结果
二、基于多端口方式
1.创建配置文件
[root@localhost ~]# cd /etc/httpd/conf.d/
[root@localhost conf.d]# vim virtual.conf将下面代码写入（当然里面有的就不写入了）
<VirtualHost 192.168.253.128:80>
ServerName a.com
DocumentRoot "/www/a.com/"
</VirtualHost>
<VirtualHost 192.168.253.128:8080>
ServerName b.com
DocumentRoot "/www/b.com/"
</VirtualHost>
2.修改httpd主配置文件
[root@localhost conf.d]# vim /etc/httpd/conf/httpd.conf在里面找到Listen 80,然后在下面写入一行Listen 8080
3.创建虚拟主机a.com和b.com的主页面（前面已经创建过了就不用重复创建）
4.检查配置文件
[root@localhost conf.d]# httpd -t
AH00558: httpd: Could not reliably determine the server's fully qualified domain name, using localhost.localdomain. Set the 'ServerName' directive globally to suppress this message
Syntax OK5.重启httpd服务
[root@localhost conf.d]# systemctl restart httpd6.打开浏览器，查看结果
三.基于域名的方式
1.创建配置文件
[root@localhost ~]# cd /etc/httpd/conf.d/
[root@localhost conf.d]# vim virtual.conf
写入下面的代码
<VirtualHost *:80>
ServerName a.com
DocumentRoot "/www/a.com/"
</VirtualHost>
<VirtualHost *:80>
ServerName b.com
DocumentRoot "/www/b.com/"
</VirtualHost>
2.修改物理主机hosts文件（C:\Windows\System32\drivers\etc），这里是因为物理机去访问Apache服务器
在hosts文件里面添加
192.168.81.136 a.com
192.168.81.136 b.com
3.物理主机ping域名测试
4.创建虚拟主机a.com和b.com的主页面（这里前面已经创建过了就不重复了）
5.检查配置文件
[root@localhost conf.d]# httpd -t
AH00558: httpd: Could not reliably determine the server's fully qualified domain name, using localhost.localdomain. Set the 'ServerName' directive globally to suppress this message
Syntax OK6.重启httpd服务
[root@localhost conf.d]# systemctl restart httpd7.打开浏览器，查看结果
