# yum -yinstall httpd
//安装httpd会自动安装一下依赖包：
apr
apr-util
httpd-tools
mailcap
# rpm -qi httpd
Name       : httpd
Version    : 2.4.6
Release    : 18.el7.centos
Architecture: x86_64
Install Date: Mon 11 Aug 2014 02:44:55 PMCST
Group      : System Environment/Daemons
Size       : 9793373
License    : ASL 2.0
Signature  : RSA/SHA256, Wed 23 Jul 2014 11:21:22 PM CST, Key ID 24c6a8a7f4a80eb5
Source RPM : httpd-2.4.6-18.el7.centos.src.rpm
Build Date : Wed 23 Jul 2014 10:49:10 PM CST
Build Host : worker1.bsys.centos.org
Relocations : (not relocatable)
Packager   : CentOS BuildSystem <http://bugs.centos.org>
Vendor     : CentOS
URL        : http://httpd.apache.org/
Summary    : Apache HTTP Server
Description :
The Apache HTTP Server is a powerful,efficient, and extensible web server.

# cd
/etc/httpd/conf
# ls
httpd.conf 
magic
#cp httpd.conf httpd.conf.origin    //将原有配置文件备份
# more httpd.conf
//查看配置文件,我们注意到以一配置：
DocumentRoot"/var/www/html"
  
//特别是要注意这个配置
//这是Apache 2.4的一个新的默认值，拒绝所有的请求！
  
<Directory />
   AllowOverride none
    Require all denied
</Directory>
  
//设置为自动启动
# systemctl enable httpd.service
ln -s‘/usr/lib/systemd/system/httpd.service‘ ‘/etc/systemd/system/multi-user.target.wants/httpd.service‘
//在centos7中chkconfig httpd on 被替换成 systemctl enable httpd

//创建两个网站的目录结构及测试用页面文件
# mkdir/wwwroot/www
# echo"www.bigcloud.local" > /wwwroot/www/index.html
  
# mkdir/wwwroot/crm
# echo"crm.bigcloud.local" > /wwwroot/crm/index.html
 //配置虚拟机主机
# cd/etc/httpd/
# mkdirvhost-conf.d
# echo"Include vhost-conf.d/*.conf" >> conf/httpd.conf
  
# vi/etc/httpd/vhost-conf.d/vhost-name.conf
//添加如下内容
<VirtualHost *:80>
   ServerNamewww.bigcloud.local
  DocumentRoot /wwwroot/www/
</VirtualHost>
<Directory /wwwroot/www/>
    Requireall granted
</Directory>
  
<VirtualHost *:80>
   ServerNamecrm.bigcloud.local
  DocumentRoot /wwwroot/crm/
</VirtualHost>
<Directory /wwwroot/crm/>
   Require ip192.168.188.0/24   //可以设置访问限制
</Directory>