参考
https://www.cnblogs.com/liaojie970/p/6594350.html
RPM安装httpd
# yum -y install 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.
修改配置文件
# 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
配置WEB站点 （假设使用/wwwroot目录下的文档）
//创建两个网站的目录结构及测试用页面文件
# mkdir /wwwroot/www -p
# echo "www.linuxidc.local" > /wwwroot/www/index.html
# mkdir /wwwroot/crm
# echo "crm.linuxidc.local" > /wwwroot/crm/index.html
//配置虚拟机主机
# cd /etc/httpd/
# mkdir vhost-conf.d
# echo "Include vhost-conf.d/*.conf" >> conf/httpd.conf
# vi /etc/httpd/vhost-conf.d/vhost-name.conf
<VirtualHost *:80>
ServerName www.linuxidc.local
DocumentRoot /wwwroot/www/
</VirtualHost>
<Directory /wwwroot/www/>
Require all granted
</Directory>
<VirtualHost *:80>
ServerName crm.linuxidc.local
DocumentRoot /wwwroot/crm/
</VirtualHost>
<Directory /wwwroot/crm/>
Require ip 192.168.188.0/24
</Directory>
//添加如下内容
<VirtualHost *:80>
ServerNamewww.linuxidc.local
DocumentRoot /wwwroot/www/
</VirtualHost>
<Directory /wwwroot/www/>
Requireall granted
</Directory>
<VirtualHost *:80>
ServerNamecrm.linuxidc.local
DocumentRoot /wwwroot/crm/
</VirtualHost>
<Directory /wwwroot/crm/>
Require ip 192.168.188.0/24 //可以设置访问限制
</Directory>
systemctl start httpd.service
根目录在/var/www/html下，有些时候我们可