[root@host ~]$httpd -v
Server version: Apache/2.4.6 (CentOS)
Server built:  Nov 14 2016 18:04:44
[root@host ~]$cat /etc/centos-release
CentOS Linux release 7.3.1611 (Core) 

[root@host ~]$systemctl start httpd.service 
[root@host ~]$systemctl status httpd.service 
● httpd.service - The Apache HTTP Server
  Loaded: loaded (/usr/lib/systemd/system/httpd.service; enabled; vendor preset: disabled)
  Active: active (running) since Thu 2017-06-01 03:03:12 CST; 5s ago           #  active 表示正常运行
   Docs: man:httpd(8)
      man:apachectl(8)
 Process: 6473 ExecStop=/bin/kill -WINCH ${MAINPID} (code=exited, status=0/SUCCESS)
 Main PID: 6485 (httpd)
  Status: "Processing requests..."
  CGroup: /system.slice/httpd.service
      ├─6485 /usr/sbin/httpd -DFOREGROUND
      ├─6486 /usr/sbin/httpd -DFOREGROUND
      ├─6487 /usr/sbin/httpd -DFOREGROUND
      ├─6489 /usr/sbin/httpd -DFOREGROUND
      ├─6490 /usr/sbin/httpd -DFOREGROUND
      └─6572 /usr/sbin/httpd -DFOREGROUND

Jun 01 03:03:11 host systemd[1]: Starting The Apache HTTP Server...
Jun 01 03:03:12 host systemd[1]: Started The Apache HTTP Server.

[root@host ~]$ip a show ens38  # 查看ip 
3: ens38:  mtu 1500 qdisc pfifo_fast state UP qlen 1000
  link/ether 00:0c:29:dc:18:5f brd ff:ff:ff:ff:ff:ff
  inet 192.168.55.128/24 brd 192.168.55.255 scope global dynamic ens38
    valid_lft 1752sec preferred_lft 1752sec
  inet6 fe80::20c:29ff:fedc:185f/64 scope link 
    valid_lft forever preferred_lft forever
[root@host ~]$curl http://192.168.55.128    # 访问


  CentOS 7.3

[root@host conf.d]$mkdir -pv /web/vhosts/www1
[root@host conf.d]$mkdir -pv /web/vhosts/www2
[root@host conf.d]$mkdir -pv /var/log/httpd/www2
[root@host conf.d]$mkdir -pv /var/log/httpd/www1

# path /etc/httpd/conf.d/vir.conf   # 配置文件全路径
#virtual host 1  　　# 虚拟主机1的配置

  ErrorLog "/var/log/httpd/www1/error_log"
  CustomLog "/var/log/httpd/www1/access_log" combined
  
    SetHandler server-status
  
  
    
    Require all granted
    Require not ip 192.168.1
    
  

# virtual host 2   # 虚拟主机2的配置

  ServerName www2.stuX.com
  DocumentRoot "/web/vhosts/www2"
  ErrorLog "/var/log/httpd/www2/error_log"
  CustomLog "/var/log/httpd/www2/access_log" combined
  
    
    　　Require all granted
    
  

[root@host conf.d]$cat /web/vhosts/www1/index.html
welcome to www1
thank you
[root@host conf.d]$cat /web/vhosts/www2/index.html 
welcome to www2
thank you

[root@host conf.d]$httpd -t
Syntax OK
[root@host conf.d]$systemctl reload httpd.service