一，测试apache服务
[root@200 Desktop]# systemctl status firewalld >>>>>>开启防火墙
firewalld.service - firewalld - dynamic firewall daemon
Loaded: loaded (/usr/lib/systemd/system/firewalld.service; enabled)
Active: active (running) since Sat 2018-06-09 08:52:16 EDT; 4min 36s ago
Main PID: 476 (firewalld)
CGroup: /system.slice/firewalld.service
└─476 /usr/bin/python -Es /usr/sbin/firewalld --nofork --nopid...
Jun 09 08:52:16 localhost systemd[1]: Started firewalld - dynamic firewa....
Hint: Some lines were ellipsized, use -l to show in full.
[root@200 Desktop]# systemctl status iptables >>>>>>>关闭iptables
iptables.service - IPv4 firewall with iptables
Loaded: loaded (/usr/lib/systemd/system/iptables.service; disabled)
Active: inactive (dead)
[root@200 Desktop]# yum install httpd -y >>>>>>安装httpd服务
[root@200 Desktop]# systemctl st
