第一、启动、终止、重启
systemctl start httpd.service #启动
systemctl stop httpd.service #停止
systemctl restart httpd.service #重启
第二、设置开机启动/关闭
systemctl enable httpd.service #开机启动
systemctl disable httpd.service #开机不启动
第三、检查httpd状态
systemctl status httpd.service