$ sudo apache2ctl configtest
#回显
$ H00558: apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.1.1. Set the 'ServerName' directive globally to suppress this message
Syntax OK
4.2 Apache2 配置
事实上现在访问本地 http//127.0.0.1 就已经可以访问到信息,证明 Apache服务项已经在跑起来了