appach启动错误

问题：

AH00558: httpd: Could not reliably determine the server's fully qualified domain name, using centos7.localdomain. Set the 'ServerName' directive globally to suppress this message
(98)Address already in use: AH00072: make_sock: could not bind to address [::]:80
(98)Address already in use: AH00072: make_sock: could not bind to address 0.0.0.0:80

解决：

　　a,将 apache 的配置文件httpd.conf中的 ServerName 改成可用域名或如下配置

　　b,netstat -lnp | grep 80查看端口占用情况

　　　　如果端口被占用，kill 1194

　　c,重新启动Apache