httpd: Could not reliably determine the server's fully qualified domain name, using 10.171.234.48 for ServerName
(98)Address already in use: make_sock: could not bind to address 0.0.0.0:80
no listening sockets available, shutting down
Unable to open logs
conf/httpd.conf
怎么改端口都是这个错误啊！感觉端口更改后不生效，另外Linux上有nginx已经占用了80端口。

改apache的监听端口后还是报错吗

你在没启动apache之前，
curl -I localhost
看看是哪个服务器用了该端口。
若nginx一定要开的话，
你就改apache的端回为8080或其他。
不然就把nginx停掉。