centos7中启动Nginx： /usr/local/nginx/sbin/nginx，提示以下内容
[root@xyw-cyck-cms-3 ~]# /usr/local/nginx/sbin/nginx nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use) nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use) nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use) nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use) nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use) nginx: [emerg] still could not bind()
解决办法：
根据Nginx配置文件查看配置的端口（本文中使用的是80端口），然后根据端口查看端口占用情况
[root@xyw-cyck-cms-3 ~]# netstat -ntlp|grep 80 tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 7043/nginx: worker
使用kill命令杀死占用进程，之后重新启动Nginx
kill -9 7043
